Endgame position: progress in eval?

ernest · Post by **ernest** » Tue Sep 11, 2012 7:09 pm

peter wrote:I think this could be of interest...

Hi Peter,

A few remarks.
1. Interesting, that the Rybka Cluster 64 cores has no clue, even after 30 min. (eval stuck at 4.67-4.70: at this climbing rate, how long will it take to show a win?...)
2. I studied Robert Houdart's try with Houdini 3
[d]7n/6k1/5pp1/2Q2n1p/7P/5PP1/6K1/8 b - - 0 1
He obtained

Code: Select all

44/99  344:59 +6.36    1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 
                       5.h5 Ne5 6.Qe7+ Nef7 7.Qd7 Kf8 8.Qe6 Ng8 
                       9.Qc8+ Kg7 10.Qd7 Kf8 11.Kg3 Ngh6 
                       12.Qe6 Kg7 13.Kg2 Kf8 14.Kf2 Kg7 (162.934.850.135)

First, notice 11.Kg3 13.Kg2 14.Kf2
This random shuffling shows well enough what you said: engine's horizon is reached.
Then I analysed the last position of the PV, 14...Kg7 with my Houdini 2.0c w32 Nlm(5-men), dual-core, and obtained

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......
15.Kg2 Ne5 16.Qe7+ Nef7 17.Kf3 f5 18.gxf5 Nxf5 19.Qa3 Kf6 20.Ke4 N5h6 21.Qa6+ Ke7 22.Kd5 g4 23.Qe6+ Kf8 24.Qf6 Ke8 25.Qb2 Kf8 26.Qb4+ Kg7 27.Qd4+ Kg8 28.Ke6 Kf8 29.Kf6 Ng8+ 30.Kf5 Ke7 31.Qe3+ Kf8 32.Qc5+ Kg7 33.Ke6 Nd8+ 34.Kd7 Nf7 35.Qd4+ Kf8 36.Qb4+ Kg7 37.Qxg4+ Kf8 38.Qf3 Kg7 39.Qg3+ Kf8 40.Ke6 Ngh6 41.Qd3 Ng4 42.Qf3 Ngh6 43.Kf6 Ng8+ 44.Kg6 Ne7+ 45.Kh7 Ke8 46.Qg3 Nf5 47.Qe1+ Kf8 48.Qa5 N7h6 49.Kg6 Ke7 50.Qe5+ Kd7 51.Qd5+ Ke7 52.Qe4+ Kd6 53.Kf6 Ne3 54.Qd3+ Kc6 55.Qc3+ Kd5 56.Qe5+ Kc6 57.Qe4+ Kd6 58.Qd3+ 
  +-  (5.79)   Depth: 42/98   13:55:32  172019mN, tb=335398
15.Kg2 Ne5 16.Qe7+ Nef7 17.Kf3 f5 18.gxf5 Nxf5 19.Qa3 Kf6 20.Ke4 N5h6 21.Qa6+ Ke7 22.Kd5 g4 23.Qe6+ Kf8 24.Qf6 Ke8 25.Qb2 Kf8 26.Qb4+ Kg7 27.Qd4+ Kg8 28.Ke6 Kf8 29.Kf6 Ng8+ 30.Kf5 Ke7 31.Qe3+ Kf8 32.Qc5+ Kg7 33.Ke6 Nd8+ 34.Kd7 Nf7 35.Qd4+ Kf8 36.Qb4+ Kg7 37.Qxg4+ Kf8 38.Qf3 Kg7 39.Qg3+ Kf8 40.Ke6 Ngh6 41.Qd3 Ng4 42.Qf3 Ngh6 43.Kf6 Ng8+ 44.Kg6 Ne7+ 45.Kh7 Ke8 46.Qg3 Nf5 47.Qe1+ Kf8 48.Qa5 N7h6 49.Kg6 Ke7 50.Qe5+ Kd7 51.Qd5+ Ke7 52.Qe4+ Kd6 53.Kf6 Ne3 54.Qd3+ Kc6 55.Qc3+ Kd5 56.Qe5+ Kc6 57.Qe4+ Kd6 58.Qd3+ 
  +-  (5.79)   Depth: 43/98   20:38:19  252803mN, tb=461726

Now let's see if I can backtrack (backward solving, as you call it) that wonderful

(5.79) eval
Indeed, I can easily reach

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5.h5 Ng8 6.Qa7 Kf8 7.Qa8+ Kg7 8.Qb7 Kf8 9.Qb8+ Kg7 10.Qc7 Kf8 11.Qc8+ Kg7 12.Qd7 Kf8 13.Kg3 Kg7 14.Kf2 Kf8 15.Ke3 Ne5 16.Qe6 Kg7 17.Ke4 Kh7 
  +-  (5.79)   Depth: 41/88   00:30:21  6406mN, tb=38553

and

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3...Ne5 4.gxh5 gxh5 5.f4 Ng6 6.Kg3 f5 7.Qc7+ Kh8 8.Qd8+ Kg7 9.Qg5 Kh7 10.Qxh5 Nh8 11.Qe2 N8f7 12.Qe7 Kg6 13.Qe6+ Kg7 14.h5 Kg8 15.Kf3 Kf8 16.Ke2 Kg8 17.Kd3 Kg7 18.Kd4 Kf8 19.Kc5 Kg8 20.Kd5 Kf8 21.Qd7 Kg8 22.Ke6 Kg7 23.Qd4+ Kf8 24.Qc5+ Kg7 25.Qg1+ Kf8 26.Kf6 Ke8 27.Qa7 
  +-  (5.79)   Depth: 31/55   00:01:54  442mN, tb=647
3...Ne5 4.gxh5 
  +-  (6.03 --)   Depth: 32/65   00:02:46  641mN, tb=1094
3...hxg4+ 4.fxg4 g5 5.h5 
  +-  (5.79)   Depth: 32/65   00:06:28  1465mN, tb=2833
3...hxg4+ 4.fxg4 g5 5.h5 
  +-  (5.79)   Depth: 33/65   00:06:28  1466mN, tb=2833
3...hxg4+ 4.fxg4 g5 5.h5 
  +-  (5.79)   Depth: 34/65   00:06:49  1543mN, tb=3142

but then 2...Ne5 is preferred

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2...N5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Qb4 Kg8 6.Qd4 f5 7.gxf5 Nxf5 8.Qf6 N5h6 9.Qxg6+ Kf8 10.h5 Ng8 11.Qg4 Ngh6 12.Qh4 Kg7 13.Qd4+ Kf8 14.Qc5+ Kg7 15.Qc3+ Kg8 16.Qf6 Kf8 17.Qf4 Kg7 18.Kg3 Kh7 19.Qe4+ Kg7 20.Qg6+ Kf8 21.Kf4 Ng8 22.Qe4 Ngh6 23.Qa8+ Ke7 24.Qc8 Nd6 25.Qc5 Ke6 26.Qe5+ Kd7 27.Qg7+ Ndf7 28.Qf6 Ke8 29.Qg7 Ke7 30.Qh7 Kf8 31.Qd3 Kg7 32.Qg3+ Kf6 33.Qc3+ Ke7 34.Qe1+ Kf6 35.Qg3 Ke7 36.Qa3+ 
  +-  (5.79)   Depth: 29/69   00:07:30  1656mN, tb=859
2...N5d6 3.g4 
  +-  (6.03 --)   Depth: 30/69   00:13:43  3042mN, tb=2086
2...Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 
  +-  (5.79)   Depth: 30/69   00:15:55  3530mN, tb=2461
2...Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 7.h5 
  +-  (5.79)   Depth: 31/69   00:18:45  4163mN, tb=2955
2...Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 7.h5 
  +-  (5.79)   Depth: 32/69   00:24:33  5487mN, tb=4413

and 2.Kh3 cannot maintain the (5.79) eval (or perhaps needs a looong time...) and sinks to (4.83)

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2.Kh3 Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 7.h5 
  +-  (5.79)   Depth: 31/74   00:00:05  19355kN, tb=258
2.Kh3 Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 7.h5 
  +-  (5.79)   Depth: 32/74   00:00:08  31114kN, tb=451
2.Kh3 Ne5 3.Qa7+ Nf7 4.g4 hxg4+ 5.fxg4 N5h6 6.Qc5 g5 
  +-  (5.79)   Depth: 33/74   00:00:17  68224kN, tb=866
2.Kh3 Ne5 
  +-  (5.55 --)   Depth: 34/74   00:01:00  244mN, tb=2018
2.Kh3 Ne5 3.g4 Nh6 4.gxh5 
  +-  (5.79)   Depth: 34/74   00:06:31  1519mN, tb=5206
2.Kh3 N5h6 3.g4 hxg4+ 
  +-  (5.79)   Depth: 35/78   00:15:03  3444mN, tb=9245
2.Kh3 N5h6 3.g4 hxg4+ 
  +-  (5.79)   Depth: 36/78   00:16:13  3703mN, tb=11222
2.Kh3 N5h6 3.g4 hxg4+ 
  +-  (5.79)   Depth: 37/78   00:19:45  4505mN, tb=14756
2.Kh3 N5h6 
  +-  (5.55 --)   Depth: 38/78   00:21:00  4790mN, tb=17476
2.Kh3 N5h6 
  +-  (5.07 --)   Depth: 38/78   00:25:52  5921mN, tb=26143
2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qc8+ Kg7 8.Qb7 Kf8 9.Qa8+ Kg7 10.Kg3 Ne5 11.Qa7+ Kh8 12.Qb8 Kg7 13.Qc7+ Kh8 14.Qc8 Kg7 15.Qb7+ Kf8 16.Qb6 Kg7 17.Qd8 Kh8 18.Kh3 Kg7 19.Qc7+ Kf8 20.Qh7 Nf7 21.Qc2 Ngh6 22.Qc5+ Ke8 23.Qc8+ Ke7 24.Qb7+ Kf8 25.Qb8+ Kg7 26.Qe8 Ng8 27.Qe3 Ne5 28.Qa7+ Kh8 29.Qa8 Kg7 30.Qa3 Kh8 31.Kg3 
  +-  (4.83)   Depth: 38/78   00:40:27  9408mN, tb=39745
2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qc8+ Kg7 8.Qb7 Kf8 9.Qa8+ Kg7 10.Kg3 Ne5 11.Qa7+ Kh8 12.Qb8 Kg7 13.Qc7+ Kh8 14.Qc8 Kg7 15.Qb7+ Kf8 16.Qb6 Kg7 17.Qd8 Kh8 18.Kh3 Kg7 19.Qc7+ Kf8 20.Qh7 Nf7 21.Qc2 Ngh6 22.Qc5+ Ke8 23.Qc8+ Ke7 24.Qb7+ Kf8 25.Qb8+ Kg7 26.Qe8 Ng8 27.Qe3 Ne5 28.Qa7+ Kh8 29.Qa8 Kg7 30.Qa3 Kh8 31.Kg3 
  +-  (4.83)   Depth: 39/78   00:46:05  10778mN, tb=43933

and finally 1...Nf7 only gets that (4.83) eval, again unless perhaps a looong analysis time can show the contrary.

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1...Nh6 2.Qc7+ N8f7 3.Qd7 Kf8 4.Kh3 Ng8 5.g4 hxg4+ 6.fxg4 g5 7.Qc8+ Kg7 8.h5 Ne5 9.Qc7+ Kf8 10.Qc5+ Kg7 11.Kg3 Kh8 12.Qf8 Nd7 13.Qa3 Ne5 14.Qd6 Kg7 15.Qc5 Kh8 
  +-  (4.83)   Depth: 31/59   00:00:23  89981kN, tb=36
1...Nh6 2.Qc7+ N8f7 3.Qd7 Kf8 4.Kh3 Ng8 5.g4 hxg4+ 6.fxg4 g5 7.Qc8+ Kg7 8.h5 Ne5 9.Qc7+ Kh8 10.Kg3 Nh6 11.Qd8+ Ng8 12.Kh3 Kg7 13.Qc7+ Kh8 
  +-  (4.83)   Depth: 32/59   00:00:31  117mN, tb=61
1...Nh6 2.Qc7+ N8f7 3.Qd7 Kf8 4.Kh3 Ng8 5.g4 hxg4+ 6.fxg4 g5 7.Qc8+ Kg7 8.h5 Ne5 9.Qc7+ Kh8 10.Kg3 Nh6 11.Qd8+ Ng8 12.Kh3 Kg7 13.Qc7+ Kh8 
  +-  (4.83)   Depth: 33/59   00:00:40  152mN, tb=92
1...Nh6 2.Qc7+ N8f7 3.Qd7 Kf8 4.Kh3 Ng8 5.g4 hxg4+ 6.fxg4 g5 7.Qc8+ Kg7 8.h5 Ne5 9.Qc7+ Kh8 10.Kg3 Nh6 11.Qd8+ Ng8 12.Kh3 Kg7 13.Qe8 Kh8 14.Kg3 Kg7 15.Qd8 Kh8 16.Kh3 
  +-  (4.83)   Depth: 34/59   00:01:01  236mN, tb=342
1...Nh6 2.Qb4 N8f7 3.g4 hxg4 4.fxg4 Ng8 5.Qb7 Kf8 6.Qb8+ Kg7 7.Qa7 Ngh6 8.Qd7 Kf8 9.Qc8+ Kg7 10.Qe6 Nd8 11.Qd7+ Ndf7 12.Kg3 g5 13.h5 Kf8 14.Qe6 Kg7 15.Kg2 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
  +-  (4.84)   Depth: 35/59   00:03:00  700mN, tb=1245
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 35/60   00:04:42  1092mN, tb=1449
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 36/84   00:04:44  1097mN, tb=1461
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 37/84   00:05:23  1246mN, tb=1591
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 38/84   00:06:30  1502mN, tb=1876
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 39/84   00:08:30  1959mN, tb=2374
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 39/84   00:08:30  1959mN, tb=2374
1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Ng8 6.Qc7 Kf8 7.Qb8+ Kg7 8.Qa7 Kf8 9.Kg3 Ne5 10.Qh7 Nf7 11.Kg2 Ngh6 12.Kf3 Ke7 13.Qg7 Ke6 14.Kg3 Ke7 15.Kh3 Ke6 16.Qf8 f5 17.Qe8+ Kf6 18.Qc6+ Ke5 19.gxf5 Nxf5 20.Qg6 N5h6 21.Kg3 Nf5+ 22.Kg4 N5h6+ 23.Kf3 Kd5 24.Qe4+ Kd6 25.Kg3 Kd7 26.Kh3 Kd6 27.Kg2 Kd7 28.Qg6 Ke7 29.Kg3 Kf8 30.Qe6 Kg7 31.Kf3 Kf8 32.Qe4 Ng8 33.Qd4 Ngh6 34.Qb4+ Kg7 35.Qc3+ Kg8 36.Qf6 Kf8 37.Qe6 Ng8 38.Kg3 Ngh6 39.Kh3 Kg7 40.Qb6 Ng8 41.Qg6+ Kf8 42.Kg3 Ngh6 43.Qe6 
  +-  (4.83)   Depth: 40/84   00:11:01  2541mN, tb=3787

So it really seems that Houdini has a difficulty with that endgame position.
Apparently Stockfish (and Stockfish variants) do better there.

peter · Post by **peter** » Tue Sep 11, 2012 10:07 pm

ernest wrote:Apparently Stockfish (and Stockfish variants) do better there.

As for this position I'd say so too, Ernest, and here comes my point: you cannot proof this easily by letting two or more engines play big amounts of games against each others from this position, cause most of nowadays engines of interest will win big amounts of games with White and lose with Black.
You can proof it much more easily by comparing the output and evals over time and variants in forward and backward analysis, it's simply the more selective and significant way of testing engines' strength as for certain positions of interest.
Did I mention lately, that playing strength is always relative to certain positions and there isn't anything like "overall playing strength" in reality at all? It's an illusion, measured in Elo in ancient times, let's call it the ancient Elosion

Houdini · Post by **Houdini** » Wed Sep 12, 2012 1:16 am

ernest wrote:2. I studied Robert Houdart's try with Houdini 3
[d]7n/6k1/5pp1/2Q2n1p/7P/5PP1/6K1/8 b - - 0 1
He obtained
Code: Select all
44/99  344:59 +6.36    1...Nf7 2.Kh3 N5h6 3.g4 hxg4+ 4.fxg4 g5 
                       5.h5 Ne5 6.Qe7+ Nef7 7.Qd7 Kf8 8.Qe6 Ng8 
                       9.Qc8+ Kg7 10.Qd7 Kf8 11.Kg3 Ngh6 
                       12.Qe6 Kg7 13.Kg2 Kf8 14.Kf2 Kg7 (162.934.850.135) 
First, notice 11.Kg3 13.Kg2 14.Kf2
This random shuffling shows well enough what you said: engine's horizon is reached.
Then I analysed the last position of the PV, 14...Kg7 with my Houdini 2.0c w32 Nlm(5-men), dual-core, and obtained

Here's the analysis with Houdini 3 in the position after 14...Kg7:

Code: Select all

8/5nk1/4Qp1n/6pP/6P1/8/5K2/8 w - -

Engine: Houdini 3 (4096 MB)
by Robert Houdart

31/64  0:28   +4.69    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qc7 Kf6 20.Qb6+ Ke5 
                       21.Qb8+ Ke6 22.Qb6+ Ke5 23.Qb8+ (226.521.325) 8017 

32/64  0:35   +4.88++  15.Kg3 (284.131.721) 8034 

32/64  1:06   +5.24    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qc7 Kf6 20.Qb6+ Ke5 
                       21.Qa6 N5h6 22.Qe2+ Kf5 23.Qe7 Ne5+ 
                       24.Kg2 Nef7 25.Kg3 g4 26.Qe3 Kf6 
                       27.Kf4 Kg7 28.Qc3+ (565.860.647) 8540 

33/72  1:29   +5.46++  15.Kg3 (759.281.329) 8449 

33/72  2:06   +5.89++  15.Kg3 (1.037.948.444) 8233 

33/77  3:24   +7.07    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qa7 Kf6 20.Qa2 N7h6 
                       21.Qb2+ Ke6 22.Qb3+ Ke5 23.Qb8+ Ke6 
                       24.Qe8+ Ne7 25.Qd8 g4+ 26.Ke4 Neg8 
                       27.Qd5+ Ke7 28.Kf4 (1.654.401.737) 8073 

34/77  3:59   +7.06    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qa7 Kf6 20.Qa2 N7h6 
                       21.Qb2+ Ke6 22.Qb3+ Ke5 23.Qb8+ Ke6 
                       24.Qe8+ Ne7 25.Qd8 g4+ 26.Ke4 Neg8 
                       27.Qd5+ Kf6 28.Qd6+ (1.936.922.473) 8082 

35/82  5:40   +7.03    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qa7 Kf6 20.Qa2 N7h6 
                       21.Qb2+ Ke6 22.Qb3+ Ke5 23.Qb8+ Ke6 
                       24.Qe8+ Ne7 25.Qd8 g4+ 26.Ke4 Neg8 
                       27.Qd5+ Ke7 28.Kf4 (2.750.319.598) 8078 

36/82  9:13   +6.95    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qa7 Kf6 20.Qa2 N7h6 
                       21.Qb2+ Ke6 22.Qb3+ Ke5 23.Qb8+ Ke6 
                       24.Qe8+ Kf6 25.Qg6+ Ke5 26.Qxg5 Nf7 
                       27.Qg8 N5h6 28.Qe8+ (4.513.036.658) 8149 

37/82  14:28  +7.11    15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 f5 
                       18.gxf5 Nxf5 19.Qa7 Kf6 20.Qa2 N7h6 
                       21.Qb2+ Ke6 22.Qb3+ Ke5 23.Qb8+ Ke6 
                       24.Qe8+ Kf6 25.Qd8+ Ke5 26.Qxg5 Nf7 
                       27.Qg8 N5h6 28.Qg6 (7.081.601.469) 8156 

38/82  18:36  +7.40++  15.Kg3 (9.072.350.136) 8125 

38/89  20:56  +7.99++  15.Kg3 (10.168.678.048) 8093 

38/90  26:06  +9.63++  15.Kg3 (12.605.193.910) 8048 

38/94  40:04  +14.43   15.Kg3 Ne5 16.Qe7+ Nef7 17.Kf3 Ng8 
                       18.Qb7 Kf8 19.Qc8+ Kg7 20.Qd7 Kf8 
                       21.Ke4 Ne5 22.Qd8+ Kf7 23.Qc7+ Ke6 
                       24.Qb6+ Kf7 25.Qb7+ Kf8 26.Kf5 Nf7 
                       27.Qd7 Ne5 28.Qc7 (19.565.940.322) 8138

Score +14.43, winning!
Combined with the analysis I published above, it appears that Houdini 3 correctly solves the starting position as a win. As you've noted there may be some redundant moves or "random shuffling" in the main line, but the winning plan and the outcome are very clear.
All the previous Houdini 3 analyses are obtained without any tablebases, using 3 cores of a Core i5-750 and 4096 MB of hash.

Robert

peter · Post by **peter** » Wed Sep 12, 2012 7:12 am

Hi Robert!

Houdini wrote:All the previous Houdini 3 analyses are obtained without any tablebases, using 3 cores of a Core i5-750 and 4096 MB of hash.

Houdini does a very good job in this position, as a matter of fact the initial eval over +4 is a winning score already and the climbing of eval computing the starting position is clearly to be seen over the time with and without tbs, yet it takes its time.
Taking the DTM-eval from the won 6mob backward in hash works still faster and better than with all other engines I tried, only Zappa with Nalimov's and Stockfish with and without Gaviota's are doing as well.
It's a matter of taste, what you think most important of an engine's output in such positions: the right clue in short times from starting position or the soonest not to be doubted eval, the distance to mate from earliest point in variants to be taken back to starting position most quickly and ecactly, in this respect Houdini is The Great Houdini one more time.

By the way, what would be your best special parameters in that position as for hard probe and soft probe depth of Houdini's Nalimov's usage with 6mob?

Stockfish once again is still faster in this endgame position as for climbing of evals computing the starting position and going into the variants and keeping them in hash way backward, but still misses Nalimov's support, Gaviaota's are 5mob only, as far as I know.

Here is Stocki again without Gaviota's, it's clearly better then in my trial of Stockfish Ofry, but the position fits its search especially well obviously because there isn't any Zugzwang to be counted as it seems.

Code: Select all

81: Haupt - Bauer, Forum
7n/6k1/5pp1/2Q2n1p/7P/5PP1/6K1/8 b - - 0 1

Analysis by Stockfish 2.2.2 JA SSE42:

1...Sf7 2.Dc3 Se5 3.Dc7+ Sf7 4.Dd7 Se3+ 5.Kf2 Sf5 
  +-  (4.76 ++)   Tiefe: 7/13   00:00:03  4kN
1...Sf7 2.f4 S7d6 3.Kf3 Sb5 4.Db6 Sbd4+ 5.Ke4 
  +-  (4.76)   Tiefe: 7/13   00:00:03  5kN
1...Sf7 2.Dc7 Se3+ 3.Kf2 Sf5 4.Dd7 
  +-  (4.84 --)   Tiefe: 8/15   00:00:03  12kN
1...Sf7 2.Dc7 Se3+ 3.Kf2 Sf5 4.Dd7 
  +-  (4.92 --)   Tiefe: 8/15   00:00:03  12kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.01)   Tiefe: 8/15   00:00:03  18kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.01)   Tiefe: 9/15   00:00:03  24kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.01)   Tiefe: 10/15   00:00:03  26kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.01)   Tiefe: 11/16   00:00:03  36kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.01)   Tiefe: 12/16   00:00:03  42kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.Kf2 Kf8 5.f4 S7d6 6.Kf3 Sd4+ 7.Ke3 S6f5+ 8.Ke4 
  +-  (5.09 --)   Tiefe: 13/16   00:00:03  58kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Se5 4.Dh7 Se3+ 5.Kh3 Sf5 6.f4 
  +-  (5.17 --)   Tiefe: 13/19   00:00:03  86kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.f4 S5d6 5.Kf3 Sc4 6.Kf2 Scd6 7.Kf3 
  +-  (5.09)   Tiefe: 13/20   00:00:03  130kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.f4 S5d6 5.Kf3 Sf5 6.Kf2 Kg8 7.Kf3 Kg7 
  +-  (5.09)   Tiefe: 14/20   00:00:03  158kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.f4 S5d6 5.Kf3 Sf5 6.Kf2 Kg8 7.Kf3 Kg7 
  +-  (5.09)   Tiefe: 15/20   00:00:03  160kN
1...Sf7 2.Dc7 Kf8 3.Dd7 Kg7 4.f4 S5d6 5.Kf3 Sf5 6.Kf2 Kg8 7.Kf3 Kg7 
  +-  (5.09)   Tiefe: 16/20   00:00:03  180kN
1...Sf7 2.Kh3 S7d6 3.g4 
  +-  (5.17 --)   Tiefe: 17/23   00:00:03  281kN
1...Sf7 2.Kh3 S7d6 3.g4 
  +-  (5.25 --)   Tiefe: 17/24   00:00:03  309kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.De7 Sf2+ 6.Kg3 Sd3 7.h5 
  +-  (5.37 --)   Tiefe: 17/24   00:00:03  376kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.De7 Sf2+ 6.Kg3 Sd3 7.h5 
  +-  (5.55 --)   Tiefe: 17/30   00:00:03  680kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.Dc4 Sed6 6.Dd5 Se8 7.De6 Sc7 8.Dd7 Sa6 9.De7 
  +-  (5.82 --)   Tiefe: 17/32   00:00:03  1373kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Dd4 Ke7 6.De3+ Kd7 7.h5 g5 8.Dd4 Ke6 9.Dc3 Sh6 10.De3+ Kf7 11.Da7+ Ke6 12.Dg7 Sdf7 13.Kg3 
  +-  (6.02)   Tiefe: 17/32   00:00:04  1898kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Dd4 Ke7 6.De3+ Kd7 7.h5 g5 8.Dd4 Ke6 9.Dc3 Sh6 10.De3+ Kf7 11.Da7+ Ke6 12.Dg7 Sdf7 13.Kg3 
  +-  (6.02)   Tiefe: 18/32   00:00:04  2047kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Kg8 8.Df6 Sf3 9.Dxg6+ Kf8 10.Kg3 S3xg5 11.Kf4 Ke7 12.Kf5 Kd7 
  +-  (5.93 ++)   Tiefe: 19/32   00:00:04  2512kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Kg8 8.Kg3 Kg7 9.Df6+ Kg8 10.Kh4 
  +-  (6.10 --)   Tiefe: 19/32   00:00:04  2778kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 f5 5.Dc3+ Kh7 6.Df6 fxg4+ 7.Kxg4 Sh6+ 8.Kf4 Shf5 9.Df8 
  +-  (6.22 --)   Tiefe: 19/37   00:00:04  3481kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 f5 5.Dc3+ Kf8 6.Dd4 fxg4+ 7.Kxg4 Ke7 8.Kf4 Sf5 9.Dc5+ Kf6 10.Dc3+ Ke6 11.Db3+ Kf6 12.Db2+ Ke6 13.Da2+ Kf6 14.Da1+ Ke6 15.Da2+ 
  +-  (6.02)   Tiefe: 19/38   00:00:04  4490kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 f5 5.Dc3+ Kf8 6.Df6 Se4 7.Dxg6 fxg4+ 8.Kg2 Sed6 9.Dxg4 Ke7 10.h5 
  +-  (6.10 --)   Tiefe: 20/43   00:00:04  6353kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 f5 5.Dc3+ Kf8 6.Df6 Se4 7.Dxg6 fxg4+ 8.Kg2 Sed6 9.De6 g3 10.Kxg3 Kg7 11.h5 
  +-  (6.18 --)   Tiefe: 20/43   00:00:04  6619kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.Dc4 Sed6 6.Dd4 Sb5 7.Dc5 Sbd6 8.Dd5 Kf8 9.De6 Kg7 10.Kg3 Kg8 11.h5 Kh7 12.Kf4 Kg7 13.h6+ Kh7 14.Dxf6 Kxh6 15.g5+ Kh5 16.De6 
  +-  (6.06)   Tiefe: 20/43   00:00:04  7719kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.Dc4 Sed6 6.Dd4 Sb5 7.Dc5 Sbd6 8.Dd5 Kf8 9.De6 Kg7 10.Kg3 Kg8 11.h5 Kh7 12.Kf4 Kg7 13.hxg6 Kxg6 14.g5 
  +-  (6.14 --)   Tiefe: 21/43   00:00:04  7899kN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Se4 5.Dc4 Sed6 6.Dd4 Sb5 7.Dc5 Sbd6 8.Dd5 Kf8 9.De6 Kg7 10.Kg3 Kg8 11.h5 Kh7 12.Kf4 Kg7 13.De7 gxh5 14.gxh5 Kh6 15.Dxf6+ Kxh5 16.Dd4 
  +-  (6.22 --)   Tiefe: 21/43   00:00:04  8071kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sf3 8.Df6+ Kg8 9.Dxg6+ Kf8 10.Df6 S3xg5+ 11.Kg4 Se4 12.De6 Sed6 13.Kf4 Se8 14.Db6 Sed6 15.Dd4 Sb5 16.Dd7 Sbd6 17.De6 
  +-  (6.18)   Tiefe: 21/43   00:00:04  9035kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sf3 8.Df6+ Kg8 9.Dxg6+ Kf8 10.Df6 S3xg5+ 11.Kg4 Se4 12.De6 Sed6 13.Kf4 Se8 14.Db6 Sed6 15.Db4 Kg7 16.Db2+ Kg6 17.Dc2+ Kh6 18.Dc3 
  +-  (6.26 --)   Tiefe: 22/43   00:00:04  9934kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 f5 7.Df6+ Kf8 8.h5 gxh5 9.g6 
  +-  (6.34 --)   Tiefe: 22/43   00:00:04  10433kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sd3 8.Df6+ Kf8 9.Kg3 Sde5 10.Kh4 Ke8 11.Kg3 Kf8 
  +-  (6.10 ++)   Tiefe: 22/43   00:00:05  10557kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sd3 8.Df6+ Kf8 9.Kg3 Sde5 10.Kh4 Ke8 11.Kg3 Kf8 
  +-  (5.91 ++)   Tiefe: 22/43   00:00:05  10592kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sd3 8.Kg3 Sde5 9.Kf4 Sd3+ 10.Ke4 Sde5 11.Df6+ Kf8 12.Kd5 Sd3 13.Db6 Kg7 14.Db3 Sf4+ 15.Ke4 Sh5 16.Dc3+ Kf8 
  +-  (6.02)   Tiefe: 22/43   00:00:05  10723kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.De7+ Shf7 6.g5 fxg5 7.hxg5 Sd3 8.Kg3 Sde5 9.Kf4 Sd3+ 10.Ke4 Sde5 11.Df6+ Kf8 12.Kd5 Sd3 13.Kd4 Sde5 14.Ke4 Kg8 15.Kd5 Kf8 16.Ke6 
  +-  (6.10 --)   Tiefe: 23/43   00:00:05  11199kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 f5 5.Dc3+ Kh7 6.gxf5 Sxf5 7.Kg4 S7h6+ 8.Kg5 Sf7+ 9.Kf6 S7d6 10.Dc7+ Kh6 11.Ke5 Se8 12.Df7 
  +-  (6.18 --)   Tiefe: 23/43   00:00:05  11555kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.g5 Shf7 6.gxf6+ Kxf6 7.Db6+ Kg7 8.Kg3 g5 9.h5 Sh6 10.De6 Shf7 11.h6+ Kh7 
  +-  (5.93 ++)   Tiefe: 23/43   00:00:05  11878kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 Se5 5.g5 Shf7 6.De7 fxg5 7.hxg5 Sd3 8.Kg3 Sde5 9.Kf4 Sd3+ 10.Ke4 Sde5 11.Df6+ Kf8 12.Kd4 Ke8 13.Kd5 Sd3 14.Dc6+ Kf8 15.Kd4 Sf4 16.Ke4 
  +-  (6.30 --)   Tiefe: 23/43   00:00:05  12677kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kf8 14.Dc8+ Ke7 15.Dc5+ Kd7 16.Da7+ Ke6 17.Db6+ Ke7 18.Dc7+ Ke6 19.Dc4+ Ke7 20.Dc5+ 
  +-  (6.34)   Tiefe: 23/43   00:00:05  13460kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kf8 14.De6 Kg7 15.Kg2 Se5 16.De7+ Sef7 17.Kg3 f5 18.De6 fxg4 19.Dg6+ Kf8 20.Db6 Kg8 21.Df6 Kf8 22.Df2 Kg7 23.Db2+ Kf8 
  +-  (6.34)   Tiefe: 24/43   00:00:05  14765kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De8+ Kg7 15.De6 
  +-  (6.34)   Tiefe: 25/43   00:00:05  15918kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dd7 Kg8 16.De6 Kg7 17.Kg2 Se5 18.De7+ Sef7 19.Kh3 Sg8 20.Dc7 Sgh6 21.Kg3 
  +-  (6.30)   Tiefe: 26/46   00:00:05  18023kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dd7 Se5 16.Dc7 Sef7 17.Dc2 Se5 18.Dc7 
  +-  (6.30)   Tiefe: 27/46   00:00:06  20115kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dd7 Kg8 16.De6 Kg7 17.Kg2 Se5 18.De7+ Sef7 19.Kg3 f5 20.Dc5 fxg4 21.Dc3+ Kg8 22.Df6 Kf8 23.Df2 Kg7 24.Db2+ Kg8 25.Df6 
  +-  (6.30)   Tiefe: 28/46   00:00:06  22029kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dc8+ Kg7 16.Dd7 Kf8 17.De6 Kg7 18.Kg2 Se5 19.De7+ Sef7 20.Dd7 Kf8 21.De6 Kg7 22.Kg3 
  +-  (6.30)   Tiefe: 29/52   00:00:06  24848kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dc8+ Kg7 16.Dd7 Kf8 17.De6 Kg7 18.Dd7 
  +-  (6.30)   Tiefe: 30/52   00:00:06  27368kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc7 Kg8 14.Db7 Kf8 15.Dc8+ Kg7 16.Dd7 Kf8 17.De6 Kg7 18.Dd7 
  +-  (6.30)   Tiefe: 31/52   00:00:07  31334kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dc5 Se5 14.De7+ 
  +-  (6.30)   Tiefe: 32/52   00:00:07  36344kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Se5 16.De7+ Sef7 17.Kg3 f5 18.Dc5 fxg4 19.Dd4+ Kg8 20.Df6 Kf8 21.Db6 Kg8 22.Dg6+ Kf8 23.Df6 Kg8 24.Dg6+ 
  +-  (6.30)   Tiefe: 33/57   00:00:08  50067kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Se5 16.De7+ Sef7 17.Kg3 f5 18.Dc5 fxg4 19.Dd4+ Kg8 20.Df6 Kf8 21.Db6 Kg8 22.Dg6+ Kf8 23.Df6 Kg8 24.Dg6+ 
  +-  (6.30)   Tiefe: 34/57   00:00:08  52832kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Dc7 Kg8 24.Dc8+ Kg7 25.Dd7 
  +-  (6.30)   Tiefe: 35/57   00:00:09  63249kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Dc7 Kg8 24.Dc8+ Kg7 25.De6 
  +-  (6.30)   Tiefe: 36/57   00:00:10  78715kN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Dc7 Kg8 24.Dc8+ Kg7 25.De6 
  +-  (6.30)   Tiefe: 37/57   00:00:13  122mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Dc7 Kg8 24.Dc8+ Kg7 25.De6 
  +-  (6.30)   Tiefe: 38/57   00:00:13  124mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Dc7 Kg8 24.Dc8+ Kg7 25.De6 
  +-  (6.30)   Tiefe: 39/57   00:00:13  128mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Dd7 Kg8 14.De6 Kg7 15.Kg2 Sg8 16.Dd7 Kf8 17.Df5 Kg7 18.Dg6+ Kf8 19.Kg3 Se5 20.Dh7 Sf7 21.Dc2 Sgh6 22.Dc5+ Kg7 23.Da7 Kf8 24.Da8+ Kg7 25.Da7 
  +-  (6.30)   Tiefe: 40/57   00:00:16  160mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dd7 Sg8 8.Kg3 Sgh6 9.Kg2 Kh7 10.De6 Kg7 11.Kf2 Se5 12.De7+ Sef7 13.Kf3 f5 14.gxf5 Sxf5 15.Db4 Se5+ 16.Ke4 Sc6 17.Db2+ Sfd4 18.Db7+ Kf6 19.Dc7 
  +-  (6.38 --)   Tiefe: 41/63   00:00:23  277mN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Dd4 Ke7 6.h5 Sg5+ 7.Kg2 gxh5 8.gxh5 Sf5 9.Dc5+ Ke6 10.Dc8+ Ke5 11.Db8+ Kd5 12.Df8 Se3+ 13.Kf2 Sc4 14.h6 Se4+ 15.Kg1 
  +-  (6.46 --)   Tiefe: 41/63   00:00:27  330mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Kg3 Se5 7.Da7+ Sf7 8.Kf3 Sgh6 9.De7 f5 10.gxf5 Sxf5 11.Db4 Se5+ 12.Ke4 Sc6 13.Db2+ Sfd4 14.Db7+ Kf6 15.Dc7 
  +-  (6.58 --)   Tiefe: 41/63   00:00:33  420mN
1...Sf7 2.Kh3 S5d6 3.g4 Sb7 4.Dd4 Se5 5.g5 
  +-  (6.76 --)   Tiefe: 41/63   00:00:38  512mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kg8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Sg8 11.Dc8+ Kg7 12.Db7 Sgh6 13.Dd7 
  +-  (6.30)   Tiefe: 41/63   00:00:44  586mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kg8 8.Dc8+ Kg7 9.Dd7 Sg8 10.Kg3 Sgh6 11.De6 Sg8 12.Db6 Sgh6 13.Dc5 Sg8 14.Dc8 Sgh6 15.Dc5 
  +-  (6.38 --)   Tiefe: 42/63   00:00:45  606mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Sg8 10.Dc7 Sgh6 11.Dd7 
  +-  (6.46 --)   Tiefe: 42/63   00:00:46  612mN
1...Sf7 2.Kh3 Se5 3.g4 hxg4+ 4.fxg4 Sh6 5.De7+ Shf7 6.h5 gxh5 7.gxh5 f5 8.Kg3 Kh6 9.Kf4 Sd3+ 10.Kxf5 
  +-  (6.58 --)   Tiefe: 42/63   00:00:47  634mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dc8+ Kg7 7.Dd7 Kf8 8.De6 Sg8 9.Kg2 Se5 10.Kg3 Kg7 11.Kh3 Kf8 12.Kg2 Kg7 13.De8 Kh8 14.Kg3 Kg7 15.Dc8 Sh6 16.Dc7+ Kf8 17.Dd6+ Kf7 18.Dd5+ Ke7 19.Dd4 Sexg4 20.Dc5+ Ke8 21.Db5+ Kf8 22.Dc6 Kg8 23.Dc8+ Kf7 24.Dd7+ Kg8 25.Dc8+ 
  +-  (6.30)   Tiefe: 42/63   00:01:04  912mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dc8+ Kg7 7.Dd7 Kf8 8.De6 Kg7 9.De7 Sg8 10.Dd7 Kf8 11.Dc8+ Kg7 12.Kg3 Se5 13.Dc7+ Kh8 14.Db7 Sh6 15.De7 Sg8 16.Df8 Sd7 17.Da3 Se5 18.Dc5 Kg7 19.Db4 Kh8 20.Da3 Kg7 21.Dd6 Kh8 22.Dc7 Sh6 23.Dd8+ Sg8 24.Dc7 
  +-  (6.38 --)   Tiefe: 43/63   00:01:05  930mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dc8+ Kg7 7.Dd7 Kf8 8.De6 Kg7 9.De7 Sg8 10.Dd7 Kf8 11.Dc8+ Kg7 12.Kg3 Se5 13.Dc7+ Kh8 14.Db7 Sh6 15.De7 Sg8 16.Df8 Sd7 17.Da3 Se5 18.Dc5 Kg7 19.Db4 Kh8 20.Da3 Kg7 21.Dd6 Kh8 22.Dc7 Sh6 23.Dd8+ Sg8 24.Dc7 
  +-  (6.46 --)   Tiefe: 43/63   00:01:06  936mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Se5 6.De7+ Sef7 7.Dc7 Kf8 8.Dc6 Kg7 9.Dd7 Kf8 10.De6 Kg7 11.Kg3 Se5 12.De7+ Sef7 13.Kf3 f5 14.gxf5 Sxf5 15.De8 Sd4+ 16.Kg2 Sf5 17.De6 S5h6 18.Dg6+ Kf8 19.Kg3 Sg8 20.De6 Kg7 21.Kg4 Sgh6+ 22.Kf3 Kf8 23.Ke4 Kg7 24.Dg6+ Kf8 25.De6 
  +-  (6.58 --)   Tiefe: 43/63   00:01:07  948mN
1...Sf7 2.Kh3 Se5 3.g4 hxg4+ 4.fxg4 Sh6 5.De7+ Sef7 6.g5 fxg5 7.hxg5 Sg8 8.Dd7 Kf8 9.Dc8+ Kg7 10.Dc7 Kf8 11.Kg3 Se7 12.Db8+ Kg7 13.Db7 Sf5+ 14.Kg4 Se3+ 15.Kf4 Sc4 16.Da7 Kg8 17.Da4 Sce5 18.Da6 Kg7 19.Df6+ Kg8 20.Ke4 Kf8 21.Kd4 Ke8 22.Kd5 Sd3 23.De6+ Kf8 24.Dc8+ Kg7 25.Dc3+ Sde5 26.Ke6 Kh7 27.Dc7 Kg7 28.De7 
  +-  (6.76 --)   Tiefe: 43/63   00:01:08  968mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dc8+ Kg7 7.Dd7 Kf8 8.De6 Sg8 9.Df5 Se5 10.Kg3 Kg7 11.De6 Kf8 12.Db6 Kg7 13.Da7+ Kh8 14.Db7 Sh6 15.De7 Sg8 16.Df8 Sd7 17.Dc8 Se5 18.Dc7 Sh6 19.Dd8+ Sg8 20.Df8 
  +-  (6.46)   Tiefe: 43/63   00:01:12  1017mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dc8+ Kg7 7.Dd7 Kf8 8.De6 Sg8 9.Df5 Se5 10.Dh7 Sf7 11.Kg3 Sgh6 12.Kf3 Ke7 13.Dg7 Ke6 14.Kg3 Ke7 15.Kh3 f5 16.gxf5 Sxf5 17.Dc3 Ke6 18.Db3+ Ke7 19.Db7+ Kf6 20.Db2+ Se5 21.Db6+ Ke7 22.Dc7+ Ke6 23.Dc8+ Sd7 24.Da6+ Sd6 25.Kg4 Sf6+ 26.Kxg5 Sfe4+ 27.Kf4 Sc5 28.De2+ Kd7 29.h6 
  +-  (6.54 --)   Tiefe: 44/63   00:01:14  1046mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db7 Sgh6 8.Db4+ Ke8 9.Da4+ Kf8 10.Da8+ Ke7 11.De4+ Kd7 12.Kg2 Se5 13.Dh7+ Sef7 14.Dg7 Ke7 15.Kh3 f5 16.gxf5 Sxf5 17.Dc3 Ke6 18.Db3+ Kf6 19.Db6+ Ke7 20.Dc5+ Ke6 21.Dc4+ Kf6 22.Dc6+ Ke7 23.Dc5+ 
  +-  (6.62 --)   Tiefe: 44/63   00:01:16  1070mN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Kg2 Kg7 6.Dd4 Sb5 7.Dd3 Sfd6 8.h5 gxh5 9.gxh5 f5 10.Dg3+ Kf6 11.h6 
  +-  (6.74 --)   Tiefe: 44/63   00:01:17  1091mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Kg8 6.Dd5 Kg7 7.Dc5 
  +-  (6.92 --)   Tiefe: 44/65   00:01:32  1311mN
1...Sf7 2.Kh3 S5d6 3.g4 hxg4+ 4.fxg4 Kf8 5.Kg2 Ke7 6.De3+ Se5 7.h5 gxh5 8.gxh5 Sf5 9.Df4 Sg4 10.Kh3 Sgh6 11.Dc7+ Ke8 12.Dc5 Se7 13.De3 Sf7 14.h6 Kf8 15.h7 Sg6 16.Kg4 Kg7 17.Da7 Sge5+ 18.Kf5 Sg6 19.Dd7 
  +-  (7.20 --)   Tiefe: 44/67   00:01:41  1474mN
1...Sf7 2.Kh3 Se5 3.g4 Sh6 4.gxh5 gxh5 5.f4 Sg6 6.Kg3 f5 7.Dc7+ Sf7 8.Dc3+ Kh7 9.Df6 Sh6 10.Dd8 Kg7 11.Dg5 Sg8 12.Dxh5 S6e7 13.De8 Sd5 14.h5 Sde7 15.Kf3 Kf6 16.Df8+ Ke6 17.h6 
  +-  (7.61 --)   Tiefe: 44/69   00:01:55  1702mN
1...Sf7 2.Kh3 S5d6 3.g4 Kh6 4.Dc3 Kg7 5.Dd4 Sb5 6.Db2 Sbd6 7.g5 Se8 8.Dd4 Sfd6 9.gxf6+ Kf7 10.f4 Kf8 11.Dc5 Kf7 12.Da7+ Ke6 13.De7+ Kf5 14.f7 
  +-  (8.22 --)   Tiefe: 44/77   00:02:21  2143mN
1...Sf7 2.Kh3 Se5 3.g4 Sh6 4.g5 Shf7 5.gxf6+ Kxf6 6.f4 Sg4 7.Dc3+ Ke6 8.Dc2 Sd6 9.Dxg6+ Sf6 10.Dd3 Kd7 11.Dd2 Sfe4 12.De2 Kc6 13.Dxh5 Sf6 14.De5 Sfe4 15.h5 Sf2+ 16.Kg2 Sg4 17.Dg5 
  +-  (9.13 --)   Tiefe: 44/82   00:03:55  3689mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sh8 6.Dd5 S8f7 7.Dd7 Kf8 8.De6 Kg7 9.Kg3 Se5 10.De7+ Sef7 11.Kf3 f5 12.gxf5 Sxf5 13.Db7 Kf6 14.Da6+ S5d6 15.Da1+ Ke7 16.Kg4 Ke6 17.Db1 Ke7 18.Kh3 Sh6 19.Dh7+ Sdf7 20.Dg6 Kf8 
  +-  (9.05)   Tiefe: 44/96   00:06:33  6307mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Dc7 Kf8 7.Db8+ 
  +-  (8.96 ++)   Tiefe: 45/96   00:07:08  6866mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Kg3 Se5 8.Db8+ Kg7 9.Da7+ Kf8 
  +-  (8.88 ++)   Tiefe: 45/96   00:07:09  6874mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Kg3 Se5 8.Db8+ Kg7 9.Da7+ Kf8 
  +-  (8.76 ++)   Tiefe: 45/96   00:07:09  6877mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Da8+ Kg7 8.Da7 
  +-  (8.58 ++)   Tiefe: 45/96   00:07:10  6883mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db7 Se5 8.Dc8+ Kg7 9.Kg3 Sh6 10.Db7+ Kf8 11.Dc8+ Kf7 12.Dc5 Shxg4 13.Dc7+ Ke6 14.Db6+ Ke7 15.h6 Sxh6 16.Db4+ Ke6 17.Db6+ Kf5 18.Db1+ Ke6 19.Db6+ 
  +-  (8.31 ++)   Tiefe: 45/96   00:07:11  6894mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db7 Se5 8.Dh7 Sf7 9.Df5 Se5 10.Kg2 Kg7 11.De6 Sh6 12.De7+ Sef7 13.Kf3 f5 14.gxf5 Sxf5 15.Db7 S5h6 16.Db2+ Kf8 17.Dc3 g4+ 18.Ke4 Sd6+ 19.Kd5 Se8 20.Db4+ Kf7 21.Ke5 Kg8 22.Df4 Kh7 23.De4+ Kh8 
  +-  (9.05)   Tiefe: 45/96   00:07:25  7106mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Da8+ Kg7 8.Da7 
  +-  (8.96 ++)   Tiefe: 46/96   00:07:32  7196mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db8+ Kg7 8.Dc7 Kf8 9.Db8+ 
  +-  (8.88 ++)   Tiefe: 46/96   00:07:33  7208mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db8+ Kg7 8.Dc7 Kf8 9.Kg3 Se5 10.Dh7 Sf7 11.Df5 Se5 12.Kg2 Kg7 13.Dc8 Kh8 14.h6 Sf7 15.Df5 Sfxh6 16.Dd7 f5 17.gxf5 Sf6 
  +-  (8.76 ++)   Tiefe: 46/96   00:07:33  7216mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Kf8 7.Db8+ Kg7 8.Db7 Kf8 9.Da6 Se5 10.Dc8+ Kg7 11.h6+ Sxh6 12.Dd8 Sexg4 13.Dd7+ Kg6 14.De8+ Kg7 15.Dd7+ 
  +-  (8.58 ++)   Tiefe: 46/96   00:07:34  7227mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Dc7 Kf8 7.Dd7 Se5 8.Dc8+ Kf7 9.Db7+ Kf8 10.Dc8+ 
  +-  (8.31 ++)   Tiefe: 46/96   00:07:40  7317mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Dc7 Kf8 7.Db8+ Kg7 8.Db7 Kf8 9.Dd7 Se5 10.Dc8+ Kg7 11.h6+ Sxh6 12.Dd8 Sexg4 13.Dd7+ Kg6 14.De8+ Kg7 15.Dd7+ 
  +-  (7.90 ++)   Tiefe: 46/96   00:07:43  7368mN
1...Sf7 2.Kh3 S5h6 3.g4 hxg4+ 4.fxg4 g5 5.h5 Sg8 6.Da7 Sgh6 7.Dc7 Kf8 8.Dc8+ Kg7 9.Dd7 Kf8 10.De6 Sg8 11.Kg3 Se5 12.Kg2 Kg7 13.Kf2 Sh6 14.De7+ Kg8 15.Ke3 Sexg4+ 16.Kf3 Kh8 17.Df8+ Kh7 18.Kg3 Sf5+ 19.Kxg4 Se3+ 20.Kf3 Sf5 21.Df7+ Kh8 22.Dxf6+ Sg7 23.Dxg5 
  +-  (9.13 --)   Tiefe: 46/96   00:07:51  7479mN
1...Sf7 2.Kh3 Sg5+ 3.hxg5 fxg5 4.De5+ Kh7 5.g4 
  +-  (10.04 --)   Tiefe: 46/96   00:09:26  8992mN

That's with 12 cores and 8Gb hash.

And yes, Houdini3 seems to be better yet then 2 as for this position, in H3 everybody is interested anyhow, so thanks for coming up with it here, I guess the position is a good one to test with.

Here is H2 without usage of any tbs on 12 cores with 8Gb hash:

Code: Select all

81: Haupt - Bauer, Forum
7n/6k1/5pp1/2Q2n1p/7P/5PP1/6K1/8 b - - 0 1

Analysis by Houdini 2.0c Pro x6414:

1...Sf7 2.Da7 S5d6 3.g4 Sc4 4.Kg3 hxg4 5.fxg4 
  +-  (3.78)   Tiefe: 7/15   00:00:07  2kN
1...Sf7 2.Da7 S5d6 3.g4 Sc4 4.Kg3 hxg4 5.fxg4 Sce5 
  +-  (3.80)   Tiefe: 8/15   00:00:07  3kN
1...Sf7 2.Da7 Kf8 3.Kf2 Kg7 4.f4 S5d6 5.Kf3 Sc4 
  +-  (3.79)   Tiefe: 9/15   00:00:07  10kN
1...Sf7 2.Da7 Kf8 3.Kf2 Se5 4.f4 Sg4+ 5.Kf3 Kg8 6.Dd7 Kf8 
  +-  (3.82)   Tiefe: 10/19   00:00:07  19kN
1...Sf7 2.Da7 Kf8 3.Db8+ Kg7 4.Dc7 Sd4 5.Dd7 Sf5 6.Kf2 S5d6 7.g4 Sc4 8.gxh5 gxh5 9.Kg3 
  +-  (3.77)   Tiefe: 11/19   00:00:07  45kN
1...Sf7 2.Da7 Kf8 3.Db8+ Kg7 4.Dc7 Kg8 5.Dd7 Kg7 6.Kf2 S5d6 7.g4 Sc4 8.gxh5 gxh5 9.Kg3 
  +-  (3.77)   Tiefe: 12/19   00:00:07  84kN
1...Sf7 2.Dc7 Se3+ 3.Kf2 Sf5 4.Dd7 Kg8 5.Dc8+ Kg7 6.Dc7 Kg8 7.Dc6 Kg7 8.Dc7 Kg8 
  +-  (3.84)   Tiefe: 13/25   00:00:07  172kN
1...Sf7 2.Dc7 Se3+ 3.Kh3 Sf5 4.g4 hxg4+ 5.fxg4 S5d6 6.Kg3 Kh6 7.Dc6 Kg7 8.h5 gxh5 9.gxh5 Kh6 10.Df3 
  +-  (3.98)   Tiefe: 14/25   00:00:07  270kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kh7 5.De7 Kg7 6.g5 fxg5 7.hxg5 Kg8 8.f4 Kg7 9.Kh2 Kh7 
  +-  (3.96)   Tiefe: 15/27   00:00:07  466kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 hxg4 6.fxg4 Sb5 7.Dc5 Sfd6 8.Dc6 Kh6 9.Kg3 Kg7 10.h5 gxh5 11.gxh5 
  +-  (3.98)   Tiefe: 16/27   00:00:07  574kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 hxg4 6.fxg4 Sb5 7.Dc5 Sfd6 8.De3 Sf7 9.h5 gxh5 10.Dd3 Sfd6 11.gxh5 
  +-  (4.04)   Tiefe: 17/30   00:00:07  1137kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 Kh6 6.Dc5 hxg4 7.fxg4 Kh7 8.Dc7 Kg7 9.Kg3 Kh6 10.Dc6 Kg7 11.Dd5 f5 12.Dd4+ Kf8 13.Da7 fxg4 14.Dc5 Ke7 15.Kxg4 Ke6 16.Kf4 Sf5 17.Dc8+ Kf6 18.Dc3+ Ke7 19.De1+ Kf6 20.Dc3+ Ke7 
  +-  (4.07)   Tiefe: 18/31   00:00:07  1863kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 hxg4 6.fxg4 Se4 7.De7 Sed6 8.De6 Sb5 9.g5 fxg5 10.hxg5 Sbd6 11.Df6+ Kh7 12.De7 Kg8 13.Df6 Kh7 14.De7 
  +-  (4.08)   Tiefe: 19/39   00:00:07  3026kN
1...Sf7 2.Dc7 Kg8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 hxg4 6.fxg4 f5 7.g5 Se4 8.Kf3 Kg8 9.Kf4 Kf8 10.Da7 Kg7 11.Dd4+ Kg8 12.Dd5 Kg7 13.Db7 Sc5 14.Dd5 Se4 15.Db7 
  +-  (4.13)   Tiefe: 20/39   00:00:07  5608kN
1...Sf7 2.Dc7 Kf8 3.Kh3 S5d6 4.g4 hxg4+ 5.fxg4 Kg8 6.Kg3 Kg7 7.Kg2 f5 8.g5 Se4 9.Kf3 Kg8 10.Kf4 Kf8 11.Da7 Kg7 12.Dd4+ Kg8 13.Dd5 Kf8 14.Dd7 Kg7 15.Da7 Kg8 16.Dd7 Kg7 17.Da7 
  +-  (4.13)   Tiefe: 21/39   00:00:08  9262kN
1...Sf7 2.Dc7 Kf8 3.Kh3 S5d6 4.g4 Kg7 5.Kg2 Kg8 6.gxh5 gxh5 7.Dc5 f5 8.Dd4 Kh7 9.Kg3 Kg6 10.Kf4 Sb5 11.Dd7 Sbd6 12.De6+ Kg7 13.De3 Kg6 14.Dc5 Kf6 15.Dd4+ Kg6 16.De3 Kf6 17.Dc5 Kg6 18.Dd4 Sb5 
  +-  (4.14)   Tiefe: 22/39   00:00:08  10698kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Kg2 Sf5 6.Dc3+ Kg6 7.Dc6+ Kg7 8.De6 S5h6 9.Dh3 Kg6 10.Dc8 Kg7 11.Dc3+ Kg6 12.Dd3+ Kg7 13.Dd4+ Kg6 14.Db6+ Kg7 15.Db2+ Kg6 16.Db1+ Kg7 17.Da1+ Kg6 18.Da6+ Kg7 19.De6 Sg8 20.Dc4 Sf6 21.Kf2 Kg6 22.Dc6 
  +-  (4.23)   Tiefe: 23/42   00:00:08  22746kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Kg2 Sf5 6.Dc3+ Kg6 7.Dc6+ Kg7 8.De6 S5h6 9.Dh3 Kg6 10.Dc8 Kg7 11.Dc3+ Kg6 12.Dd3+ Kg7 13.Dd4+ Kg6 14.Db6+ Kg7 15.Db2+ Kg6 16.Db1+ Kg7 17.Da1+ Kg6 18.Da6+ Kg7 19.De6 Sg8 20.Dc4 Sf6 21.Kf2 Kg6 22.Dc6 
  +-  (4.23)   Tiefe: 24/43   00:00:08  25791kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Kg2 Sf5 6.Dc3+ Kg6 7.Dc6+ Kg7 8.De6 S5h6 9.Dh3 Kg6 10.Dc8 Kg7 11.Dc3+ Kg6 12.Dd3+ Kg7 13.Dd4+ Kg6 14.Db6+ Kg7 15.Db2+ Kg6 16.Db1+ Kg7 17.Da1+ Kg6 18.Da6+ Kg7 19.De6 Sg8 20.Dc4 Sf6 21.Kf2 Kg6 22.Dc6 
  +-  (4.23)   Tiefe: 25/43   00:00:09  30541kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Kg2 Sf5 6.Dc3+ Kg6 7.Dc6+ Kg7 8.De6 S5h6 9.Dh3 Kg6 10.Dc8 Kg7 11.Dc3+ Kg6 12.Dd3+ Kg7 13.Dd4+ Kg6 14.Db6+ Kg7 15.Db2+ Kg6 16.Db1+ Kg7 17.Da1+ Kg6 18.Da6+ Kg7 19.De6 Sg8 20.Dc4 Sf6 21.Kf2 Kg6 22.Dc6 
  +-  (4.23)   Tiefe: 26/43   00:00:09  41510kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Kg2 Sf5 6.Dc3+ Kg6 7.Dc6+ Kg7 8.De6 S5h6 9.Dh3 Kg6 10.Dc8 Kg7 11.Dc3+ Kg6 12.Dd3+ Kg7 13.Dd4+ Kg6 14.Db6+ Kg7 15.Db2+ Kg6 16.Db1+ Kg7 17.Da1+ Kg6 18.Da6+ Kg7 19.Da1+ Kg6 
  +-  (4.23)   Tiefe: 27/43   00:00:10  59899kN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Dc3+ Kg6 6.Dc6+ Kg7 7.De6 Sg8 8.f4 Sf6 9.Df5 g4+ 10.Kh4 Sd6 11.De6 Sde4 12.f5 Kf8 13.Dc6 Ke7 14.Dc7+ Kf8 15.Db8+ Kf7 16.Da7+ Kf8 17.Dc7 Ke8 18.Dc8+ Kf7 19.Db7+ Ke8 20.Db6 Kf7 21.Db7+ Ke8 
  +-  (4.39)   Tiefe: 28/43   00:00:13  116mN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Dc3+ Kg6 6.Dc6+ Kg7 7.De6 Sg8 8.f4 Sf6 9.Df5 g4+ 10.Kh4 Sd6 11.De6 Sde4 12.f5 Kf8 13.Dc6 Ke7 14.Dc7+ Kf8 15.Db8+ Kf7 16.Da7+ Kf8 17.Dc7 Ke8 18.Dc8+ Kf7 19.Db7+ Ke8 20.Db6 Kf7 21.Db7+ Ke8 
  +-  (4.39)   Tiefe: 29/49   00:00:15  155mN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Dc3+ Kg6 6.Dc6+ Kg7 7.De6 Sg8 8.f4 Sf6 9.Df5 g4+ 10.Kh4 Sd6 11.De6 Sde4 12.f5 Kf8 13.Dc6 Ke7 14.Dc7+ Kf8 15.Db8+ Kf7 16.Da7+ Kf8 17.Dc7 Ke8 18.Db6 Kf7 19.Db7+ Ke8 20.Db6 Kf7 
  +-  (4.39)   Tiefe: 30/49   00:00:16  183mN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Dc3+ Kg6 6.Dc6+ Kg7 7.De6 Sg8 8.f4 Sf6 9.Df5 g4+ 10.Kh4 Sd6 11.De6 Sde4 12.f5 Kf8 13.Dc6 Ke7 14.Dc7+ Kf8 15.Db8+ Kf7 16.Da7+ Kf8 17.Dc7 Ke8 18.Db6 Kf7 19.Db7+ Ke8 20.Db6 Kf7 
  +-  (4.39)   Tiefe: 31/49   00:00:19  235mN
1...Sf7 2.Dc7 S5h6 3.Kh3 g5 4.hxg5 fxg5 5.Dc3+ Kg6 6.Dc6+ Kg7 7.De6 Sg8 8.f4 Sf6 9.Df5 g4+ 10.Kh4 Sd6 11.De6 Sde4 12.f5 Kf8 13.Dc6 Ke7 14.Dc7+ Kf8 15.Db8+ Kf7 16.Da7+ Kf8 17.Dc7 Ke8 18.Db6 Kf7 19.Db7+ Ke8 20.Dc8+ Kf7 21.Db7+ Ke8 
  +-  (4.39)   Tiefe: 32/57   00:00:23  325mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Df8 Sd7 
  +-  (4.45)   Tiefe: 33/57   00:00:36  623mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Db8+ Kg7 15.De8 
  +-  (4.45)   Tiefe: 34/57   00:00:45  810mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Db7+ Kf8 
  +-  (4.45)   Tiefe: 35/59   00:00:57  1058mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Db7+ Kf8 
  +-  (4.45)   Tiefe: 36/61   00:01:12  1392mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da3 Kf7 16.Db3+ Kg7 17.De6 Sf7 18.Dc8 Se5 19.Db7+ 
  +-  (4.45)   Tiefe: 37/62   00:01:31  1815mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da3 Kf7 16.Db3+ Kg7 17.De6 Sf7 18.Dc8 Se5 19.Db7+ 
  +-  (4.45)   Tiefe: 38/65   00:02:00  2476mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da3 Kf7 16.Db3+ Kg7 17.De6 Sf7 18.Dc8 Se5 19.Db7+ 
  +-  (4.45)   Tiefe: 39/69   00:02:42  3458mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dh7 Sf7 17.Df5 Se5 18.De6 Kg7 19.Kg2 Kh7 20.Kg3 Kg7 21.Kh3 Sf7 22.Dc8 Se5 23.Db7+ 
  +-  (4.45)   Tiefe: 40/69   00:03:39  4806mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dc5+ Kf7 17.Dd5+ Kg7 18.De6 Sf7 19.Dc8 Se5 20.Db7+ 
  +-  (4.45)   Tiefe: 41/75   00:05:03  6862mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dc5+ Kf7 17.Dd5+ Kg7 18.De6 Sf7 19.Dc8 Se5 20.Db7+ 
  +-  (4.45)   Tiefe: 42/77   00:06:45  9385mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dc5+ Kf7 17.Dd5+ Kg7 18.De6 Sf7 19.Dc8 Se5 20.Db7+ 
  +-  (4.45)   Tiefe: 43/81   00:09:32  13613mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dc5+ Kf7 17.Dd5+ Kg7 18.De6 Sf7 19.Dc8 Se5 20.Db7+ 
  +-  (4.45)   Tiefe: 44/81   00:13:50  20317mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kf8 14.Da8+ Kg7 15.Da7+ Kf8 16.Dc5+ Kf7 17.Dd5+ Kg7 18.De6 Sf7 19.Dc8 Se5 20.Db7+ 
  +-  (4.45)   Tiefe: 45/85   00:18:59  28364mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kh8 14.Da8 Kg7 15.Da7+ Sf7 16.Kg2 Sgh6 17.Kg3 Kg8 18.Db6 Kg7 19.Db7 Kg8 20.Dc8+ Kg7 21.Dd7 Kf8 22.De6 Kg7 23.De8 Se5 24.De7+ Sef7 25.De6 Se5 26.De7+ Sef7 
  +-  (4.45)   Tiefe: 46/85   00:27:21  41595mN
1...Sf7 2.Dc7 S5h6 3.Kh3 Kh8 4.g4 hxg4+ 5.fxg4 g5 6.h5 Se5 7.Dd8+ Sg8 8.Df8 Sd7 9.Dc8 Se5 10.Db8 Kg7 11.De8 Kh8 12.Dc8 Kg7 13.Db7+ Kh8 14.Da8 Kg7 15.Da7+ Sf7 16.Kg2 Sgh6 17.Kg3 Sg8 18.Dd7 Sgh6 19.Kh3 Kf8 20.Dc8+ Kg7 21.Db7 Kg8 22.Db8+ Kg7 23.Db4 Se5 24.De7+ Sef7 25.Dd7 Kf8 
  +-  (4.45)   Tiefe: 47/89   00:39:39  61184mN

ernest · Post by **ernest** » Wed Sep 12, 2012 3:59 pm

Houdini wrote:Engine: Houdini 3 (4096 MB) by Robert Houdart
...
Score +14.43, winning!

Hi Robert,

Well, unless your result is just a case of SMP luck

, Houdini 3 on that analysed position is a big improvement compared to my Houdini 2.0c:
more than +7 eval at depth 33 and 1.6 Gnodes
more than +9 eval at depth 38 and 12.6 Gnodes
and even more than +14 eval at depth 38 and 19.6 Gnodes

(at depth 43 and 253 Gnodes, I was still at (5.79) eval!)

Endgame position: progress in eval?

Re: Endgame position: progress in eval?

Re: Endgame position: progress in eval?

Re: Endgame position: progress in eval?

Re: Endgame position: progress in eval?

Re: Endgame position: progress in eval?