Interesting tactical position from infinity chess

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Dann Corbit
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Location: Redmond, WA USA

Interesting tactical position from infinity chess

Post by Dann Corbit »

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

How long until your engine sees utter devastation for white?
Does not take too long to see the right move, but it takes a bit to see how damaging it is.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
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BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: Interesting tactical position from infinity chess

Post by BBauer »

Dann Corbit wrote: ↑Sat Jun 23, 2018 9:32 am 1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

How long until your engine sees utter devastation for white?
Does not take too long to see the right move, but it takes a bit to see how damaging it is.
This I would call a test position.
A really nice one.
Remove that black night and make use of that h-pawn.

Kind regards
Bernhard
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jdart
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Re: Interesting tactical position from infinity chess

Post by jdart »

Here is another cute one I have been looking at recently (but not too difficult):

r1b1k2r/1p1nbp1p/pB2pp2/3NP2q/B4R2/1R6/P1PQ3P/4K3 b kq - 0 1

exd5 is losing. Black must play Qxe5 and then can draw. Engines will understand that Black is danger, but the gain of Knight for pawn looks so tempting. Seeing it is really bad requires finding some quiet moves.

--Jon
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Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Interesting tactical position from infinity chess

Post by Paloma »

BBauer wrote: ↑Sat Jun 23, 2018 3:25 pm
Dann Corbit wrote: ↑Sat Jun 23, 2018 9:32 am 1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

How long until your engine sees utter devastation for white?
Does not take too long to see the right move, but it takes a bit to see how damaging it is.
This I would call a test position.
A really nice one.
Remove that black night and make use of that h-pawn.

Kind regards
Bernhard
This I would call NOT a test position.

btw. What black night ?
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BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: Interesting tactical position from infinity chess

Post by BBauer »

Paloma wrote: ↑Sat Jun 23, 2018 9:37 pm
BBauer wrote: ↑Sat Jun 23, 2018 3:25 pm
Dann Corbit wrote: ↑Sat Jun 23, 2018 9:32 am 1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

How long until your engine sees utter devastation for white?
Does not take too long to see the right move, but it takes a bit to see how damaging it is.
This I would call a test position.
A really nice one.
Remove that black night and make use of that h-pawn.

Kind regards
Bernhard
This I would call NOT a test position.

btw. What black night ?
Sorry, I meant the white night.

Why not a test position?
Kind regards
Bernhard
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Eelco de Groot
Posts: 4565
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Re: Interesting tactical position from infinity chess

Post by Eelco de Groot »

Dann Corbit wrote: ↑Sat Jun 23, 2018 9:32 am 1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

How long until your engine sees utter devastation for white?
Does not take too long to see the right move, but it takes a bit to see how damaging it is.
How should we measure 'devastation' Dann :) Kaissa gets +3.15 for Black but I don't think that is enough to qualify as "utter devastation". It does not go very fast with just one thread, but I'm sure with big machines you can get a higher score.


1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

Engine: Kaissa 040 (i7 6700, one thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

21/19 0:01 -1.03 1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+
4.Rg3 Qxe4 5.Rd1 Rb2 6.Qe3 Qxe3+
7.Rxe3 Rg2+ 8.Kh1 Rxa2 9.Nc4 Rb3
10.Rxb3 axb3 11.Nxe5 (3.737.298) 2426

22/18 0:01 -0.65 1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+
4.Rg3 Qxe4 5.Rd1 Rb2 6.Qe3 Qxe3+
7.Rxe3 Rg2+ 8.Kh1 Rxa2 9.Nc4 Rb3 (4.523.843) 2454

23/18 0:02 -0.57 1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+
4.Rg3 Qxe4 5.Rd1 Rb2 6.Qe3 Qxe3+
7.Rxe3 Rg2+ 8.Kh1 Rxa2 9.Rxh3 Rb3
10.Rxb3 axb3 (5.601.172) 2508

24/17 0:03 -0.65++ 1...Rb1 (8.241.866) 2534

24/17 0:03 -0.72++ 1...Rb1 (8.396.019) 2538

24/17 0:03 -0.85++ 1...Rb1 (8.404.882) 2539

24/17 0:03 -1.02++ 1...Rb1 (8.412.559) 2539

24/20 0:03 -1.24++ 1...Rb1 (8.638.080) 2543

24/23 0:03 -1.25 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.a3 Kh6
8.Qd1 Kg7 9.Qa1 Kh7 10.Qd1 Qxa3
11.Kh1 Qe3 12.Qd2 Qc5 (8.733.576) 2544

25/21 0:03 -1.33++ 1...Rb1 (9.086.840) 2556

25/24 0:03 -1.18-- 1...Rb1 2.Nxb1 (9.844.775) 2547

25/24 0:03 -1.30++ 1...Rb1 (9.935.554) 2548

25/24 0:03 -1.07-- 1...Rb1 2.Nxb1 (10.087.860) 2548

25/24 0:04 -0.85-- 1...Rb1 2.Nxb1 (10.470.702) 2549

25/24 0:04 -1.17++ 1...Rb1 (10.471.334) 2549

25/24 0:04 -1.36 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qd1 a3 8.Qd2 Qb6 9.Qe1 Bxa2 10.Qf1 Be6
11.Kh1 a2 (10.652.606) 2548

26/22 0:04 -1.37 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.a3 Kh6
8.Qd1 Kg7 9.Qa1 Kh7 10.Qd1 Qxa3
11.Kh1 Qe3 12.Qd2 (11.096.234) 2546

27/22 0:04 -1.45++ 1...Rb1 (12.099.198) 2564

27/26 0:04 -1.30-- 1...Rb1 2.Nxb1 (12.635.064) 2556

27/26 0:05 -1.41++ 1...Rb1 (12.880.140) 2566

27/26 0:05 -1.57++ 1...Rb1 (12.920.193) 2566

27/26 0:05 -1.30 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8
7.Qd1 a3 8.Qb1 Kh7 9.Qa1 Kh6 10.Qb1 Kg7
11.Qa1 Kh7 12.Qd1 Qb6 13.Qe1 Bxa2 (13.017.753) 2567
.
.
.
37/34 3:12 -2.45 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qd1 a3 8.Qa1 Qb6 9.g5 Qa7 10.Qb1 Qd4
11.Qe1 Bxa2 12.Kh1 Be6 13.Rd2 Qb6
14.Rd1 Kg8 (593.269.328) 3088

38/34 5:33 -2.38-- 1...Rb1 2.Nxb1 (1.024.107.185) 3072

38/34 5:33 -2.45++ 1...Rb1 (1.024.390.576) 3071

38/39 6:07 -2.57++ 1...Rb1 (1.123.399.489) 3053

38/39 6:12 -2.72++ 1...Rb1 (1.137.149.548) 3049

38/41 6:31 -2.36 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qd1 a3 8.g5 Kg7 9.Qd2 Qb6 10.Qc1 Qd4
11.Qb1 Be2 12.Qc1 Kh7 13.Qb1 Qc5
14.Qe1 Bxf3 (1.190.020.957) 3036

39/24 9:00 -2.44++ 1...Rb1 (1.661.353.013) 3073

39/29 9:02 -2.51++ 1...Rb1 (1.666.720.515) 3072

39/38 9:06 -2.62++ 1...Rb1 (1.677.042.065) 3069

39/38 9:13 -2.63 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8
7.Qd1 a3 8.Qd8+ Kg7 9.Qd1 Kh7 10.g5 Kg7
11.Qd2 Qb6 12.Qc1 Qd4 13.Qb1 Kg8
14.Qc1 Kh8 (1.697.588.970) 3066

40/35 12:27 -2.63 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8
7.Qd1 a3 8.Qd8+ Kg7 9.Qd1 Kh7 10.g5 Kg7
11.Qd2 Qb6 12.Qc1 Qd4 13.Qb1 Kg8
14.Qc1 Kh8 (2.293.848.060) 3068

41/37 18:53 -2.71++ 1...Rb1 (3.452.810.927) 3045

41/37 19:14 -2.71 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8
7.Qd1 a3 8.Qd8+ Kg7 9.Qd1 Kh7 10.g5 Kg7
11.Qd2 Qb6 12.Qc1 Qd4 13.Qb1 Kh8
14.Qe1 Bxa2 (3.506.326.351) 3037

42/43 48:10 -2.63-- 1...Rb1 2.Nxb1 (8.566.969.761) 2964

42/43 51:19 -2.71++ 1...Rb1 (9.117.122.477) 2960

42/43 51:45 -2.82++ 1...Rb1 (9.184.580.086) 2957

42/43 54:00 -2.56-- 1...Rb1 2.Nxb1 (9.552.675.377) 2948

42/43 54:00 -2.77++ 1...Rb1 (9.553.130.512) 2947

42/43 54:21 -3.01 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8
7.Qd1 a3 8.g5 Qc5 9.Qd8+ Kg7 10.Qd2 Qb6
11.Qc1 Qd4 12.Qb1 Kg8 13.Qb8+ Kh7
14.Qb1 Kg7 (9.607.494.212) 2945

43/30 81:38 -2.94-- 1...Rb1 2.Nxb1 (14.301.299.829) 2919

43/33 105:54 -3.01++ 1...Rb1 (18.607.434.220) 2928

43/36 106:09 -3.12++ 1...Rb1 (18.644.832.563) 2927

43/42 106:28 -3.28++ 1...Rb1 (18.696.793.742) 2926

43/42 106:43 -3.15 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qb1 a3 8.Qd1 Kg8 9.Qa1 Qb6 10.g5 Qe3
11.Qd1 Kg7 12.Qd2 Qb6 13.Qc2 Qd4
14.Qb1 Kg8 (18.733.265.382) 2925
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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peter
Posts: 3186
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Interesting tactical position from infinity chess

Post by peter »

Hi Eelco!
Eelco de Groot wrote: ↑Sun Jun 24, 2018 4:47 am It does not go very fast with just one thread, but I'm sure with big machines you can get a higher score.


1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

Engine: Kaissa 040 (i7 6700, one thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
..
43/42 106:43 -3.15 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qb1 a3 8.Qd1 Kg8 9.Qa1 Qb6 10.g5 Qe3
11.Qd1 Kg7 12.Qd2 Qb6 13.Qc2 Qd4
14.Qb1 Kg8 (18.733.265.382) 2925[/color]
24 threads, 32G hash:

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - - 0 1

Analysis by CorChess 2.4 180618 64 POPCNT:

1...Rc7 2.c5 f6 3.c6 Rbc8 4.Rd6 Qxc1+ 5.Rxc1
= (0.20) Depth: 7/8 00:00:00 60kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.Qd1 a3 8.g5 Qb6 9.Qa1 Be2 10.Qe1 Bxf3 11.Kf1 Bg2+ 12.Ke2 Qb2+ 13.Qd2
-/+ (-0.79) Depth: 17/25 00:00:00 2009kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kg8 8.Qd1 Qb6 9.Qa1 Kh7 10.Qc1 Qd4 11.Qb1 Kg8 12.Qc1 Kg7 13.g5 Be2 14.Qe1 Bxf3 15.Qd2 Qxe4 16.Qc3 Bg2 17.Rc2 Qf5 18.Rc1 Bf3 19.Re1 Qxg5+ 20.Kf2 Qg2+ 21.Ke3 Bh5 22.Qxe5+ Kh7 23.Kd3 Qxa2 24.Qd4 Qb3+ 25.Qc3 Qb8 26.Qe5 Qb4 27.Qc3 Qf4 28.Qd4 Qf3+ 29.Qe3 Qg2 30.Qd2 Bg4 31.Qxg2 hxg2 32.Ke3 Be6 33.Kf3
-+ (-2.57) Depth: 36/77 00:00:18 410MN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8 7.Qb1 a3 8.Qd1 Kh7 9.Qd2 Qb6 10.Qe1 Bxa2 11.Qf1 Kg7 12.Qxh3 Bc4 13.Kg2 Qxf2+ 14.Kxf2 a2 15.Qg2 a1Q 16.h4 Qb2+ 17.Kg3 Qc1 18.Qf2 Bf1 19.Kh2 Qd1 20.Kg1 Be2+ 21.Kg2 Qd2 22.Kh2 Qf4+ 23.Kg2 Bd1 24.Qf1 Qd2+ 25.Qf2 Qd4 26.Qf1 Kg8 27.Qf2 Qd3 28.Kg3
-+ (-2.98) Depth: 38/83 00:00:48 1123MN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kh7 8.Qd1 Qc5 9.Qd2 Qb6 10.Qc2 Qd4 11.Qb1 Be2 12.Qc1 Bxf3 13.Qxa3 Bg2 14.Qc1 Bxe4 15.Kf1 Bd3+ 16.Ke1 Qb4+ 17.Qd2 Qe4+ 18.Kd1 Qxg4+ 19.Kc1 Qd4 20.Qb2 Qc5+ 21.Kd1 f5 22.Qb7+ Kh6 23.Qf3 Qd4 24.Qxh3+ Kg7 25.Qg3 f4 26.Qh4 Be4+ 27.Ke1 Qa1+ 28.Ke2 Qxa2+ 29.Ke1 Qb1+ 30.Kd2 Qb4+ 31.Kc1 Qa3+ 32.Kd2 Qe3+ 33.Kd1 Bf3+ 34.Rxf3 Qxf3+ 35.Ke1 Qe4+ 36.Kf1 Qd3+ 37.Kg2 Qd5+ 38.Kf2 Qd4+ 39.Kf1 Qd6 40.Qe1 Qd3+ 41.Kf2 Kf6 42.Qc1 Kg5
-+ (-4.16) Depth: 47/102 00:06:02 8664MN

Because the position isn't very hard, single thread could be yet used well too for better reproducibility.
Here is CoreChess again started with empty hash on 1 switched on HT- thread, so not even with full 1 core- power of the same 2.9- GHz Intel CPU:

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - - 0 1

Analysis by CorChess 2.4 180618 64 POPCNT:

1...Rc8 2.Rf2 Qxc1+ 3.Rxc1 f5 4.exf5 gxf5 5.gxf5
= (-0.04) Depth: 7/8 00:00:00 3kN
...
1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qxe3+ 7.Rxe3 Rxc2 8.Nxc2 Rb2 9.Ne1 Rxa2 10.Rxe5 a3 11.Re3 f5 12.Rxh3 g5 13.Rb3 Re2 14.Rxa3 Rxe1+ 15.Kf2 Re4 16.Kg3 Rh4 17.Ra5
-/+ (-0.89) Depth: 22/42 00:00:02 3265kN
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4 7.Qb2+ f6 8.Qd2 Qb6 9.Qxf4 a3 10.e5 Qb1+ 11.Rf1 Qxf1+ 12.Qxf1 Bxf1 13.exf6+ Kxf6 14.Kxf1 Kg5 15.Kf2 Kxg4 16.Ke3 Kg5 17.Kf3 Kh4 18.Kf2
-/+ (-0.99) Depth: 23/43 00:00:03 4517kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4 7.Qb2+ f6 8.Qd2 Qb6 9.Qxf4 g5 10.Qc1 Qd4 11.Qb1 Be2 12.a3 Kg6 13.e5+ Kh6 14.Qf5 Qa1+ 15.Rf1 Qxf1+ 16.Qxf1 Bxf1 17.Kxf1 fxe5 18.Kf2 Kg6
-/+ (-1.14) Depth: 24/41 00:00:03 4832kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kg8 8.Qb1 Qd4 9.Qc1 Kg7 10.g5 Kh7 11.Qb1 Kg8 12.Qc1 Kg7 13.Qb1 Kh7 14.Qc1 Be2 15.Qb1 Qc5 16.Qe1 Bxf3 17.Kf1 Qc4+ 18.Kg1 Qd4 19.Qd2 Qxe4 20.Rf1 Qg4+ 21.Kf2 Bg2 22.Re1 Bc6 23.Qc3 Qg2+ 24.Ke3 Qxg5+ 25.Kd3 Qg2 26.Qc4 e4+ 27.Ke3 Qg5+ 28.Kd4 Qd2+ 29.Kc5 Qxe1 30.Qxf7+ Kh6 31.Qf4+ Kh5 32.Qe5+ g5 33.Kxc6
-+ (-2.07) Depth: 37/64 00:01:03 98107kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8 7.Qd1 a3 8.Qb1 Qd4 9.Qc1 Kg7 10.Qb1 Be2 11.Qc1 Bxf3 12.Qxa3 Bg2 13.Qc1 Bxe4 14.g5 Bg2 15.a4 Qg4 16.Rxf7+ Kxf7 17.Qc7+ Ke8 18.Qxe5+ Kd7 19.Kf2 Qf3+ 20.Ke1 Kc6 21.Kd2 Qd5+ 22.Qxd5+ Bxd5 23.Ke2 Kc5 24.a5 Kb5 25.Kf2 Be4 26.Kg3 Bf5 27.Kf4 Kxa5 28.Ke5 Kb5 29.Kd4 Bc2 30.Ke5 Kc5 31.Kf6 Kc4
-+ (-2.57) Depth: 42/81 00:03:42 354MN
Peter.
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MikeB
Posts: 4889
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Location: Pen Argyl, Pennsylvania

Re: Interesting tactical position from infinity chess

Post by MikeB »

McBrain-94 on the lowly Pi after 75 seconds:

info depth 34 seldepth 68 multipv 1 score cp 184 nodes 81471534 nps 1079851 hashfull 984 tbhits 0 time 75447 pv b7b1 a3b1 b8b1 c1b1 f4d2 c3c2 d2e3 c2f2 e6c4 b1d1 a4a3 d1d2 e3b6 d2c1 b6d4 c1b1 d4e3 b1d1 g7h7 d1d2 e3b6 d2c2 b6d4 c2c1 h7g8 g4g5 g8h7 c1b1 h7g7 b1c1 c4e2 c1e1 e2f3 e1d2 d4e4 d2c3 f3g2 f2c2 e4f5 c2c1 f5g5 c1e1 g2d5 c3g3 g5g3 h2g3 d5a2 e1e5 a2e6 e5a5 a3a2 g1h2 g7f6 g3g4 e6d5 h2h3

took 15 seconds to a +150 score
info depth 26 seldepth 51 multipv 1 score cp 150 lowerbound nodes 17598365 nps 1063281 hashfull 535 tbhits 0 time 16551 pv b7b1
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AdminX
Posts: 6340
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Re: Interesting tactical position from infinity chess

Post by AdminX »

It took about 3:30 for Komodo to see it. i7 8550U w/32GB Ram

Code: Select all


CPU0: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU1: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU2: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU3: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU4: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU5: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU6: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
CPU7: GenuineIntel Intel64 Family 6 Model 142 Stepping 10 1992 MHz
GUI: Tablebases with 6 pieces found! [Cache: 1 MB + internal 124.79 MB]
GUI: loading Shredderbase E:\Shredderbases\\all34.tbe
GUI: loading Shredderbase E:\Shredderbases\\all345.tbe
GUI: loading Shredderbase E:\Shredderbases\\all345_fast.tbe
GUI: Shredderbases with 5 pieces found (441 MB)
License is valid
Hash table size is now 16384 meg
Threads now set to 6
Found 510 tablebases (up to 6-man).
Probing tablebases up to 6-man.
Engine: Komodo 12.1.1 64-bit  [N6] (16384 MB)
by Don Dailey, Larry Kaufman, Mark Lefler
  1.00	 0:00 	-0.25 	1...g5 (10) 10
  1.00	 0:00 	-0.31 	1...f6 (131) 131
  1.00	 0:00 	-0.46 	1...Rb4 (213) 213
  1.00	 0:00 	-0.51 	1...Rc7 (1.270) 1270
  1.00	 0:00 	-0.52 	1...Rc8 (2.328) 2328
  2.00	 0:00 	-0.25 	1...Rc8 2.Nb5 (5.073) 5073
  3.00	 0:00 	-0.17 	1...Rc8 2.c5 Rbb8 (6.585) 6585
  4.00	 0:00 	+0.20 	1...Rc8 2.c5 Rbb8 3.c6 (8.521) 4275
  4.00	 0:00 	-0.15 	1...Rb6 2.Rcd3 Rc6 3.c5 (13.099) 6572
  5.00	 0:00 	-0.05--	1...Rb6 2.c5 (16.178) 8117
  5.00	 0:00 	-0.05 	1...Rb6 2.c5 Rc6 3.Qd1 Rb4 (17.631) 5897
  6.00	 0:00 	+0.27--	1...Rb6 2.c5 (21.476) 7183
  6.00	 0:00 	+0.03--	1...Rc8 2.c5 (23.447) 7842
  6.00	 0:00 	-0.03 	1...Rc7 2.c5 Rc6 3.Re2 Qxc1+ 4.Rxc1 f6 (24.665) 8249
  7.00	 0:00 	+0.10--	1...Rc7 2.c5 (27.316) 6850
  7.00	 0:00 	+0.09--	1...Rb6 2.c5 (28.087) 7043
  7.00	 0:00 	-0.30++	1...Rb1 2.Qxb1 (29.206) 7324
  7.00	 0:00 	+0.12--	1...Rb1 2.Nxb1 (30.082) 7544
  7.00	 0:00 	+0.09--	1...Rb6 2.c5 (30.451) 7636
  7.00	 0:00 	+0.29--	1...Rb6 2.c5 (32.831) 8233
  7.00	 0:00 	+0.12 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 (34.254) 6871
  7.00	 0:00 	-0.07++	1...Rc7 2.c5 Rc6 (35.118) 7045
  7.00	 0:00 	+0.17--	1...Rc7 2.c5 (36.406) 7303
  7.00	 0:00 	+0.12--	1...Rb1 (36.842) 7390
  7.00	 0:00 	+0.12 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 (38.139) 7651
  8.00	 0:00 	+0.12 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 (41.391) 8303
  8.00	 0:00 	+0.04++	1...Rc7 2.Rd6 Qxc1+ (43.272) 7231
  8.00	 0:00 	 0.00 	1...Rc7 2.c5 Rc6 3.Kh1 Rb7 4.Kg1 Rb8 (45.349) 7578
  9.00	 0:00 	+0.06--	1...Rc7 2.c5 (51.407) 8590
  9.00	 0:00 	-0.09++	1...Rb6 2.Nb5 (56.101) 8038
  9.00	 0:00 	-0.03--	1...Rb6 2.Re2 (64.085) 7140
  9.00	 0:00 	+0.12--	1...Rb6 2.Re2 (66.111) 7366
  9.00	 0:00 	+0.04 	1...Rc7 2.Rdc2 Qxc1+ 3.Rxc1 Rd8 4.Nb5 Rc5 5.R3c2 f5 6.exf5 (72.432) 7263
 10.00	 0:00 	+0.10--	1...Rc7 2.Rdc2 (79.150) 7215
 10.00	 0:00 	+0.07 	1...Rc7 2.Rdc2 Qxc1+ 3.Rxc1 Rc5 4.Kf2 f5 5.gxf5 gxf5 6.Nb5 fxe4 7.Nd6 exf3 (89.340) 7465
 11.00	 0:00 	+0.13--	1...Rc7 2.Rdc2 (138.537) 6615
 11.00	 0:00 	+0.24--	1...Rc7 2.c5 (156.309) 6814
 11.00	 0:00 	+0.09++	1...Rb2 2.Qxb2 Rxb2 (167.400) 6714
 11.00	 0:00 	-0.09++	1...Rb2 2.Rcd3 f5 (168.874) 6773
 11.00	 0:00 	-0.26++	1...Rb2 2.Rcd3 (175.288) 7030
 11.00	 0:00 	-0.27 	1...Rb2 2.Rxb2 Qxc1+ 3.Rxc1 Rxb2 4.Rc2 Rxc2 5.Nxc2 Bxc4 6.Nb4 f5 7.gxf5 gxf5 (179.850) 6935
 12.00	 0:00 	-0.21--	1...Rb2 2.Rxb2 (193.613) 6933
 12.00	 0:00 	+0.03--	1...Rb2 2.Rxb2 (219.905) 7113
 12.00	 0:00 	+0.15--	1...Rb2 2.Rxb2 (253.094) 6858  TB:20
 12.00	 0:00 	+0.31--	1...Rb2 2.Rxb2 (265.651) 6830  TB:25
 12.00	 0:00 	+0.24 	1...Rb2 2.Rxb2 Qxc1+ 3.Rxc1 Rxb2 4.Rc2 Rxc2 5.Nxc2 Bxc4 6.a3 Kf6 7.Kf2 Bb3 8.Nb4 Bd1 9.Nd5+ Ke6 10.Nc3 Bb3 11.Kg3 Kd6 12.Kxh3 Kc5 (327.145) 6694  TB:32
 13.00	 0:00 	+0.30--	1...Rb2 2.Rxb2 (344.370) 6640  TB:37
 13.00	 0:00 	+0.39--	1...Rb2 2.Rxb2 (370.466) 6633  TB:44
 13.00	 0:00 	+0.26++	1...Rc8 2.c5 Rc6 (385.900) 6558  TB:44
 13.00	 0:00 	+0.14++	1...Rc8 2.c5 Rc6 (415.192) 6404  TB:44
 13.00	 0:00 	+0.22--	1...Rc8 2.c5 (428.017) 6405  TB:44
 13.00	 0:00 	+0.42 	1...Rc8 2.c5 Rc6 3.Re2 Qf6 4.Rec2 Rb8 5.Qf1 Qh4 6.Kh1 f6 7.Rd2 Qh8 8.Nb5 Qh6 (474.024) 6172  TB:44
 13.00	 0:00 	+0.20 	1...Rb4 2.c5 Rd4 3.Rf2 Qxc1+ 4.Rxc1 Rd3 5.Nc4 Bxc4 6.Rxc4 Rd1+ 7.Rf1 Rd2 8.c6 Rg2+ 9.Kh1 Rxa2 10.c7 Rc8 11.Rfc1 (526.760) 6001  TB:44
 14.00	 0:00 	+0.14++	1...Rb4 2.c5 Rd4 (573.996) 5872  TB:44
 14.00	 0:00 	+0.05++	1...Rb4 2.c5 Rd4 (597.065) 5812  TB:44
 14.00	 0:00 	+0.11--	1...Rb4 2.c5 (685.771) 5636  TB:44
 14.00	 0:00 	+0.27--	1...Rb4 2.c5 (718.711) 5629  TB:44
 14.00	 0:00 	+0.16++	1...Rb4 2.c5 Rd4 (790.057) 5578  TB:44
 14.00	 0:00 	+0.03 	1...Rb4 2.c5 Rd4 3.Rxd4 Qxc1+ 4.Rxc1 exd4 5.Rc2 d3 6.Rd2 Rc8 7.Rxd3 Rxc5 8.Kf2 Bxa2 9.Kg3 Bb3 10.Kxh3 Rc1 11.Nb5 Kf6 (827.884) 5608  TB:44
 15.00	 0:00 	-0.03++	1...Rb4 2.c5 Rd4 (998.599) 5721  TB:51
 15.00	 0:00 	-0.12++	1...Rb4 2.c5 Rd4 (1.067.322) 5784  TB:51
 15.00	 0:00 	-0.06--	1...Rb4 2.c5 (1.079.926) 5821  TB:51
 15.00	 0:00 	-0.11 	1...Rb4 2.c5 Rd4 3.Rxd4 Qxc1+ 4.Rxc1 exd4 5.Rc2 d3 6.Rd2 Rc8 7.Kf2 Rxc5 8.Kg3 Rc3 9.Nb5 Rc2 10.Rxd3 Rxa2 11.Rc3 Bd7 12.Na3 Rg2+ 13.Kxh3 Rb2 14.Rc7 Rb3 (1.227.969) 5948  TB:87
 16.00	 0:00 	-0.05--	1...Rb4 2.c5 (1.357.438) 5995  TB:137
 16.00	 0:00 	-0.17++	1...Bxc4 2.Rxc4 Qxf3 (1.527.429) 6077  TB:137
 16.00	 0:00 	-0.25++	1...Bxc4 2.Rxc4 Qxf3 (1.554.593) 6088  TB:137
 16.00	 0:00 	-0.28 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Kf1 Qxe4 5.Rc4 Qh1+ 6.Ke2 Qg2+ 7.Ke1 Qf3 8.Rf2 Qh1+ 9.Rf1 Qxh2 10.Qe3 Kg8 11.Rf3 Qxa2 12.Rxh3 Rb2 13.Rc7 (1.718.877) 6133  TB:137
 17.00	 0:00 	-0.34++	1...Bxc4 2.Rxc4 Qxf3 (1.976.390) 6212  TB:157
 17.00	 0:00 	-0.30--	1...Bxc4 2.Rxc4 (2.059.126) 6218  TB:157
 17.00	 0:00 	-0.31 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Kf2 Rb4 6.Rxh3 Qf4+ 7.Kg2 Rd8 8.Rc2 Qxc1 9.Rxc1 Rb2+ 10.Kg1 Rxa2 11.Nc4 e4 12.Re3 Rd4 (2.374.491) 6298  TB:158
 18.00	 0:00 	-0.37++	1...Bxc4 2.Rxc4 Qxf3 (3.225.086) 6480  TB:199
 18.00	 0:00 	-0.45++	1...Bxc4 2.Rxc4 Qxf3 (3.317.704) 6484  TB:200
 18.00	 0:00 	-0.56++	1...Bxc4 2.Rxc4 Qxf3 (3.361.780) 6494  TB:200
 18.00	 0:00 	-0.62 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Rxh3 Qg4+ 7.Rg3 Qd4+ 8.Kh1 Rxc2 9.Nxc2 Qd5+ 10.Kg1 Qxa2 11.Na3 Rb3 12.Re3 Rb2 13.Rh3 Rg2+ 14.Kh1 Qd5 (3.766.898) 6557  TB:225
 19.00	 0:00 	-0.68++	1...Bxc4 2.Rxc4 Qxf3 (4.357.447) 6629  TB:265
 19.00	 0:00 	-0.76++	1...Bxc4 2.Rxc4 Qxf3 (4.632.900) 6674  TB:352
 19.00	 0:00 	-0.87++	1...Bxc4 2.Rxc4 Qxf3 (4.797.007) 6698  TB:415
 19.00	 0:00 	-0.80--	1...Bxc4 2.Rxc4 (5.141.908) 6748  TB:519
 19.00	 0:00 	-0.59--	1...Bxc4 2.Rxc4 (5.351.300) 6766  TB:588
 19.00	 0:00 	-0.55 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Rxc2 7.Qxe4 Rc1+ 8.Kf2 Rb2+ 9.Qe2 Rxe2+ 10.Kxe2 Ra1 11.Rxh3 Rxa2+ 12.Ke1 f5 13.Nb5 e4 14.Nc3 Ra1+ (6.379.999) 6834  TB:1.555
 20.00	 0:01 	-0.49--	1...Bxc4 2.Rxc4 (7.865.053) 6960  TB:2.315
 20.00	 0:01 	-0.52 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb2 10.Ne1 Rxa2 11.Rf3 Qd6 12.Rxh3 Qd4 13.Kf1 Qxe3 14.Rxe3 a3 (9.431.074) 7131  TB:2.634
 21.00	 0:01 	-0.46--	1...Bxc4 2.Rxc4 (10.702.712) 7270  TB:2.901
 21.00	 0:01 	-0.38--	1...Bxc4 2.Rxc4 (11.757.599) 7363  TB:2.992
 21.00	 0:01 	-0.36 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb2 10.Ne1 Rxa2 11.Rxh3 Qf4 12.Qxf4 exf4 13.Rc3 Kf6 14.Rc7 Re2 (14.872.327) 7531  TB:4.105
 22.00	 0:02 	-0.42++	1...Bxc4 2.Rxc4 Qxf3 (20.248.930) 7746  TB:5.616
 22.00	 0:02 	-0.38--	1...Bxc4 2.Rxc4 (20.276.178) 7744  TB:5.616
 22.00	 0:02 	-0.34 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb1+ 10.Ne1 Qf5 11.Qe2 f6 12.Rc3 e4 13.Qf2 Qd7 14.Rg3 g5 (21.431.558) 7783  TB:5.791
 23.00	 0:03 	-0.40++	1...Bxc4 2.Rxc4 Qxf3 (29.909.681) 8063  TB:8.656
 23.01	 0:03 	-0.48++	1...Bxc4 2.Rxc4 Qxf3 (31.200.137) 8087  TB:9.919
 23.01	 0:04 	-0.43--	1...Bxc4 2.Rxc4 (35.147.812) 8167  TB:13.064
 23.01	 0:05 	-0.35 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb1+ 10.Ne1 Qf5 11.Qe2 f6 12.Rc3 Ra1 13.Rc7+ Kh6 14.Rc4 Qb1 (43.273.301) 8259  TB:17.998
 24.01	 0:06 	-0.29--	1...Bxc4 2.Rxc4 (53.470.369) 8334  TB:28.591
 24.01	 0:06 	-0.33++	1...Bxc4 2.Rxc4 Qxf3 (55.747.796) 8354  TB:32.330
 24.01	 0:06 	-0.28--	1...Bxc4 2.Rxc4 (56.695.403) 8369  TB:32.855
 24.01	 0:07 	-0.30 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb2 10.Ne1 Rxa2 11.Rxh3 Ra1 12.Kg2 Qf4 13.Qxf4 exf4 14.Nd3 Ra3 (64.000.955) 8428  TB:39.958
 25.01	 0:09 	-0.36++	1...Bxc4 2.Rxc4 Qxf3 (84.223.767) 8458  TB:70.097
 25.01	 0:10 	-0.32--	1...Bxc4 2.Rxc4 (86.284.827) 8464  TB:70.937
 25.01	 0:10 	-0.28 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Qf5 10.Ne1 Rb1 11.Qe2 e4 12.Qd2 f6 13.Qe2 Ra1 14.Re3 Qg5+ (89.752.887) 8479  TB:72.736
 26.01	 0:13 	-0.22--	1...Bxc4 2.Rxc4 (119.406.004) 8554  TB:134.007
 26.01	 0:14 	-0.26++	1...Bxc4 2.Rxc4 Qxf3 (124.564.051) 8572  TB:138.505
 26.01	 0:16 	-0.34 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb2 10.Ne1 Rxa2 11.Rxh3 Ra1 12.Qh6+ Kg8 13.Qh7+ Kf8 14.Qh6+ Ke7 (141.059.504) 8542  TB:153.290
 27.01	 0:21 	-0.38 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb1+ 10.Ne1 Qf5 11.Qe2 e4 12.Qd2 f6 13.Re3 Qg4+ 14.Rg3 Qd1 (185.119.114) 8496  TB:208.010
 28.01	 0:28 	-0.32--	1...Bxc4 2.Rxc4 (239.100.364) 8389  TB:296.998
 28.01	 0:29 	-0.24--	1...Bxc4 2.Rxc4 (245.207.666) 8361  TB:306.192
 28.01	 0:30 	-0.29++	1...Bxc4 2.Rxc4 Qxf3 (253.253.304) 8340  TB:316.789
 28.01	 0:30 	-0.22--	1...Bxc4 2.Rxc4 (257.213.446) 8327  TB:323.060
 28.01	 0:51 	-0.31 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qf5 7.Rg5 Qf6 8.Rg3 Rxc2 9.Nxc2 Rb1+ 10.Ne1 Qf5 11.Qe2 f6 12.Rc3 g5 13.Rc7+ Kg6 14.a3 Ra1 (403.640.863) 7763  TB:476.749
 28.18	 0:53 	-0.32++	1...f5 2.Rd6 Qxc1+ (414.552.492) 7741  TB:483.562
 28.01	 1:06 	-0.18--	1...f5 2.exf5 (501.378.704) 7560  TB:572.084
 28.02	 1:16 	-0.27 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rd7 6.Qe3 Qf5 7.Qf3 Qe6 8.Rxh3 Rb4 9.Rg3 Rbd4 10.Rc1 Qxa2 11.Re1 Rd3 12.Qxd3 Rxd3 13.Rxd3 f5 14.Rc1 f4 (570.504.906) 7476  TB:638.688
 29.01	 1:21 	-0.33++	1...Bxc4 2.Rxc4 Qxf3 (609.540.696) 7435  TB:684.693
 29.01	 1:24 	-0.41++	1...Bxc4 2.Rxc4 Qxf3 (624.688.725) 7425  TB:693.504
 29.01	 1:27 	-0.52++	1...Bxc4 2.Rxc4 Qxf3 (647.943.832) 7400  TB:709.033
 29.01	 1:29 	-0.48 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rd7 6.Qe3 Qf5 7.Qf3 Qe6 8.Rxh3 Rb4 9.Rg3 Rbd4 10.Rc1 Qxa2 11.Qf1 Qe6 12.Nc2 Rg4 13.Qe2 Rxg3+ 14.hxg3 e4 (659.969.777) 7384  TB:718.479
 30.01	 1:37 	-0.42--	1...Bxc4 2.Rxc4 (715.739.350) 7312  TB:762.818
 30.01	 1:39 	-0.34--	1...Bxc4 2.Rxc4 (729.356.282) 7313  TB:774.582
 30.01	 1:54 	-0.23--	1...Bxc4 2.Rxc4 (820.929.694) 7193  TB:914.656
 30.01	 2:18 	-0.30++	1...Bxc4 2.Rxc4 Qxf3 (963.920.727) 6966  TB:1.117.242
 30.01	 2:19 	-0.22 	1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qxe3+ 7.Rxe3 Rxc2 8.Nxc2 Rb2 9.Ne1 Rxa2 10.Rxe5 a3 11.Ra5 Kh6 12.Kf1 g5 13.Nd3 g4 14.Nf2 Ra1+ (970.781.919) 6956  TB:1.127.470
 30.02	 3:05 	-0.51++	1...f5 2.exf5 gxf5 (1.192.329.888) 6444  TB:1.436.981
 30.01	 3:12 	-0.37--	1...f5 2.exf5 (1.225.261.174) 6370  TB:1.520.870
 30.01	 3:23 	-0.24 	1...f5 2.exf5 gxf5 3.Nb5 fxg4 4.fxg4 Bxg4 5.Rd5 Qe4 6.Rg3 Kh7 7.Qf1 Rg7 8.Qd3 Qxd3 9.Rdxd3 Be6 10.Rde3 Bxc4 11.Rxg7+ Kxg7 12.Nc3 Rb2 13.Rxh3 a3 14.Rg3+ Kh6 (1.281.540.418) 6306  TB:1.578.031
 30.03	 3:25 	-0.57++	1...Rb1 2.Nxb1 Rxb1 (1.294.504.421) 6295  TB:1.600.122
 30.01	 3:28 	-0.29--	1...Rb1 2.Nxb1 (1.311.227.732) 6283  TB:1.627.167
 30.01	 3:33 	-0.68++	1...Rb1 2.Nxb1 Rxb1 (1.335.621.116) 6248  TB:1.673.018
 30.01	 3:34 	-1.38 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.Qe1 Bxa2 7.Qd2 Bb3 8.Qxd4 exd4 9.Rb2 Kf6 10.Kf2 Ke5 11.Ke1 Kf4 12.Kd2 Kxf3 13.Kd3 Kxg4 14.Rf2 a3 (1.340.430.569) 6237  TB:1.690.206
 31.01	 3:36 	-1.32--	1...Rb1 2.Nxb1 (1.351.459.608) 6233  TB:1.705.837
 31.01	 3:39 	-1.24--	1...Rb1 2.Nxb1 (1.365.036.024) 6229  TB:1.723.612
 31.01	 3:42 	-1.29++	1...Rb1 2.Nxb1 Rxb1 (1.385.942.835) 6217  TB:1.759.562
 31.01	 3:43 	-1.44++	1...Rb1 2.Nxb1 Rxb1 (1.388.145.419) 6216  TB:1.764.568
 31.01	 3:45 	-1.65++	1...Rb1 2.Nxb1 Rxb1 (1.397.955.262) 6211  TB:1.789.481
 31.01	 3:48 	-1.51--	1...Rb1 2.Nxb1 (1.411.569.322) 6190  TB:1.827.588
 31.01	 3:48 	-1.11--	1...Rb1 2.Nxb1 (1.414.509.319) 6190  TB:1.830.745
 31.01	 3:49 	-1.39++	1...Rb1 2.Nxb1 Rxb1 (1.420.098.104) 6178  TB:1.841.848
 31.01	 3:53 	-1.79 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.Qe1 Bxa2 7.Qd2 Bb3 8.Qxd4 exd4 9.Rb2 Kf6 10.Kf2 Ke5 11.Ke1 Kf4 12.Kd2 Kxf3 13.Kd3 Kxg4 14.Rf2 a3 (1.437.227.884) 6157  TB:1.910.214
 32.01	 4:04 	-1.84 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.Qe1 Bxa2 7.Qd2 Bb3 8.Qxd4 exd4 9.Rb2 Kf6 10.Kf2 Ke5 11.Ke1 Kf4 12.Kd2 Kxf3 13.Kd3 Kxg4 14.Rf2 a3 (1.495.829.495) 6120  TB:1.989.467
 33.01	 4:12 	-1.78--	1...Rb1 2.Nxb1 (1.537.511.560) 6085  TB:2.030.062
 33.01	 4:18 	-1.70--	1...Rb1 2.Nxb1 (1.566.241.075) 6067  TB:2.067.124
 33.01	 4:26 	-1.67 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.a3 Be2 7.Qc1 Bxf3 8.Qc6 Qd1+ 9.Rf1 Qd2 10.Rf2 Qe1+ 11.Rf1 Qe2 12.Rf2 Qe3 13.Qd5 Qc1+ 14.Rf1 Qf4 (1.609.359.725) 6040  TB:2.148.952
 34.01	 5:03 	-1.61--	1...Rb1 2.Nxb1 (1.819.764.689) 5996  TB:2.840.971
 34.01	 5:11 	-1.65++	1...Rb1 2.Nxb1 Rxb1 (1.867.509.459) 5996  TB:3.055.145
 34.01	 5:13 	-1.76++	1...Rb1 2.Nxb1 Rxb1 (1.879.231.246) 5996  TB:3.158.231
 34.01	 5:17 	-1.69--	1...Rb1 2.Nxb1 (1.901.717.382) 5988  TB:3.241.232
 34.01	 5:40 	-1.79++	1...Rb1 2.Nxb1 Rxb1 (2.014.146.191) 5919  TB:3.732.925
 34.01	 6:01 	-1.96 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.f4 a3 7.fxe5 Qxe5 8.Qe1 Qd4 9.Qb1 Be2 10.Qe1 Bd3 11.Qc1 Kg8 12.g5 Bc4 13.Qb1 Be2 14.Qe1 Bb5 (2.132.384.701) 5906  TB:4.114.105
 35.01	 6:08 	-1.90--	1...Rb1 2.Nxb1 (2.180.693.495) 5909  TB:4.235.640
 35.01	 6:10 	-1.94++	1...Rb1 2.Nxb1 Rxb1 (2.190.630.650) 5904  TB:4.253.650
 35.01	 6:15 	-2.05++	1...Rb1 2.Nxb1 Rxb1 (2.215.169.315) 5901  TB:4.326.297
 35.01	 6:21 	-2.17 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.Qc1 Bxa2 7.Qd2 Bb3 8.Qb2 Kf6 9.Qxd4 exd4 10.Rb2 Ke6 11.Kf2 Ke5 12.Ke1 Kf4 13.Kd2 Kxf3 14.Kd3 Kxg4 (2.249.284.255) 5900  TB:4.449.432
 36.01	 6:27 	-2.11--	1...Rb1 2.Nxb1 (2.286.633.713) 5904  TB:4.550.767
 36.01	 6:29 	-2.03--	1...Rb1 2.Nxb1 (2.301.253.335) 5907  TB:4.556.210
 36.01	 6:31 	-1.92--	1...Rb1 2.Nxb1 (2.316.335.203) 5909  TB:4.561.486
 36.01	 6:33 	-1.77--	1...Rb1 2.Nxb1 (2.328.884.267) 5911  TB:4.582.545
 36.01	 6:37 	-1.56--	1...Rb1 2.Nxb1 (2.348.064.142) 5910  TB:4.674.805
 36.01	 6:40 	-1.27--	1...Rb1 2.Nxb1 (2.366.156.051) 5911  TB:4.703.034
 36.01	 6:44 	-0.87--	1...Rb1 2.Nxb1 (2.389.739.890) 5914  TB:4.718.054
 36.01	 7:02 	-1.15++	1...Rb1 2.Nxb1 Rxb1 (2.492.301.446) 5905  TB:5.090.188
 36.01	 7:08 	-0.76--	1...Rb1 2.Nxb1 (2.532.467.779) 5904  TB:5.210.736
 36.01	 7:34 	-1.30++	1...Rb1 2.Nxb1 Rxb1 (2.684.979.151) 5906  TB:5.693.062
 36.01	 7:45 	-2.38 	1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qd4+ 5.Rf2 Bxc4 6.Qc1 Bxa2 7.Qd2 Bb3 8.Qb2 Kf6 9.Qxd4 exd4 10.Rb2 Ke6 11.Kf2 Ke5 12.Ke1 Kf4 13.Kd2 Kxf3 14.Kd3 Kxg4 (2.751.419.954) 5908  TB:5.899.877
 37.01	 8:21 	-2.32--	1...Rb1 2.Nxb1 (2.975.268.971) 5933  TB:7.827.638
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
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User avatar
Eelco de Groot
Posts: 4565
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: Interesting tactical position from infinity chess

Post by Eelco de Groot »

peter wrote: ↑Sun Jun 24, 2018 8:16 am Hi Eelco!
Eelco de Groot wrote: ↑Sun Jun 24, 2018 4:47 am It does not go very fast with just one thread, but I'm sure with big machines you can get a higher score.


1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

Engine: Kaissa 040 (i7 6700, one thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
..
43/42 106:43 -3.15 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qb1 a3 8.Qd1 Kg8 9.Qa1 Qb6 10.g5 Qe3
11.Qd1 Kg7 12.Qd2 Qb6 13.Qc2 Qd4
14.Qb1 Kg8 (18.733.265.382) 2925[/color]
24 threads, 32G hash:

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - - 0 1

Analysis by CorChess 2.4 180618 64 POPCNT:

1...Rc7 2.c5 f6 3.c6 Rbc8 4.Rd6 Qxc1+ 5.Rxc1
= (0.20) Depth: 7/8 00:00:00 60kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.Qd1 a3 8.g5 Qb6 9.Qa1 Be2 10.Qe1 Bxf3 11.Kf1 Bg2+ 12.Ke2 Qb2+ 13.Qd2
-/+ (-0.79) Depth: 17/25 00:00:00 2009kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kg8 8.Qd1 Qb6 9.Qa1 Kh7 10.Qc1 Qd4 11.Qb1 Kg8 12.Qc1 Kg7 13.g5 Be2 14.Qe1 Bxf3 15.Qd2 Qxe4 16.Qc3 Bg2 17.Rc2 Qf5 18.Rc1 Bf3 19.Re1 Qxg5+ 20.Kf2 Qg2+ 21.Ke3 Bh5 22.Qxe5+ Kh7 23.Kd3 Qxa2 24.Qd4 Qb3+ 25.Qc3 Qb8 26.Qe5 Qb4 27.Qc3 Qf4 28.Qd4 Qf3+ 29.Qe3 Qg2 30.Qd2 Bg4 31.Qxg2 hxg2 32.Ke3 Be6 33.Kf3
-+ (-2.57) Depth: 36/77 00:00:18 410MN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8 7.Qb1 a3 8.Qd1 Kh7 9.Qd2 Qb6 10.Qe1 Bxa2 11.Qf1 Kg7 12.Qxh3 Bc4 13.Kg2 Qxf2+ 14.Kxf2 a2 15.Qg2 a1Q 16.h4 Qb2+ 17.Kg3 Qc1 18.Qf2 Bf1 19.Kh2 Qd1 20.Kg1 Be2+ 21.Kg2 Qd2 22.Kh2 Qf4+ 23.Kg2 Bd1 24.Qf1 Qd2+ 25.Qf2 Qd4 26.Qf1 Kg8 27.Qf2 Qd3 28.Kg3
-+ (-2.98) Depth: 38/83 00:00:48 1123MN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kh7 8.Qd1 Qc5 9.Qd2 Qb6 10.Qc2 Qd4 11.Qb1 Be2 12.Qc1 Bxf3 13.Qxa3 Bg2 14.Qc1 Bxe4 15.Kf1 Bd3+ 16.Ke1 Qb4+ 17.Qd2 Qe4+ 18.Kd1 Qxg4+ 19.Kc1 Qd4 20.Qb2 Qc5+ 21.Kd1 f5 22.Qb7+ Kh6 23.Qf3 Qd4 24.Qxh3+ Kg7 25.Qg3 f4 26.Qh4 Be4+ 27.Ke1 Qa1+ 28.Ke2 Qxa2+ 29.Ke1 Qb1+ 30.Kd2 Qb4+ 31.Kc1 Qa3+ 32.Kd2 Qe3+ 33.Kd1 Bf3+ 34.Rxf3 Qxf3+ 35.Ke1 Qe4+ 36.Kf1 Qd3+ 37.Kg2 Qd5+ 38.Kf2 Qd4+ 39.Kf1 Qd6 40.Qe1 Qd3+ 41.Kf2 Kf6 42.Qc1 Kg5
-+ (-4.16) Depth: 47/102 00:06:02 8664MN

Because the position isn't very hard, single thread could be yet used well too for better reproducibility.
Here is CoreChess again started with empty hash on 1 switched on HT- thread, so not even with full 1 core- power of the same 2.9- GHz Intel CPU:

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - - 0 1

Analysis by CorChess 2.4 180618 64 POPCNT:

1...Rc8 2.Rf2 Qxc1+ 3.Rxc1 f5 4.exf5 gxf5 5.gxf5
= (-0.04) Depth: 7/8 00:00:00 3kN
...
1...Bxc4 2.Rxc4 Qxf3 3.Rc3 Qxg4+ 4.Rg3 Qxe4 5.Rc2 Rb2 6.Qe3 Qxe3+ 7.Rxe3 Rxc2 8.Nxc2 Rb2 9.Ne1 Rxa2 10.Rxe5 a3 11.Re3 f5 12.Rxh3 g5 13.Rb3 Re2 14.Rxa3 Rxe1+ 15.Kf2 Re4 16.Kg3 Rh4 17.Ra5
-/+ (-0.89) Depth: 22/42 00:00:02 3265kN
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4 7.Qb2+ f6 8.Qd2 Qb6 9.Qxf4 a3 10.e5 Qb1+ 11.Rf1 Qxf1+ 12.Qxf1 Bxf1 13.exf6+ Kxf6 14.Kxf1 Kg5 15.Kf2 Kxg4 16.Ke3 Kg5 17.Kf3 Kh4 18.Kf2
-/+ (-0.99) Depth: 23/43 00:00:03 4517kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4 7.Qb2+ f6 8.Qd2 Qb6 9.Qxf4 g5 10.Qc1 Qd4 11.Qb1 Be2 12.a3 Kg6 13.e5+ Kh6 14.Qf5 Qa1+ 15.Rf1 Qxf1+ 16.Qxf1 Bxf1 17.Kxf1 fxe5 18.Kf2 Kg6
-/+ (-1.14) Depth: 24/41 00:00:03 4832kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.Qa1 Kg8 8.Qb1 Qd4 9.Qc1 Kg7 10.g5 Kh7 11.Qb1 Kg8 12.Qc1 Kg7 13.Qb1 Kh7 14.Qc1 Be2 15.Qb1 Qc5 16.Qe1 Bxf3 17.Kf1 Qc4+ 18.Kg1 Qd4 19.Qd2 Qxe4 20.Rf1 Qg4+ 21.Kf2 Bg2 22.Re1 Bc6 23.Qc3 Qg2+ 24.Ke3 Qxg5+ 25.Kd3 Qg2 26.Qc4 e4+ 27.Ke3 Qg5+ 28.Kd4 Qd2+ 29.Kc5 Qxe1 30.Qxf7+ Kh6 31.Qf4+ Kh5 32.Qe5+ g5 33.Kxc6
-+ (-2.07) Depth: 37/64 00:01:03 98107kN
...
1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kg8 7.Qd1 a3 8.Qb1 Qd4 9.Qc1 Kg7 10.Qb1 Be2 11.Qc1 Bxf3 12.Qxa3 Bg2 13.Qc1 Bxe4 14.g5 Bg2 15.a4 Qg4 16.Rxf7+ Kxf7 17.Qc7+ Ke8 18.Qxe5+ Kd7 19.Kf2 Qf3+ 20.Ke1 Kc6 21.Kd2 Qd5+ 22.Qxd5+ Bxd5 23.Ke2 Kc5 24.a5 Kb5 25.Kf2 Be4 26.Kg3 Bf5 27.Kf4 Kxa5 28.Ke5 Kb5 29.Kd4 Bc2 30.Ke5 Kc5 31.Kf6 Kc4
-+ (-2.57) Depth: 42/81 00:03:42 354MN
Hi Peter!

I let the computer run a few days, but could not easily get a +4 score like CorChess. That does not have to mean anything because it could have an evaluation that scales differently than Stock, but still lead to the same positions. And Kaissa is not the same here as Stockfish. I agree the key move was easy but the further progress I guess is not, or I would have found it...

Old Kaissa (Kaissa I) is unreliable where King Safety in the endgame is concerned, but did get the highest scores.

1r6/1r3pk1/4b1p1/4p3/p1P1PqP1/N1R2P1p/P2R3P/2Q3K1 b - -

Engine: Kaissa (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

20/45 0:01 -1.40 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qd1 a3 7.g5 Qb6
8.Qa1 Kg8 9.Qe1 Bxa2 10.Qc1 Qa7
11.Qc8+ Kg7 12.Qc3 Kh7 13.f4 Be6
14.f5 a2 (3.306.735) 2088

21/45 0:02 -1.82 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4
7.Qb2+ f6 8.Qd2 Qb6 9.Qb2 Qc5 10.Qc3 a3
11.g5 Qxg5+ 12.Kh1 Qb5 13.Qxh3 Bd3
14.Rxf4 Qb1+ (5.570.171) 2119

22/51 0:03 -2.08++ 1...Rb1 (7.688.235) 2190

22/51 0:03 -1.74-- 1...Rb1 2.Nxb1 (8.375.076) 2223

22/51 0:03 -1.99++ 1...Rb1 (8.379.924) 2223

22/52 0:03 -1.74 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.f4 exf4
7.Qb2+ f6 8.Qd2 Qb6 9.Qb2 Qc5 10.Qc3 a3
11.g5 Qxg5+ 12.Kh1 Qb5 13.Qxh3 Bd3
14.Rxf4 Qb1+ (8.919.278) 2242
.
.
.
57/114 3247:40-4.45 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qb1 a3 8.Qd1 Kg7 9.Qa1 Kf8 10.Qb1 Kg8
11.Qa1 Qb6 12.Qc1 Qd4 13.Qb1 Kg7
14.Qc1 Kh7 (519.847.441.228) 2667

58/94 3528:29-4.38-- 1...Rb1 2.Nxb1 (568.714.804.470) 2686

58/97 3531:44-4.45++ 1...Rb1 (569.258.870.675) 2686

58/97 3921:47-4.30-- 1...Rb1 2.Nxb1 (631.821.705.281) 2685

58/97 3925:58-4.43++ 1...Rb1 (632.446.286.425) 2684



Kaissa 040 is the most recent Kaissa and I give a few lines:

44/48 240:26 -3.30 1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2
4.Rc2 Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7
7.Qb1 a3 8.Qd1 Qc5 9.Qb1 Qd4 10.g5 Kg7
11.Qc1 Kg8 12.Qe1 Bxa2 13.Kh1 Bc4
14.Rd2 Qb6 (39.962.887.972) 2770

45/37 789:50 -3.22-- 1...Rb1 2.Nxb1 (125.739.071.357) 265

Then entering the first moves that seem reliable:

1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2

Image

8/5pk1/4b1p1/4p3/p1P1P1P1/5P1p/P1Rq3P/1Q4K1 b - -

Engine: Kaissa III 040 (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
.
.
.
57/67 373:13 -3.59 4...Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.Qb1 a3
8.Qa1 Qb6 9.g5 Qa7 10.Qb1 Qd4 11.Qc1 Be2
12.Qb1 Qc5 13.Qe1 Bxf3 14.Kf1 Qc4+
15.Kg1 Qd4 16.Qd2 Qxe4 17.Qc3 Qg4+ (57.621.617.904) 2573

58/63 444:24 -3.58 4...Qe3+ 5.Rf2 Bxc4 6.Qa1 Kh7 7.Qb1 a3
8.Qa1 Qb6 9.g5 Qa7 10.Qb1 Kh8 11.Qc2 Qd4
12.Qc1 Kg7 13.Qb1 Kh7 14.Qc1 Be2
15.Qb1 Qc5 16.Qe1 Bxf3 17.Kf1 Qc4+ (68.755.589.814) 2578



1...Rb1 2.Nxb1 Rxb1 3.Qxb1 Qxd2 4.Rc2 Qe3+ 5.Rf2 Bxc4

Image

8/5pk1/6p1/4p3/p1b1P1P1/4qP1p/P4R1P/1Q4K1 w - -

Engine: Kaissa III (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
.
.
.
56/66 458:52 -3.66 6.Qd1 a3 7.Qb1 Qd4 8.Qc1 Kg8 9.Qb1 Be2
10.g5 Bc4 11.Qb8+ Kg7 12.Qb1 Kh8
13.Qb8+ Kh7 14.Qb1 Be2 15.Qe1 Bxf3
16.Qd2 Qxe4 17.Qc3 Qg4+ 18.Kf1 Bd5
19.Ke1 (73.159.854.394) 2657

57/58 578:05 -3.66 6.Qd1 a3 7.Qb1 Qd4 8.Qc1 Kg8 9.Qb1 Kh7
10.Qc1 Kh8 11.Qh6+ Kg8 12.Qc1 Kh7
13.Qb1 Kh8 14.Qc1 Kg7 15.g5 Kg8
16.Qb1 Kf8 17.Qb8+ Kg7 18.Qb1 Kh7
19.Qc1 (92.272.473.985) 2660

if 6. Qa1 which was the original movechoice of Kaissa in the PV instead of 6. Qd1:

Image

8/5pk1/6p1/4p3/p1b1P1P1/4qP1p/P4R1P/Q5K1 b - -

Engine: Kaissa III 040 (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
.
.
.
57/54 369:52 -3.74 6...Kh7 7.Qb1 a3 8.Qd1 Kg7 9.Qa1 Kg8
10.Qd1 Kh7 11.g5 Kg7 12.Qd2 Qb6
13.Qc1 Qd4 14.Qb1 Be2 15.Qc1 Kh7
16.Qb1 Qc5 17.Qe1 Bxf3 18.Kf1 Qc4+
19.Kg1 Qd4 (56.355.506.109) 2539

58/54 433:28 -3.74 6...Kh7 7.Qb1 a3 8.Qd1 Kg7 9.Qa1 Kg8
10.Qd1 Kh7 11.g5 Kg7 12.Qd2 Qb6
13.Qc1 Qd4 14.Qb1 Be2 15.Qc1 Kh7
16.Qe1 Bxf3 17.Qd2 Qxe4 18.Qc3 Qg4+
19.Kf1 Bd5 (66.600.538.827) 2560

So, for both 6. Qd1 and 6. Qa1, Kaissa, playing Black, would still not have a +4 score... :?
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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