Naum 4:
New game
8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - - 0 1
Analysis by Naum 4 64 bit:
1.Be4 Nxc2 2.Bxf3 Nb4 3.Bb7 Nd3
+/= (0.56) Depth: 6/11 00:00:00 1kN
1.Kc7 Kd2 2.Kb7 Ke2 3.Kxa7 Kxf2
+/- (1.23) Depth: 6/11 00:00:00 3kN
1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Nb5 4.c4
+/- (0.89) Depth: 7/10 00:00:00 4kN
1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Nb5 4.c4 Kxf2
+/- (1.16) Depth: 8/11 00:00:00 5kN
1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Nb3 4.Bc2 Nc5+ 5.Kxa7
+/- (0.77) Depth: 9/13 00:00:00 10kN
1.Be4 Kd2 2.Kd6 Kc3 3.Ke5 Kc4 4.Bd5+ Kc5 5.c3
+/- (0.96) Depth: 9/15 00:00:00 16kN
1.Be4 Kd2 2.Kd6 Kc3 3.Ke5 Kc4 4.Kf4 Kb5 5.Ke3 Kc5
+/- (0.96) Depth: 10/16 00:00:00 19kN
1.Be4 Kd2 2.Kd6 Kc3 3.Ke5 Kc4 4.Bd5+ Kc5 5.c3 Ne2
+/- (0.97) Depth: 11/17 00:00:00 29kN
1.Be4 Kd2 2.Kd6 Kc3 3.Ke5 Kc4 4.Kf4 Kb5 5.Ke3 Kc4 6.Bxf3 Nxc2+
+/- (0.96) Depth: 12/17 00:00:00 39kN
1.Kc7 Nb5+ 2.Kc6 Kb4 3.Kb7 Kc5 4.Bd3 Nd4 5.Kxa7 Kc6 6.Be4+ Kd7
+- (3.08) Depth: 12/34 00:00:00 330kN, tb=116
1.Kc7 Nxc2 2.Be4 Nb4 3.Kb7 Kd2 4.Bxf3 Ke1 5.Be2 Kxf2 6.Bb5 Ke3 7.Bc4
= (0.03) Depth: 13/25 00:00:00 433kN, tb=941
1.Be4 Nxc2 2.Bxf3 Ne1 3.Bb7 Kd4 4.Kc7 Nd3 5.f3 Kc5 6.Be4 Nf2 7.Bf5
+/- (0.77) Depth: 13/31 00:00:00 544kN, tb=1136
1.Be4 Nxc2 2.Bxf3 Nb4 3.Bb7 Nd3 4.f3 Kc4 5.Kc7 Kb5 6.Bc8 Nc5 7.Kd6 Kc4
+/- (0.80) Depth: 14/24 00:00:00 701kN, tb=1504
1.Be4 Nxc2 2.Bxf3 Nb4 3.Bb7 Nd3 4.f3 Kc4 5.Kc7 Kb5 6.Bc8 Nc5 7.Kd6 Kc4 8.f4
+/- (0.80) Depth: 15/18 00:00:00 752kN, tb=1803
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Be4 Kc3 5.Bxf3 Nxc2 6.Ke4 Kd2 7.Bg4 Nb4 8.Bc8
+/- (0.99) Depth: 15/27 00:00:00 897kN, tb=2142
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Be4 Kc3 5.Bxf3 Nxc2 6.Ke4 Kd2 7.Bg4 Nb4 8.Bc8 Nd3
+/- (1.02) Depth: 16/24 00:00:00 1006kN, tb=2184
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Bd3 Kc3 5.Ke3 Ne6 6.Kxf3 Kd4 7.Kg4 Ke5 8.f3 Nf4 9.Be4
+- (1.64) Depth: 17/33 00:00:00 1604kN, tb=2911
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Bd3 Kc3 5.Ke3 Ne6 6.Kxf3 Kd4 7.Kg4 Ke5 8.f3 Nf4 9.Be4 Ne6
+- (1.64) Depth: 18/33 00:00:01 1899kN, tb=3510
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Bd3 Kc3 5.Ke3 Ne6 6.Kxf3 Kd4 7.Kg4 Ke5 8.Bb5 Nf4 9.Bc6 Ne6 10.f3
+- (1.62) Depth: 19/31 00:00:01 2379kN, tb=4437
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Bd3 Kc3 5.Ke3 Ne6 6.Kxf3 Kd4 7.Kg4 Ke5 8.f3 Nf4 9.Bc4 Ng2 10.Kg5 Kd4
+- (1.69) Depth: 20/31 00:00:01 3325kN, tb=6166
1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Nd4 4.Bd3 Kc3 5.Ke3 Ne6 6.Kxf3 Kd4 7.Kg4 Ke5 8.f3 Nf4 9.Bc4 Ng2 10.Kg5 Kd4 11.Bd3
+- (1.71) Depth: 21/34 00:00:02 4848kN, tb=8552
1.Kd6 Kb4 2.Kc7 Kc5 3.Kb7 Kd6 4.Be4 Kd7 5.Kxa7 Kc7 6.c4 Ne2 7.Bxf3 Nf4 8.Bd5 Nh3 9.f3 Nf4 10.Be4 Ne6 11.Bb7 Nf4
+- (3.63) Depth: 22/42 00:00:14 29584kN, tb=66153
1.Kd6 Kb4 2.Kc7 Kc5 3.Kb7 Kd6 4.Be4 Kd7 5.Kxa7 Kc7 6.c4 Ne2 7.Bxf3 Nf4 8.Bd5 Nh3 9.f3 Nf4 10.Be4 Ne6 11.Bb7 Nf4 12.Bd5
+- (3.63) Depth: 23/42 00:00:17 33824kN, tb=85234
1.Kd6 Kb4 2.Kc7 Kc5 3.Kb7 Kd6 4.Be4 Kd7 5.Kxa7 Kc7 6.c4 Ne2 7.Bxf3 Nf4 8.Bd5 Nh3 9.f3 Nf4 10.Be4 Ne6 11.Bb7 Nf4 12.Bd5 Nd3
+- (3.63) Depth: 24/43 00:00:19 37916kN, tb=93153
1.Kd6 Kb4 2.Kc7 Kc5 3.Kb7 Kd6 4.Be4 Kd7 5.Kxa7 Kc7 6.c4 Ne2 7.Bxf3 Nf4 8.Bd5 Nh3 9.f3 Nf4 10.Be4 Ne6 11.Bb7 Nf4 12.Bd5 Nd3 13.Be6
+- (3.63) Depth: 25/43 00:00:26 45846kN, tb=126814
1.Kd6 Kb4 2.Kc7 Kc5 3.Kb7 Kd6 4.Be4 Kd7 5.Kxa7 Kc7 6.c4 Ne2 7.Bxf3 Nf4 8.Bd5 Nh3 9.f3 Nf4 10.Be4 Ne6 11.Bb7 Nf4 12.Bd5 Nd3 13.Be6 Nc5
+- (3.63) Depth: 26/44 00:00:32 56850kN, tb=151702
pawn racing
Moderators: hgm, Rebel, chrisw
-
- Posts: 1136
- Joined: Sun Feb 14, 2010 10:02 pm
Re: pawn racing
It is not correct solution. Houdini has a problem with 6th white move (pawn endgames).Houdini wrote:Using 4 cores Houdini 1.02 finds Kd6 at depth 31 in about 2 minutes:lech wrote:Houdini has another problem and probably can't solve it.
Maybe Stockfish is realy the best in endgames.Stockfish is indeed very good in endgames that require deep analysis, because of its aggressive pruning it goes deeper than most other engines.Code: Select all
30/67 0:32 +3.66 1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd4 4.Kc7 Ke5 5.Kb7 Kd6 6.f4 Nd5 7.f5 Nf6 8.Bf1 Ng8 9.Bd3 Nf6 10.Bc4 Ne4 11.Be6 Nf6 12.Bb3 Kd7 13.Bc2 Kd6 14.Bd3 (316.765.735) 9761 31/67 0:44 +3.66 1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd4 4.Kc7 Ke5 5.Kb7 Kd6 6.f4 Nd5 7.f5 Nf6 8.Bf1 Ng8 9.Bd3 Nf6 10.Bc4 Ne4 11.Be6 Nf6 12.Bb3 Kd7 13.Bc2 Kd6 14.Bd3 (442.939.355) 9879 31/67 1:33 +3.83++ 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kc3 4.Ke4 Kc4 5.Kxf3 Kb5 6.Ke4 Kxa6 7.f4 Kb6 8.f5 Kc7 9.Kd5 a5 10.f6 Kd7 (905.212.116) 9677 31/67 2:09 +4.18++ 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kc3 4.Ke4 Kc4 5.Kxf3 Kb5 6.Ke4 Kxa6 7.f4 Kb6 8.f5 Kc7 9.Kd5 a5 10.f6 Kd7 (1.232.771.099) 9491 31/67 3:50 +5.03++ 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kc3 4.Ke4 Kc4 5.Kxf3 Kb5 6.Ke4 Kxa6 7.f4 Kb6 8.f5 Kc7 9.Kd5 a5 10.f6 Kd7 (2.176.355.959) 9444
Robert
[d] 8/p7/P7/1k6/8/5K2/5P2/8 w - -
Correct is 6.Kg4 (!) instead of 6.Ke4 (??) which leads to draw.
-
- Posts: 1136
- Joined: Sun Feb 14, 2010 10:02 pm
Re: pawn racing
Thanks Marc!mhalstern wrote:Zappa Mexico II takes a little more than 1 minute:
New game
8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - - 0 1
Analysis by Zappa Mexico II 64:
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kd6 Nd4 6.Bd7 Kd3 7.f4
+- (1.63) Depth: 13/29 00:00:00 1555kN, tb=218
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kd6 Nd4 6.Bd7 Kd3 7.f4
+- (1.63) Depth: 13/29 00:00:00 1642kN, tb=281
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kd6 Nd4 6.Bd7 Kd3 7.f4
+- (1.63) Depth: 14/29 00:00:00 1958kN, tb=315
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kd6 Nd4 6.Bd7 Kd3 7.f4
+- (1.63) Depth: 14/29 00:00:00 2051kN, tb=397
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kc7 Nd4 6.Bd7 Nf3 7.Kb7 Ke1
+- (1.94) Depth: 15/29 00:00:01 3364kN, tb=589
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nc2 5.Kc7 Nd4 6.Bd7 Nf3 7.Kb7 Ke1
+- (1.94) Depth: 15/29 00:00:01 3675kN, tb=721
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nd5 5.Kd6 Nf4 6.Ke5 Ng6+ 7.Ke4 Kc3 8.Bd7 Nf8 9.Bf5
+- (2.00) Depth: 16/34 00:00:01 5567kN, tb=1133
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Nd5 5.Kd6 Nf4 6.Ke5 Ng6+ 7.Ke4 Kc3 8.Bd7 Nf8 9.Bf5
+- (2.00) Depth: 16/34 00:00:01 6413kN, tb=1530
1.Be4 Nxc2 2.Bxf3 Kd2 3.Bb7 Ke2 4.f4 Nd4 5.Kd6 Nf5+ 6.Ke5 Nh6 7.f5 Ke3 8.Bc8 Nxf5 9.Bxf5
+- (2.81) Depth: 17/38 00:00:04 17599kN, tb=6167
1.Be4 Nxc2 2.Bxf3 Kd2 3.Bb7 Ke2 4.f4 Nd4 5.Kd6 Nf5+ 6.Ke5 Nh6 7.f5 Ke3 8.Bc8 Nxf5 9.Bxf5
+- (2.81) Depth: 17/38 00:00:04 18915kN, tb=6728
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Be2 Nc6 8.Bf1 Kd6 9.Bb5 Nd4 10.Ba4 Ne6 11.Kxa7
+- (4.44) Depth: 18/55 00:00:10 45282kN, tb=20455
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Be2 Nc6 8.Bf1 Kd6 9.Bb5 Nd4 10.Ba4 Ne6 11.Kxa7
+- (4.44) Depth: 18/55 00:00:10 46750kN, tb=20833
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.f3 Kc6 10.f4 Kd7 11.Bc4 Ke7 12.Kb7 Nc2
+- (4.77) Depth: 19/55 00:00:12 56792kN, tb=28836
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.f3 Kc6 10.f4 Kd7 11.Bc4 Ke7 12.Kb7 Nc2
+- (4.77) Depth: 19/55 00:00:13 58914kN, tb=29482
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.f3 Kc6 10.f4 Kd7 11.Bc4 Ke7 12.Kb7 Nc2
+- (4.77) Depth: 20/55 00:00:15 69445kN, tb=37131
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.f3 Kc6 10.f4 Kd7 11.Bc4 Ke7 12.Kb7 Nc2
+- (4.77) Depth: 20/55 00:00:16 73722kN, tb=40094
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.Bc4 Nc6+ 10.Ka8 Na7 11.Kxa7 Kd6
+- (4.89) Depth: 21/55 00:00:23 107mN, tb=67293
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.Bc4 Nc6+ 10.Ka8 Na7 11.Kxa7 Kd6
+- (4.89) Depth: 21/55 00:00:26 126mN, tb=81080
1.Be4 Nxc2 2.Bxf3 Nb4 3.Be2 Kd2 4.Bb5 Kc3 5.Kc8 Kd4 6.Kb7 Kc5 7.Bf1 Kd6 8.Kxa7 Kc7 9.Bc4 Nc6+
+- (4.89) Depth: 22/55 00:00:37 184mN, tb=120156
1.Kd6 Kb4 2.Bd3 Ne2 3.Kc6 Nd4+ 4.Kb7 Kc5 5.c3 Ne2 6.Kxa7 Nxc3 7.Kb8 Kd4 8.Bc2 Nb5 9.Ba4 Nc3 10.a7 Kd3 11.Bc6
+- (6.98) Depth: 22/55 00:00:59 325mN, tb=177023
1.Kd6 Kb4 2.Bd3 Ne2 3.Kc6 Nd4+ 4.Kb7 Kc5 5.c3 Ne2 6.Kxa7 Nxc3 7.Kb8 Kd4 8.Bc2 Nb5 9.Ba4 Nc3 10.a7 Kd3 11.Bc6
+- (6.98) Depth: 22/55 00:01:00 336mN, tb=186807
1.Kd6 Kb4 2.Bd3 Kc3 3.Kd5 Ne2 4.Kc6 Nf4 5.Be4 Kd4 6.Bxf3 Ke5 7.Kb7 Kd6 8.Kxa7 Kc7 9.Ka8 Ng6 10.Bd5 Nf8 11.f4 Ng6 12.f5 Ne5 13.Ka7 Nd7
+- (7.19) Depth: 23/65 00:01:13 422mN, tb=202056
1.Kd6 Kb4 2.Bd3 Kc3 3.Bg6
+- (7.19) Depth: 23/65 00:01:19 459mN, tb=228505
1.Kd6 Kb4 2.Bd3 Kc3 3.Kd5 Ne2 4.Kc6 Nf4 5.Bh7 Nh3 6.Be4 Ng5 7.Bxf3 Nxf3 8.Kb7 Ne5 9.Kxa7 Kd2 10.Kb7 Nc4
+- (10.84) Depth: 24/67 00:02:06 770mN, tb=376024
1.Kd6 Kb4 2.Bd3 Kc3 3.Kd5 Ne2 4.Kc6 Nf4 5.Bh7 Nh3 6.Be4 Ng5 7.Bxf3 Nxf3 8.Kb7 Ne5 9.Kxa7 Kd2 10.Ka8 Ke2
+- (10.84) Depth: 24/67 00:02:14 826mN, tb=407380
1.Kd6 Kb4 2.Bd3 Kc3 3.Kd5 Ne2 4.Kc6 Nf4 5.Bh7 Nh3 6.Be4 Kd2 7.Kb7 Ng5 8.Bf5 Ke1 9.Kxa7 Kxf2 10.Bd3 Nh3 11.Kb6 Nf4 12.a7 Nd5+ 13.Kb7 Ne3 14.a8Q Kg1 15.Qa1+ Nf1 16.Bxf1
+- (12.03) Depth: 25/69 00:03:33 1349mN, tb=587830
Zappa Mexico gives very high score for 1.Be4 which leads to draw
[d]8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - -
1.Be4 (??) Sxc2 2.Bxf3 Sb4 3.Be2 Kd4 4.Kc7 Kc5 5.Kb7 Kd6 =
[d] 8/pK6/P2k4/8/1n6/8/4BP2/8 w - -
-
- Posts: 6401
- Joined: Thu Mar 09, 2006 8:30 pm
- Location: Chicago, Illinois, USA
Re: pawn racing
With TBs Gaviota sees Kd6 in 0.2 secondslech wrote:[d] 8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - -
1.Kd6!
Which engine is able to find this solution faster than others?
Code: Select all
setboard 8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - -
d
+-----------------+
| . . . . . . . . |
| p . . K . . . . |
| P . . . . . B . |
| . . . . . . . . | Castling:
| . . . n . . . . | ep: -
| . . k . . p . . |
| . . P . . P . . |
| . . . . . . . . | [White]
+-----------------+
analyze
********* Starts iterative deepening, thread = 0
set timer to infinite
17 1: 0.0 +0.99 1.Be4
102 2: 0.0 +0.85 1.Be4 Kd2
416 3: 0.0 +0.96 1.Be4 Kc4 2.Kd6
2900 4: 0.0 +0.85 1.Kc7 Kd2 2.c4 Ke1 3.Kb7
9672 5: 0.0 +0.99 1.Be4 Kd2 2.Ke7 Kc3 3.Kd6
13867 6 0.1 +0.76 1.Be4 Kd2 2.Kd6 Nxc2 3.Bxf3 Nd4
20207 6 0.1 +0.89 1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Ne6 4.Kxa7
Kxf2
24360 6: 0.1 +0.89 1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Ne6 4.Kxa7
Kxf2
36229 7 0.2 +0.86 1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Nb5 4.c4 Nd4
43899 7 0.2 +0.87 1.Be4 Kd2 2.Kd6 Nxc2 3.Bxf3 Nd4 4.Bd5
58096 7 0.2 +0.92 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kd3 4.Kf4
Ke2 5.Kg3 Kd3 6.Kxf3
64824 7: 0.2 +0.92 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kd3 4.Kf4
Ke2 5.Kg3 Kd3 6.Kxf3
110176 8 0.3 +1.02 1.Kd6 Kd2 2.Ke5 Kc3 3.Kf4 Kc4 4.Bd3+
Kc3 5.Ke3
135133 8: 0.4 +1.02 1.Kd6 Kd2 2.Ke5 Kc3 3.Kf4 Kc4 4.Bd3+
Kc3 5.Ke3
220659 9 0.5 +1.09 1.Kd6 Kd2 2.Ke5 Ne2 3.Be4 Ke1 4.Bxf3
Nc3 5.Kd4 Kxf2 6.Kxc3 Kxf3
284364 9: 0.6 +1.09 1.Kd6 Kd2 2.Ke5 Ne2 3.Be4 Ke1 4.Bxf3
Nc3 5.Kd4 Kxf2 6.Kxc3 Kxf3
421979 10 0.9 +1.09 1.Kd6 Kd2 2.Ke5 Ne2 3.Be4 Ke1 4.Bxf3
Nc3 5.Kd4 Kxf2 6.Kxc3 Kxf3
832308 10: 1.6 +1.09 1.Kd6 Kd2 2.Ke5 Ne2 3.Be4 Ke1 4.Bxf3
Nc3 5.Kd4 Kxf2 6.Kxc3 Kxf3
1259951 11 2.3 +1.14 1.Kd6 Kd2 2.Ke5 Ne2 3.Ke4 Kxc2 4.Kxf3+
Kd2 5.Bf7 Ke1 6.Ke3 Nc3
1541956 11: 2.8 +1.14 1.Kd6 Kd2 2.Ke5 Ne2 3.Ke4 Kxc2 4.Kxf3+
Kd2 5.Bf7 Ke1 6.Ke3 Nc3
2364985 12 4.3 :-) 1.Kd6
3114336 12 5.5 +1.46 1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Ke1 4.Ke3
Ne5 5.Bd3 Ng4+ 6.Kf4 Nxf2 7.Kxf3 Nd1
4213197 12: 7.4 +1.46 1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Ke1 4.Ke3
Ne5 5.Bd3 Ng4+ 6.Kf4 Nxf2 7.Kxf3 Nd1
7798005 13 13.3 +1.61 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Ne2 4.Bxf3
Nc1 5.Kf5 Kxf2 6.Kf4 Na2 7.Bd5
8921788 13: 15.0 +1.61 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Ne2 4.Bxf3
Nc1 5.Kf5 Kxf2 6.Kf4 Na2 7.Bd5
15314233 14 24.6 +1.49 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Ne2 4.Bxf3
Nc1 5.Bd5 Kxf2 6.Ke4 Ke1 7.Bc4 Kd2
20666339 14: 33.6 +1.49 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Ne2 4.Bxf3
Nc1 5.Bd5 Kxf2 6.Ke4 Ke1 7.Bc4 Kd2
36690620 15 59.6 :-) 1.Kd6
76292408 15 124.5 +2.52 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nc3 6.Bxf3 Ke3 7.Kxa7 Kd2
8.Kb6 Kxc2
84562374 15: 138.6 +2.52 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nc3 6.Bxf3 Ke3 7.Kxa7 Kd2
8.Kb6 Kxc2
138645492 16 231.6 :-) 1.Kd6
181963019 16 304.9 +2.94 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nd4 6.Kxa7 Ke3 7.Bxf3 Kf4
8.c4 Ne6
208830325 16: 359.2 +2.94 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nd4 6.Kxa7 Ke3 7.Bxf3 Kf4
8.c4 Ne6
375063002 17 666.5 +3.09 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nc3 6.Bxf3 Na4 7.Kxa7 Nc5
8.Bd5 Ke3 9.Kb6
487453836 17: 904.1 +3.09 1.Kd6 Kd2 2.Kd5 Ne2 3.Kc6 Ke1 4.Kb7
Kxf2 5.Be4 Nc3 6.Bxf3 Na4 7.Kxa7 Nc5
8.Bd5 Ke3 9.Kb6
Code: Select all
d
+-----------------+
| . . . . . . . . |
| p . . K . . . . |
| P . . . . . B . |
| . . . . . . . . | Castling:
| . . . n . . . . | ep: -
| . . k . . p . . |
| . . P . . P . . |
| . . . . . . . . | [White]
+-----------------+
clearbrain
tbuse off
analyze
********* Starts iterative deepening, thread = 0
set timer to infinite
17 1: 0.0 +0.99 1.Be4
102 2: 0.0 +0.85 1.Be4 Kd2
416 3: 0.0 +0.96 1.Be4 Kc4 2.Kd6
2809 4: 0.0 +0.85 1.Kc7 Kd2 2.c4 Ke1 3.Kb7
9628 5: 0.0 +0.99 1.Be4 Kd2 2.Ke7 Kc3 3.Kd6
13734 6 0.0 +0.76 1.Be4 Kd2 2.Kd6 Nxc2 3.Bxf3 Nd4
21459 6 0.0 +1.00 1.Kc7 Kd2 2.Bd3 Ne6+ 3.Kb8 Ke1 4.c3
25204 6: 0.0 +1.00 1.Kc7 Kd2 2.Bd3 Ne6+ 3.Kb8 Ke1 4.c3
39020 7 0.1 +0.86 1.Kc7 Kd2 2.Kb7 Ke2 3.c3 Nb5 4.c4 Nd4
46971 7 0.1 +0.87 1.Be4 Kd2 2.Kd6 Nxc2 3.Bxf3 Nd4 4.Bd5
61896 7 0.1 +0.92 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kd3 4.Kf4
Kc4 5.Kxf3 Kd5
68771 7: 0.1 +0.92 1.Kd6 Nxc2 2.Bxc2 Kxc2 3.Ke5 Kd3 4.Kf4
Kc4 5.Kxf3 Kd5
108662 8 0.2 +0.93 1.Kd6 Kd2 2.Ke5 Nxc2 3.Bxc2 Kxc2 4.Kf4
Kc3 5.Kxf3 Kd3 6.Kf4
138713 8: 0.2 +0.93 1.Kd6 Kd2 2.Ke5 Nxc2 3.Bxc2 Kxc2 4.Kf4
Kc3 5.Kxf3 Kd3 6.Kf4
264693 9 0.4 :-( 1.Kd6
377907 9 0.6 +1.00 1.Kc7 Kd2 2.Kb7 Ke1 3.Kxa7 Kxf2 4.Kb6
Ke1 5.a7 f2 6.a8=Q f1=Q
433124 9: 0.7 +1.00 1.Kc7 Kd2 2.Kb7 Ke1 3.Kxa7 Kxf2 4.Kb6
Ke1 5.a7 f2 6.a8=Q f1=Q
659196 10 1.1 :-) 1.Kc7
895466 10 1.5 :-) 1.Kc7
1304146 10 2.1 +3.23 1.Kc7 Kd2 2.Kb7 Nb5 3.c4 Nd6+ 4.Kxa7
Ke2 5.Kb8 Nxc4 6.a7 Nb6 7.Kb7
1434220 10: 2.3 +3.23 1.Kc7 Kd2 2.Kb7 Nb5 3.c4 Nd6+ 4.Kxa7
Ke2 5.Kb8 Nxc4 6.a7 Nb6 7.Kb7
2753755 11 4.3 +3.27 1.Kc7 Ne6+ 2.Kb7 Kb4 3.Kxa7 Ka5 4.Be4
Nc7 5.Bd3 Nd5 6.Kb7 Ka4
3170115 11: 4.9 +3.27 1.Kc7 Ne6+ 2.Kb7 Kb4 3.Kxa7 Ka5 4.Be4
Nc7 5.Bd3 Nd5 6.Kb7 Ka4
5702115 12 8.7 +3.54 1.Kc7 Kc4 2.Kb7 Kc5 3.Kxa7 Kc6 4.Be4+
Kc7 5.c4 Nb3 6.Bxf3 Nc5 7.Bd5
6877970 12: 10.3 +3.54 1.Kc7 Kc4 2.Kb7 Kc5 3.Kxa7 Kc6 4.Be4+
Kc7 5.c4 Nb3 6.Bxf3 Nc5 7.Bd5
11216426 13 16.5 :-( 1.Kc7
14153781 13 20.6 :-(
16600023 13 24.0 :-( 1.Kc7
21543488 13 30.9 :-(
25092391 13 36.1 +1.02 1.Kc7 Nxc2 2.Bxc2 Kxc2 3.Kb7 Kd3 4.Kxa7
Ke2 5.Kb6 Kxf2 6.a7 Kg1 7.a8=R f2
8.Rg8+ Kh2
37127901 13 53.4 +1.39 1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Ke2 4.Kg3
Kd2 5.Bd3 Nd4 6.Kf4 Ne6+ 7.Kxf3 Nc5
8.Bf5 Nxa6
38521097 13: 55.3 +1.39 1.Kd6 Kd2 2.Ke5 Nc6+ 3.Kf4 Ke2 4.Kg3
Kd2 5.Bd3 Nd4 6.Kf4 Ne6+ 7.Kxf3 Nc5
8.Bf5 Nxa6
47462727 14 68.4 +1.42 1.Kd6 Kd2 2.Bd3 Ke1 3.Kc7 Kxf2 4.Kb7
Ke3 5.Kxa7 Ne2 6.Kb6 f2 7.a7 f1=Q
8.a8=Q Qf6+ 9.Qc6 Qxc6+ 10.Kxc6
52793170 14: 76.2 +1.42 1.Kd6 Kd2 2.Bd3 Ke1 3.Kc7 Kxf2 4.Kb7
Ke3 5.Kxa7 Ne2 6.Kb6 f2 7.a7 f1=Q
8.a8=Q Qf6+ 9.Qc6 Qxc6+ 10.Kxc6
86930930 15 125.8 +1.53 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Nxc2 4.Bxc2
Kxf2 5.Be4 Ke2 6.Bc6 f2 7.Bb5+ Ke1
8.Kd6 Kd2 9.Bc4
96497475 15: 139.5 +1.53 1.Kd6 Kd2 2.Be4 Ke1 3.Ke5 Nxc2 4.Bxc2
Kxf2 5.Be4 Ke2 6.Bc6 f2 7.Bb5+ Ke1
8.Kd6 Kd2 9.Bc4
Last edited by michiguel on Tue Jun 22, 2010 3:02 pm, edited 1 time in total.
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Re: pawn racing
Of course, the line shown is not Houdini's final analysis - as you can see from the ++ in the score we're still in a fail high condition, or in other words, the PV shown is meaningless.lech wrote:It is not correct solution. Houdini has a problem with 6th white move (pawn endgames).
To get the full main line longer analysis is needed.
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Re: pawn racing
lech wrote:[d] 8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - -
1.Kd6!
Which engine is able to find this solution faster than others?
Shredder 12 finds it instantly!
25 0:05 +4.96 1.Kd6 Kc4 2.Kc7 Kb5 3.Kb7 Ne6 4.Bd3+ Kc5 5.Bf5 Nd4 6.Be4
average search depth 25 half-moves after 0:04 min; evaluation +4.96 means white has decisive
after more time :
8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - -
Engine: Deep Shredder 12 x64 (512 MB)
by Stefan Meyer-Kahlen
29/55 2:18 +13.03 1.Kd6 Kc4 2.Bd3+ Kb4 3.Kd5 Ne2 4.Kc6 Nd4+
5.Kb7 Kc5 6.c3 Ne6 7.Bf5 Ng7 8.Bg4 Kd6
9.c4 Ne8 10.Bxf3 Nf6 11.c5+ Ke7
12.Kxa7 Nd7 13.Kb7 Nxc5+ 14.Kb6 (542.872.472) 3928
SB:21.540.796
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- Location: Almeria. SPAIN
Re: pawn racing
Dirty 6J-22 finds it quite fast :
FEN: 8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - - 0 1
Dirty 6J-22:
1 00:00 4 4 +0,56 Bd3
1 00:00 9 9 +0,74 Be4
1 00:00 20 20 +0,74 Be4
2 00:00 43 43 +0,82 Be4 Kc4
2 00:00 89 89 +0,82 Be4 Kc4
3 00:00 171 171 +0,91 Be4 Kc4 Kd6
3 00:00 278 278 +0,91 Be4 Kc4 Kd6
4 00:00 410 410 +0,98 Be4 Kc4 Kd6 Kc3
4 00:00 718 718 +0,98 Be4 Kc4 Kd6 Kc3
5 00:00 1.053 1.053 +1,06 Be4 Kc4 Kd6 Kc3 Ke5
5 00:00 1.810 1.810 +1,06 Be4 Kc4 Kd6 Kc3 Ke5
6 00:00 2.699 2.699 +1,14 Be4 Kc4 Kd6 Kb4 Ke5 Kc3
6 00:00 7.357 735.700 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2
6 00:00 7.862 786.200 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2
7 00:00 9.210 921.000 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2 Kxa7
7 00:00 11.058 1.105.800 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2 Kxa7
8 00:00 18.419 613.966 +1,42 Kc7 Kd2 Kb7 Ke2 c3 Ne6 Bf5 Nf4
8 00:00 22.841 571.025 +1,42 Kc7 Kd2 Kb7 Ke2 c3 Ne6 Bf5 Nf4
9 00:00 31.713 528.550 +1,42 Kc7 Kd2 Kb7 Ne6 Kxa7 Ke1 Kb8 Kxf2 a7 Nd4 a8=Q
9 00:00 44.031 366.925 +1,42 Kc7 Kd2 Kb7 Ne6 Kxa7 Ke1 Kb8 Kxf2 a7 Nd4 a8=Q
10 00:00 86.294 345.176 +0,70 Kc7 Nxc2 Kb7 Nb4 Be4 Kd2 Bxf3 Ke1 Be4 Kxf2
10 00:00 151.781 433.660 +1,32 Kd6 Ne2 Be4 Ng1 Bf5 Kd2 Kc6 Ne2 Kd5 Nc3+ Kd4
10 00:00 164.734 411.835 +1,32 Kd6 Ne2 Be4 Ng1 Bf5 Kd2 Kc6 Ne2 Kd5 Nc3+ Kd4
11 00:00 266.497 397.756 +0,53 Kd6 Nxc2 Be4 Ne1 Kc7 Nd3 Bxf3 Nxf2 Kd6 Kd4 Ke6
11 00:00 351.522 390.580 +0,98 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kd4 f4 Nb4
11 00:00 368.149 387.525 +0,98 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kd4 f4 Nb4
12 00:01 410.011 376.156 +1,06 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kf4 f3
12 00:01 451.156 366.793 +1,06 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kf4 f3
13 00:01 550.190 329.455 +1,00 Be4 Nxc2 Bxf3 Nb4 Bb7 Kd4 Kd6 Nd3 f3 Nb4 Be4 Nxa6 Bd5 Nb4
13 00:02 1.051.055 370.089 +2,21 Kd6 Kd2 Be4 Kc3 Kd5 Ne2 Bxf3 Nf4+ Kc6 Ne6 Kd6 Nd4 Be4 Nxc2 Bxc2 Kd4 Kc7 Kc3 f4 Kd2 Be4
13 00:03 1.111.785 338.958 +2,21 Kd6 Kd2 Be4 Kc3 Kd5 Ne2 Bxf3 Nf4+ Kc6 Ne6 Kd6 Nd4 Be4 Nxc2 Bxc2 Kd4 Kc7 Kc3 f4 Kd2 Be4
14 00:03 1.300.902 336.150 +2,09 Kd6 Kd2 Be4 Kc3 Kd5 Nb5 Bxf3 Nc7+ Ke5 Nxa6 Be4 Nb4 f4 a5 f5
14 00:06 1.494.584 239.133 +2,09 Kd6 Kd2 Be4 Kc3 Kd5 Nb5 Bxf3 Nc7+ Ke5 Nxa6 Be4 Nb4 f4 a5 f5
15 00:14 3.153.478 217.481 +2,80 Kd6 Kc4 Bd3+ Kc3 Be4 Kb4 Kc7 Kc5 Kb7 Kd6 Kb8 Ke5 Kb7 Kxe4 Kxa7 Nb5+ Kb6 Nd6 a7 Nc8+ Kc7 Nxa7 Kb8 Kd4
FEN: 8/p2K4/P5B1/8/3n4/2k2p2/2P2P2/8 w - - 0 1
Dirty 6J-22:
1 00:00 4 4 +0,56 Bd3
1 00:00 9 9 +0,74 Be4
1 00:00 20 20 +0,74 Be4
2 00:00 43 43 +0,82 Be4 Kc4
2 00:00 89 89 +0,82 Be4 Kc4
3 00:00 171 171 +0,91 Be4 Kc4 Kd6
3 00:00 278 278 +0,91 Be4 Kc4 Kd6
4 00:00 410 410 +0,98 Be4 Kc4 Kd6 Kc3
4 00:00 718 718 +0,98 Be4 Kc4 Kd6 Kc3
5 00:00 1.053 1.053 +1,06 Be4 Kc4 Kd6 Kc3 Ke5
5 00:00 1.810 1.810 +1,06 Be4 Kc4 Kd6 Kc3 Ke5
6 00:00 2.699 2.699 +1,14 Be4 Kc4 Kd6 Kb4 Ke5 Kc3
6 00:00 7.357 735.700 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2
6 00:00 7.862 786.200 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2
7 00:00 9.210 921.000 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2 Kxa7
7 00:00 11.058 1.105.800 +1,36 Kc7 Kd2 c4 Ke1 Kb8 Kxf2 Kxa7
8 00:00 18.419 613.966 +1,42 Kc7 Kd2 Kb7 Ke2 c3 Ne6 Bf5 Nf4
8 00:00 22.841 571.025 +1,42 Kc7 Kd2 Kb7 Ke2 c3 Ne6 Bf5 Nf4
9 00:00 31.713 528.550 +1,42 Kc7 Kd2 Kb7 Ne6 Kxa7 Ke1 Kb8 Kxf2 a7 Nd4 a8=Q
9 00:00 44.031 366.925 +1,42 Kc7 Kd2 Kb7 Ne6 Kxa7 Ke1 Kb8 Kxf2 a7 Nd4 a8=Q
10 00:00 86.294 345.176 +0,70 Kc7 Nxc2 Kb7 Nb4 Be4 Kd2 Bxf3 Ke1 Be4 Kxf2
10 00:00 151.781 433.660 +1,32 Kd6 Ne2 Be4 Ng1 Bf5 Kd2 Kc6 Ne2 Kd5 Nc3+ Kd4
10 00:00 164.734 411.835 +1,32 Kd6 Ne2 Be4 Ng1 Bf5 Kd2 Kc6 Ne2 Kd5 Nc3+ Kd4
11 00:00 266.497 397.756 +0,53 Kd6 Nxc2 Be4 Ne1 Kc7 Nd3 Bxf3 Nxf2 Kd6 Kd4 Ke6
11 00:00 351.522 390.580 +0,98 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kd4 f4 Nb4
11 00:00 368.149 387.525 +0,98 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kd4 f4 Nb4
12 00:01 410.011 376.156 +1,06 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kf4 f3
12 00:01 451.156 366.793 +1,06 Be4 Nxc2 Bxf3 Nb4 Be2 Kd4 Kd6 Ke4 Bc4 Nxa6 Bd5+ Kf4 f3
13 00:01 550.190 329.455 +1,00 Be4 Nxc2 Bxf3 Nb4 Bb7 Kd4 Kd6 Nd3 f3 Nb4 Be4 Nxa6 Bd5 Nb4
13 00:02 1.051.055 370.089 +2,21 Kd6 Kd2 Be4 Kc3 Kd5 Ne2 Bxf3 Nf4+ Kc6 Ne6 Kd6 Nd4 Be4 Nxc2 Bxc2 Kd4 Kc7 Kc3 f4 Kd2 Be4
13 00:03 1.111.785 338.958 +2,21 Kd6 Kd2 Be4 Kc3 Kd5 Ne2 Bxf3 Nf4+ Kc6 Ne6 Kd6 Nd4 Be4 Nxc2 Bxc2 Kd4 Kc7 Kc3 f4 Kd2 Be4
14 00:03 1.300.902 336.150 +2,09 Kd6 Kd2 Be4 Kc3 Kd5 Nb5 Bxf3 Nc7+ Ke5 Nxa6 Be4 Nb4 f4 a5 f5
14 00:06 1.494.584 239.133 +2,09 Kd6 Kd2 Be4 Kc3 Kd5 Nb5 Bxf3 Nc7+ Ke5 Nxa6 Be4 Nb4 f4 a5 f5
15 00:14 3.153.478 217.481 +2,80 Kd6 Kc4 Bd3+ Kc3 Be4 Kb4 Kc7 Kc5 Kb7 Kd6 Kb8 Ke5 Kb7 Kxe4 Kxa7 Nb5+ Kb6 Nd6 a7 Nc8+ Kc7 Nxa7 Kb8 Kd4
Saludos, Andres