Difficult position for Stockfish

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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Difficult position for Stockfish

Post by kgburcham »

[D] 6Q1/8/3p4/2pPk1p1/1p5P/1P4PK/2q5/8 b - -



Engine: Stockfish 070117 64 BMI2 (8192 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.


26/61 0:21 -3.96++ 1...Qf5+ (512.903.589) 23735
26/61 0:23 -4.12++ 1...Qf5+ (567.207.760) 24069
26/61 0:26 -51.25++ 1...g4+ (639.550.435) 24527
26/61 0:26 -51.43 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.h6 Kf6 6.h7 Kg7 7.bxc4 b3 8.Kf5 b2 9.Ke6 b1Q 10.Kxd6 Qb6+ 11.Kd7 Qd4 12.h8N Kxh8 13.Ke6 Qxc4 14.Ke5 Kh7 (651.780.649) 24668
27/61 0:26 -51.50++ 1...g4+ (652.394.235) 24674
27/61 0:26 -51.50 1...g4+ 2.Qxg4 Qf5 3.h5 c4 4.h6 Qxg4+ 5.Kxg4 Kf6 6.h7 Kg7 7.bxc4 b3 8.Kf5 b2 9.Ke6 b1Q 10.Kxd6 Qb6+ 11.Kd7 Qd4 12.h8N Kxh8 13.Ke6 Qxc4 14.Ke5 Kh7 (652.898.299) 24680
28/61 0:26 -51.43-- 1...g4+ 2.Qxg4 (653.246.209) 24683
28/61 0:26 -51.50++ 1...g4+ (653.382.272) 24684
28/61 0:26 -51.50 1...g4+ 2.Qxg4 Qf5 3.h5 c4 4.h6 Qxg4+ 5.Kxg4 Kf6 6.h7 Kg7 7.bxc4 b3 8.Kf5 b2 9.Ke6 b1Q 10.Kxd6 Qb6+ 11.Kd7 Qd4 12.Ke6 Qxc4 13.Ke5 Kxh7 14.Kd6 Kg6 (653.475.813) 24684
29/61 0:26 -51.58++ 1...g4+ (663.594.079) 24817
29/61 0:26 -51.65++ 1...g4+ (667.344.031) 24871
29/61 0:27 -51.76++ 1...g4+ (681.600.597) 25052
29/61 0:27 -51.91++ 1...g4+ (693.520.207) 25192
29/61 0:28 -52.12++ 1...g4+ (712.960.101) 25418
29/61 0:28 -52.40++ 1...g4+ (732.430.189) 25640
29/61 0:28 -52.77++ 1...g4+ (738.546.739) 25713
29/61 0:29 -53.26++ 1...g4+ (752.531.131) 25869
29/61 0:29 -53.88++ 1...g4+ (765.974.351) 26025
29/61 0:29 -54.68++ 1...g4+ (773.266.456) 26108
29/61 0:29 -55.70++ 1...g4+ (780.006.935) 26191
29/61 0:29 -56.99++ 1...g4+ (788.529.174) 26286
29/61 0:30 -58.62++ 1...g4+ (795.493.464) 26374
29/61 0:30 -60.68++ 1...g4+ (801.776.023) 26453
29/61 0:30 -63.27++ 1...g4+ (822.302.179) 26637
29/61 0:31 -66.53++ 1...g4+ (831.609.875) 26737
29/61 0:31 -63.27-- 1...g4+ 2.Qxg4 (831.929.433) 26739
29/61 0:31 -67.22++ 1...g4+ (840.489.622) 26849
29/61 0:31 -73.66++ 1...g4+ (845.734.295) 26907
29/61 0:31 -81.72++ 1...g4+ (851.042.425) 26970
29/61 0:31 -91.83++ 1...g4+ (862.690.278) 27090
29/61 0:31 -104.47++ 1...g4+ (865.567.653) 27119
29/61 0:31 -76.95-- 1...g4+ 2.Qxg4 (866.633.719) 27128
29/61 0:31 -107.11++ 1...g4+ (867.660.980) 27137
29/61 0:33 -128.50 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.h6 Kf6 6.h7 Kg7 7.bxc4 b3 8.Kf5 b2 9.h8B+ Kxh8 10.Ke6 b1Q 11.Kxd6 Qb6+ 12.Ke5 Qc5 13.Ke6 Qxc4 14.Ke5 Kh7 (933.672.967) 27563
30/61 0:34 -M57++ 1...g4+ (966.225.606) 27797
30/61 0:36 -M48++ 1...g4+ (1.010.860.572) 28042
30/61 0:37 -M35++ 1...g4+ (1.047.845.676) 28249
30/61 0:37 -M33 1...g4+ 2.Qxg4 Qf5 3.Qxf5+ Kxf5 4.g4+ Kf6 5.g5+ Kf7 6.Kg4 c4 7.bxc4 b3 8.Kf5 b2 9.g6+ Ke7 10.Kf4 b1Q 11.g7 Qc1+ 12.Kf5 Qf1+ 13.Ke4 Qxc4+ 14.Ke3 Qxd5 (1.055.166.240) 28274
31/61 0:38 -M32 1...g4+ 2.Qxg4 Qf5 3.Qxf5+ Kxf5 4.g4+ Kf6 5.g5+ Kf7 6.Kg4 c4 7.bxc4 b3 8.Kf5 b2 9.g6+ Ke7 10.Kf4 b1Q 11.g7 Qc1+ 12.Kf5 Qf1+ 13.Kg5 Qf6+ 14.Kg4 Qxg7+ (1.078.980.255) 28350
32/61 0:38 -M31 1...g4+ 2.Qxg4 Qf5 3.Qxf5+ Kxf5 4.g4+ Kf6 5.g5+ Kf7 6.Kg4 c4 7.bxc4 b3 8.Kf5 b2 9.g6+ Ke7 10.Kf4 b1Q 11.g7 Qg6 12.Ke3 Qxg7 13.Kd3 Qh7+ 14.Kc3 Qxh4 (1.094.945.342) 28402
33/61 0:42 -M29 1...g4+ 2.Qxg4 Qf5 3.Qxf5+ Kxf5 4.g4+ Kf6 5.Kg3 c4 6.bxc4 b3 7.c5 b2 8.Kf4 b1Q 9.c6 Qd3 10.c7 Qc4+ 11.Ke3 Qxc7 12.Kd4 Qc5+ 13.Ke4 Qc4+ 14.Kf3 Qd3+ (1.212.972.241) 28750
34/61 0:46 -M28 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.356.134.917) 29082
35/61 0:46 -M28 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.357.082.976) 29086
36/61 0:46 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.363.238.424) 29106
37/61 0:47 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.369.261.369) 29125
38/61 0:47 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.373.185.162) 29133
39/61 0:47 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.374.773.812) 29134
40/61 0:47 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.379.531.988) 29139
41/61 0:47 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.386.835.825) 29156
42/61 0:48 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.404.328.794) 29189
43/61 0:48 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.412.512.362) 29193
44/61 0:49 -M27 1...g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.bxc4 b3 6.h6 Kf6 7.h7 Kg7 8.c5 b2 9.cxd6 b1Q 10.Kf4 Qd3 11.Ke5 Qxg3+ 12.Ke6 Qe3+ 13.Kd7 Kxh7 14.Kc6 Qc3+ (1.441.781.379) 29261
no chess program was born totally from one mind. all chess programs have many ideas from many minds.
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Jouni
Posts: 3291
Joined: Wed Mar 08, 2006 8:15 pm

Re: Difficult position for Stockfish

Post by Jouni »

Actually obviously mate in 25:

Analysis by Stockfish MateFinder 64

1...g4+ 2.Qxg4 Qf5 3.Qxf5+ Kxf5 4.g4+ Kg6 5.g5 c4 6.bxc4 b3 7.Kg4 b2 8.h5+ Kg7 9.Kf5 b1Q+ 10.Ke6 Qe4+ 11.Kxd6 Qxc4 12.Ke5 Qe2+ 13.Kf4 Qxh5 14.Kf5 Qe2 15.d6 Qe3 16.g6 Qe8 17.Kf4 Kxg6 18.Kg4 Qd7+ 19.Kf3 Qxd6 20.Kg2 Qd2+ 21.Kg3 Qe2 22.Kf4 Kf6 23.Kg3 Kg5 24.Kh3 Kf4 25.Kh4 Qh2#
-+ (-#25) Depth: 42/53 00:00:21 245mN, tb=7850564
Jouni
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Damir
Posts: 2801
Joined: Mon Feb 11, 2008 3:53 pm
Location: Denmark
Full name: Damir Desevac

Re: Difficult position for Stockfish

Post by Damir »

Jouni wrote:[D]6Q1/8/3p4/2pPk1p1/1p5P/1P4PK/2q5/8 b - - 0 1

Well-known from many test suites. Houdini and Komodo find mating -g4+ almost instantly, but SF8 not in 5 minutes. I gave up :) .
Did you try MateFinder ? :)
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Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Difficult position for Stockfish

Post by Paloma »

Hmm, I have here matt in 24. 8-)

Forward / backward with DeepShredder13 without TB's

[pgn]
[Event "Quirky"]
[Site "?"]
[Date "2014.06.26"]
[Round "?"]
[White "Quirky 16"]
[Black "?"]
[Result "0-1"]
[Annotator "?"]
[SetUp "1"]
[FEN "6Q1/8/3p4/2pPk1p1/1p5P/1P4PK/2q5/8 b - - 0 1"]
[PlyCount "11"]

1... g4+ $1 2. Qxg4 Qf5 3. h5 (3. Qxf5+ Kxf5 4. g4+ Kg6 5. Kg3 c4 6. bxc4 b3) 3... Qxg4+ 4. Kxg4 c4 5. bxc4 b3
6. h6 Kf6 0-1
[/pgn]

1... g4+ $1 {24#} 2. Qxg4 Qf5 3. h5 (3. Qxf5+ Kxf5 {21#} 4. g4+ Kg6 {20#} 5. Kg3 c4 6. bxc4 b3 {18#})
3... Qxg4+ {22#} 4. Kxg4 c4 {21#} 5. bxc4 b3 6. h6 Kf6 {19#} 0-1
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User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Difficult position for Stockfish

Post by Nordlandia »

Here is another difficult position for Stockfish :arrow:

Gady Costeff, 6th place 7th WCCT 2001-2004, white wins!

[d]k1q5/2P3PP/p5p1/P5p1/PP4P1/1QK1n3/3p4/r3r2N w - - 0 0

Analysis:

Code: Select all

[Event "6th Place, WCCT7 {m}"]
[Site "?"]
[Date "2004.??.??"]
[Round "?"]
[White "Costeff, Gady"]
[Black "White wins"]
[Result "*"]
[SetUp "1"]
[FEN "k1q5/2P3PP/p5p1/P5p1/PP4P1/1QK1n3/3p4/r3r2N w - - 0 1"]
[PlyCount "39"]
[EventDate "2004.??.??"]

1. g8=Q (1. g8=R Rac1+ 2. Kxd2 Nc4+ 3. Qxc4 Rcd1+ 4. Kc3 Rc1+ 5. Kb3 Rb1+ 6.
Ka3 Ra1+ 7. Qa2 Rxa2+ 8. Kxa2 Re8 9. h8=Q Qe6+) (1. h8=Q Rac1+ 2. Kxd2 Nc4+ 3.
Qxc4 Rcd1+ 4. Kc3 Rc1+ 5. Kb3 (5. Kd4 Rxc4+ 6. Kxc4 Re8) 5... Rb1+ 6. Ka3 Ra1+
7. Qa2 Rxa2+ 8. Kxa2 Re8 9. g8=Q Rxg8 10. Qf6 (10. Qe5 Qb7 11. Qxg5 Qxc7 12.
Qd5+ Ka7 13. Qxg8 Qc2+ 14. Ka3 Qc3+ 15. Qb3 Qa1+ 16. Qa2 Qc3+) 10... Qxc7 11.
Qxa6+ Kb8 12. Kb3 Rf8) 1... Ka7 (1... Rac1+ 2. Kxd2 Nc4+ 3. Qgxc4 Red1+ 4. Qxd1
Rxc4 5. Qf3+ Ka7 6. Qe3+) 2. Qxc8 (2. h8=Q d1=Q 3. Qd4+ Qxd4+ 4. Kxd4 Qxg4+)
2... Rac1+ 3. Kxd2 (3. Kd4 d1=Q+ 4. Qxd1 Rcxd1+ 5. Kc3 Rc1+ 6. Kd4 Rcd1+) 3...
Nc4+ 4. Kd3 (4. Qxc4 Rcd1+ 5. Kc3 Re3+ 6. Kc2 Re2+ 7. Qxe2 Rd2+ 8. Kc3 Rd3+ 9.
Kc4 Rd4+ 10. Kc5 Rd5+ 11. Kc6 Rd6+ 12. Kxd6) 4... Ne5+ 5. Kd4 Nc6+ 6. Kd5 Ne7+
7. Kd6 Nxc8+ 8. Kd5 (8. Kd7 Re7+ 9. Kd8 Rcxc7) 8... Rcd1+ (8... Ne7+ 9. Kd4
Nc6+ (9... Rxh1 10. b5 Rxh7 11. Qe3 Rxc7 12. b6+) 10. Kd3 Ne5+ 11. Kd2 Nc4+ 12.
Qxc4 Rcd1+ 13. Kc3 Rc1+ 14. Kb3 &#40;14. Kd4 Rxc4+ &#123;<or>&#125; 15. Kxc4 Rxh1&#41; 14... Rb1+
15. Ka3 Ra1+ 16. Qa2 Rxa2+ 17. Kxa2 Rxh1 &#40;17... Re8 18. b5 Kb7 19. b6 Rh8 20.
Ng3 Rxh7 21. Ne4&#41; 18. c8=R $1 &#40;18. c8=Q Ra1+ 19. Kxa1&#41;) 9. Kc5 Rc1+ &#40;9... Rd7
10. h8=Q Rc1+ 11. Qhc3 Rxc3+ 12. Qxc3 Rxc7+ 13. Kd4 Rxc3 14. Kxc3&#41; 10. Kd4
Rcd1+ 11. Kc3 Re3+ 12. Kc2 Rxb3 &#40;12... Rc3+) 13. h8=Q &#40;13. h8=Q Rbd3 &#123;1.50/17
Houdini 3 Pro x64&#125;) 13... Rbd3 14. Qh2 Rd5 15. Qf2+ &#40;15. Qf2+ &#123;1.84/31
Stockfish 8 64&#125;) 15... Kb7 16. Ng3 R1d4 &#40;16... R1d3&#41; 17. Qf3 Nd6 18. Ne2 Rd2+
19. Kc3 Kxc7 20. Qe3 *
Last edited by Nordlandia on Fri Feb 17, 2017 3:36 pm, edited 1 time in total.
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S.Taylor
Posts: 8514
Joined: Thu Mar 09, 2006 3:25 am
Location: Jerusalem Israel

Re: Difficult position for Stockfish

Post by S.Taylor »

Paloma wrote:Hmm, I have here matt in 24. 8-)

Forward / backward with DeepShredder13 without TB's

[pgn]
[Event "Quirky"]
[Site "?"]
[Date "2014.06.26"]
[Round "?"]
[White "Quirky 16"]
[Black "?"]
[Result "0-1"]
[Annotator "?"]
[SetUp "1"]
[FEN "6Q1/8/3p4/2pPk1p1/1p5P/1P4PK/2q5/8 b - - 0 1"]
[PlyCount "11"]

1... g4+ $1 2. Qxg4 Qf5 3. h5 (3. Qxf5+ Kxf5 4. g4+ Kg6 5. Kg3 c4 6. bxc4 b3) 3... Qxg4+ 4. Kxg4 c4 5. bxc4 b3
6. h6 Kf6 0-1
[/pgn]

1... g4+ $1 {24#} 2. Qxg4 Qf5 3. h5 (3. Qxf5+ Kxf5 {21#} 4. g4+ Kg6 {20#} 5. Kg3 c4 6. bxc4 b3 {18#})
3... Qxg4+ {22#} 4. Kxg4 c4 {21#} 5. bxc4 b3 6. h6 Kf6 {19#} 0-1
Mate hardly matters. The main thing is that black is a move ahead and gets back just in time to stop white queening.
I'd be surprised if SF failed to win just because he didn't see the actual mate.
1...g4! does look quite important.
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flok

Re: Difficult position for Stockfish

Post by flok »

Embla 0.9.8:

Code: Select all

info depth 1 seldepth 7 score cp 94 time 1 nodes 21 pv g5h4
info depth 2 seldepth 10 score cp 86 time 1 nodes 283 pv c2f5 h3h2 f5c2 h2g1 g5h4
info depth 3 seldepth 12 score cp 86 ebf 4.68 time 2 nodes 742 pv c2f5 h3h2 f5c2 h2g1 g5h4
info depth 4 seldepth 15 score cp 86 ebf 2.03 time 5 nodes 1819 pv c2f5 h3h2 f5c2 h2g1 c2b1 g1h2 b1b2 h2g1 g5h4
info depth 5 seldepth 16 score cp 86 ebf 2.54 time 15 nodes 4783 pv c2f5 h3h2 f5c2 h2g1 c2b1 g1h2 b1b2 h2g1 g5h4
info depth 6 seldepth 19 score cp 91 ebf 3.06 time 40 nodes 14851 pv c2f5 h3h2 g5h4 g8h8 e5d5 h8a8 d5e5 a8a1 e5e6 g3h4
info depth 7 seldepth 23 score cp 82 ebf 2.30 time 75 nodes 30560 pv c2f5 h3h2 g5h4 g3h4 f5c2 h2g1 c2d1 g1g2 d1d2 g2g1 d2d4 g1h2 d4h4 h2g1
info depth 8 seldepth 26 score cp 75 ebf 1.66 time 134 nodes 58155 pv c2f5 h3h2 g5h4 g3h4 f5c2 g8g2 c2g2 h2g2 e5d5
info depth 9 seldepth 28 score cp 85 ebf 3.52 time 567 nodes 252438 pv g5h4 h3h4 c2e4 g3g4 e4d5 g8d5 e5d5 g4g5 c5c4 b3c4 d5c4 g5g6
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BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: Difficult position for Stockfish

Post by BBauer »

IMHO this is not difficult for SF.

At least 3 moves lead to a win.
1. ... g4
1. ... Qf5
1. ... gxh4
SF will choose a winning continuation and win without any problems,

Kind regars
Bernhard
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User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Difficult position for Stockfish

Post by Nordlandia »

[d]6N1/Rp4p1/3q3p/1B3P1k/5P2/5K2/1P1r1N1P/8 w - - 0 0

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6N1/Rp4p1/3q3p/1B3P1k/5P2/5K2/1P1r1N1P/8 w - - 0 0"]
[PlyCount "15"]

1. Be2 Qd5+ 2. Ke3+ Kh4 3. Ne7 Qd4+ 4. Kf3 Rxe2 5. Kxe2 Qxa7 6. Ng6+ Kh5 7. Ne5
Qd4 8. Ned3 *

[/pgn]
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Difficult position for Stockfish

Post by Vinvin »

Jouni wrote:[D]6Q1/8/3p4/2pPk1p1/1p5P/1P4PK/2q5/8 b - - 0 1

Well-known from many test suites. Houdini and Komodo find mating -g4+ almost instantly, but SF8 not in 5 minutes. I gave up :) .
With enough time, SF would probably finds a mate score for g4+ and Qf5+

Code: Select all

Stockfish_170214_x64_modern_fast&#58;
...
 38/108	00&#58;40	 778 677k	19 171k	-61,44	1. ... Qf5+ 2.Kg2 g4 3.Qg7+ Ke4 4.Kg1 Qf3 5.Qe7+ Kxd5 6.Qe1 Qc3 7.Qf2 Qd4 8.h5 Qxf2+ 9.Kxf2 Ke5 10.h6 Kf6 11.h7 Kg7 12.h8R Kxh8 13.Ke3 Kh7 14.Ke4 Kg6 15.Kd3 Kh5 16.Kc2 Kg5 17.Kd2 Kf5 18.Kd3 Ke5 19.Kc4 Ke4 20.Kb5 Kd5 21.Ka5 Kc6 22.Ka6 c4 23.bxc4 Kc5 24.Ka5 b3
 39/108	00&#58;40	 778 677k	19 171k	-M29	1. ... g4+ 2.Qxg4 Qf5 3.h5 Qxg4+ 4.Kxg4 c4 5.h6 Kf6 6.bxc4 b3 7.c5 b2 8.h7 Kg7 9.cxd6 b1Q 10.Kf4 Kxh7 11.d7 Qb4+ 12.Kf5 Qe7 13.d8N Qxd8 14.Ke5 Qg5+ 15.Ke4 Qxg3 16.Kd4 Kg7 17.Kc4 Kg6 18.Kd4 Kf6 19.Ke4 Qb3 20.Kd4 Qd1+ 21.Ke4 Qd2 22.Kf3 Qxd5+ 23.Kg3 Ke5 24.Kf2 Qd2+ 25.Kg3 Kf6 26.Kf3 Kf5 27.Kg3 Qe2
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