Black to play and win

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Ted Summers
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Black to play and win

Post by Ted Summers »

[fen]8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 0[/fen]

Position No. 5961: Black to play and win.
From the game Darmen Sadvakasov-Chanda Sandipan
World Open, Pennsylvania 2007

As posted in the Chess section of the LA Times Online. Hiarcs 11.2 says it's mate in 15. Very cute Tactics, and a nice win.

Analysis by HIARCS 11.2 SP:

1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh7+ Kxh7 11.Bd3+ Kh8 12.Bb5 Rxb5 13.Rd8+ Kg7 14.Rg8+ Kxg8
-+ (-#15) Depth: 29/31 00:00:52 16948kN, tb=10
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George Tsavdaris
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Posts: 40
Joined: Tue Jul 31, 2007 8:23 pm

Re: Black to play and win

Post by George Tsavdaris »

Ted Summers wrote:8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 0

Position No. 5961: Black to play and win.
From the game Darmen Sadvakasov-Chanda Sandipan
World Open, Pennsylvania 2007

As posted in the Chess section of the LA Times Online. Hiarcs 11.2 says it's mate in 15. Very cute Tactics, and a nice win.

Analysis by HIARCS 11.2 SP:

1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh7+ Kxh7 11.Bd3+ Kh8 12.Bb5 Rxb5 13.Rd8+ Kg7 14.Rg8+ Kxg8
-+ (-#15) Depth: 29/31 00:00:52 16948kN, tb=10
Chessmaster 9000 a program so old compared to the monsters of today, still shines in finding mates really fast:

Analysis by CM9000-XQ9:

1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-c3+ 4.Rd1-d2 Rf6-d6 5.Qh3-g4 Qc3xd2+ 6.Ke1-f2 Rd6-d4 7.Qg4-f5 Rd4xa4
-+ (-2.88) Depth: 8 00:00:00 277kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Rf6-f2+ 4.Kg2-h3 Rf2xe2 5.Qh5-h8+ Kg7-g6 6.Rd8-g8+ Kg6-f5 7.Qh8-h7+ Kf5-e5 8.Qh7-g7+ f7-f6 9.Qg7-c7+ Ke5-d4
-+ (-3.24) Depth: 8 00:00:01 537kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Bb3-d5+ 4.Rd8xd5 Rf6-f2+ 5.Kg2-h3 Qe3-e6+ 6.Be2-g4 Qe6xd5 7.Bg4-f3 Qd5xf3 8.Qh5xg5+ Kg7-h7 9.Qg5xa5
-+ (-3.21) Depth: 9 00:00:01 879kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Bb3-d5+ 4.Rd8xd5 Rf6-f2+ 5.Kg2-h3 Qe3-e6+ 6.Qh5-g4 Qe6xd5 7.Be2-f3 Qd5xf3 8.Qg4xg5+ Kg7-h7 9.Qg5xa5 Qf3-g2+ 10.Kh3-g4 Qg2xh2
-+ (-3.46) Depth: 10 00:00:03 1686kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-c2 Rd6-c6+ 8.Be2-c4 Rc6xc4+ 9.Kc2-d3 Qb4-c3+ 10.Kd3-e2 Rc4-e4+ 11.Ke2-f2 Qc3-c2+ 12.Kf2-g1 Qc2xd1+ 13.Qh3-f1 Qd1xf1+ 14.Kg1xf1 Re4xa4
-+ (-7.83) Depth: 10 00:00:04 2192kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-a1 Qb4xa4+ 8.Ka1-b2 Qa4-b4+ 9.Kb2-a2 Rd6-b6 10.Qh3-h8+ Kg7xh8 11.Rd1-d8+ Kh8-g7 12.Be2-b5 Rb6xb5 13.Rd8-g8+ Kg7xg8
-+ (-18.61) Depth: 11 00:00:11 6026kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-a1 Qb4xa4+ 8.Ka1-b2 Qa4-b4+ 9.Kb2-a2 Rd6-b6 10.Qh3-h8+ Kg7xh8 11.Rd1-d8+ Kh8-g7 12.Be2-b5 Rb6xb5 13.Rd8-g8+ Kg7xg8 14.h2-h3 Qb4-b2#
-+ (-99.73) Depth: 12 00:00:26 15134kN
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Ted Summers
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Re: Black to play and win

Post by Ted Summers »

George Tsavdaris wrote:
Ted Summers wrote:8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 0

Position No. 5961: Black to play and win.
From the game Darmen Sadvakasov-Chanda Sandipan
World Open, Pennsylvania 2007

As posted in the Chess section of the LA Times Online. Hiarcs 11.2 says it's mate in 15. Very cute Tactics, and a nice win.

Analysis by HIARCS 11.2 SP:

1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh7+ Kxh7 11.Bd3+ Kh8 12.Bb5 Rxb5 13.Rd8+ Kg7 14.Rg8+ Kxg8
-+ (-#15) Depth: 29/31 00:00:52 16948kN, tb=10
Chessmaster 9000 a program so old compared to the monsters of today, still shines in finding mates really fast:

Analysis by CM9000-XQ9:

1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-c3+ 4.Rd1-d2 Rf6-d6 5.Qh3-g4 Qc3xd2+ 6.Ke1-f2 Rd6-d4 7.Qg4-f5 Rd4xa4
-+ (-2.88) Depth: 8 00:00:00 277kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Rf6-f2+ 4.Kg2-h3 Rf2xe2 5.Qh5-h8+ Kg7-g6 6.Rd8-g8+ Kg6-f5 7.Qh8-h7+ Kf5-e5 8.Qh7-g7+ f7-f6 9.Qg7-c7+ Ke5-d4
-+ (-3.24) Depth: 8 00:00:01 537kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Bb3-d5+ 4.Rd8xd5 Rf6-f2+ 5.Kg2-h3 Qe3-e6+ 6.Be2-g4 Qe6xd5 7.Bg4-f3 Qd5xf3 8.Qh5xg5+ Kg7-h7 9.Qg5xa5
-+ (-3.21) Depth: 9 00:00:01 879kN
1...Be6-b3 2.Rd1-d8 Rb6-f6+ 3.Kf1-g2 Bb3-d5+ 4.Rd8xd5 Rf6-f2+ 5.Kg2-h3 Qe3-e6+ 6.Qh5-g4 Qe6xd5 7.Be2-f3 Qd5xf3 8.Qg4xg5+ Kg7-h7 9.Qg5xa5 Qf3-g2+ 10.Kh3-g4 Qg2xh2
-+ (-3.46) Depth: 10 00:00:03 1686kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-c2 Rd6-c6+ 8.Be2-c4 Rc6xc4+ 9.Kc2-d3 Qb4-c3+ 10.Kd3-e2 Rc4-e4+ 11.Ke2-f2 Qc3-c2+ 12.Kf2-g1 Qc2xd1+ 13.Qh3-f1 Qd1xf1+ 14.Kg1xf1 Re4xa4
-+ (-7.83) Depth: 10 00:00:04 2192kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-a1 Qb4xa4+ 8.Ka1-b2 Qa4-b4+ 9.Kb2-a2 Rd6-b6 10.Qh3-h8+ Kg7xh8 11.Rd1-d8+ Kh8-g7 12.Be2-b5 Rb6xb5 13.Rd8-g8+ Kg7xg8
-+ (-18.61) Depth: 11 00:00:11 6026kN
1...Be6-h3+ 2.Qh5xh3 Rb6-f6+ 3.Kf1-e1 Qe3-f2+ 4.Ke1-d2 Rf6-d6+ 5.Kd2-c3 Qf2-c5+ 6.Kc3-b2 Qc5-b4+ 7.Kb2-a1 Qb4xa4+ 8.Ka1-b2 Qa4-b4+ 9.Kb2-a2 Rd6-b6 10.Qh3-h8+ Kg7xh8 11.Rd1-d8+ Kh8-g7 12.Be2-b5 Rb6xb5 13.Rd8-g8+ Kg7xg8 14.h2-h3 Qb4-b2#
-+ (-99.73) Depth: 12 00:00:26 15134kN
Yes, Very Impressive! :D
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Peter Grayson
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Joined: Sat Aug 04, 2007 3:23 pm
Location: South Wales, UK

Re: Black to play and win

Post by Peter Grayson »

Ted Summers wrote:[fen]8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 0[/fen]

Position No. 5961: Black to play and win.
From the game Darmen Sadvakasov-Chanda Sandipan
World Open, Pennsylvania 2007

As posted in the Chess section of the LA Times Online. Hiarcs 11.2 says it's mate in 15. Very cute Tactics, and a nice win.

Analysis by HIARCS 11.2 SP:

1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh7+ Kxh7 11.Bd3+ Kh8 12.Bb5 Rxb5 13.Rd8+ Kg7 14.Rg8+ Kxg8
-+ (-#15) Depth: 29/31 00:00:52 16948kN, tb=10
Hiarcs 11.2 mp announced M14 in DJ10 CB GUI9 with move deviation at move 10. Bb5 instead of 10.Qh7+ so was analysis allowed to run long enough on SP version?

New game
8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 1

Analysis by HIARCS 11.2 MP:

1...Bb3 2.Rd3 Rf6+ 3.Kg2 Qf2+ 4.Kh1 Qe1+ 5.Kg2 Rf2+ 6.Kh3 Be6+ 7.g4 Rxh2+ 8.Kxh2 Qxe2+ 9.Kg1 Qxd3 10.Qxg5+ Qg6
-+ (-4.03) Depth: 10/31 00:00:00 348kN
1...Bb3 2.Rd8 Rf6+ 3.Kg2 Rf2+ 4.Kh3 Rxe2 5.Qh8+ Kg6 6.Qg8+ Kf6 7.Qh8+ Kf5 8.Qh7+ Ke5 9.Qg7+
-+ (-3.94) Depth: 10/32 00:00:00 540kN
1...Bh3+
-+ (-3.96) Depth: 10/32 00:00:01 815kN
1...Bh3+
-+ (-4.28) Depth: 10/32 00:00:01 821kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8
-+ (-8.70) Depth: 10/32 00:00:01 1185kN
1...Bh3+
-+ (-8.95) Depth: 11/34 00:00:01 1377kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Bb5 Rxb5
-+ (-11.78) Depth: 11/34 00:00:02 1988kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh6+ Kxh6 11.Bb5 Rxb5
-+ (-11.83) Depth: 12/35 00:00:03 3257kN
1...Bh3+
-+ (-12.08) Depth: 13/35 00:00:04 4032kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh8+ Kxh8
-+ (-12.08) Depth: 13/37 00:00:05 5643kN, tb=1
1...Bh3+
-+ (-12.33) Depth: 14/38 00:00:09 9383kN, tb=1
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6
-+ (-19.97) Depth: 14/41 00:00:26 30070kN, tb=2
1...Bh3+
-+ (-20.22) Depth: 15/41 00:00:48 56331kN, tb=15
1...Bh3+
-+ (-#30) Depth: 15/41 00:00:59 72532kN, tb=18
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+
-+ (-#14) Depth: 15/41 00:01:14 91689kN, tb=34
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+
-+ (-#14) Depth: 16/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 17/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 18/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 19/41 00:01:26 104mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 20/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 21/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 22/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 23/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 24/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 25/41 00:01:27 106mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 26/41 00:01:27 106mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 27/41 00:01:27 106mN, tb=35

(Grayson, 06.08.2007)

PeterG
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Mark Uniacke
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Post by Mark Uniacke »

Nice combination, thanks for posting it.

The King and Hiarcs have always played these king hunt tactics well. I quite like them too :wink:
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Ted Summers
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Re: Black to play and win

Post by Ted Summers »

Peter Grayson wrote:
Ted Summers wrote:[fen]8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 0[/fen]

Position No. 5961: Black to play and win.
From the game Darmen Sadvakasov-Chanda Sandipan
World Open, Pennsylvania 2007

As posted in the Chess section of the LA Times Online. Hiarcs 11.2 says it's mate in 15. Very cute Tactics, and a nice win.

Analysis by HIARCS 11.2 SP:

1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh7+ Kxh7 11.Bd3+ Kh8 12.Bb5 Rxb5 13.Rd8+ Kg7 14.Rg8+ Kxg8
-+ (-#15) Depth: 29/31 00:00:52 16948kN, tb=10
Hiarcs 11.2 mp announced M14 in DJ10 CB GUI9 with move deviation at move 10. Bb5 instead of 10.Qh7+ so was analysis allowed to run long enough on SP version?

New game
8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 1

Analysis by HIARCS 11.2 MP:

1...Bb3 2.Rd3 Rf6+ 3.Kg2 Qf2+ 4.Kh1 Qe1+ 5.Kg2 Rf2+ 6.Kh3 Be6+ 7.g4 Rxh2+ 8.Kxh2 Qxe2+ 9.Kg1 Qxd3 10.Qxg5+ Qg6
-+ (-4.03) Depth: 10/31 00:00:00 348kN
1...Bb3 2.Rd8 Rf6+ 3.Kg2 Rf2+ 4.Kh3 Rxe2 5.Qh8+ Kg6 6.Qg8+ Kf6 7.Qh8+ Kf5 8.Qh7+ Ke5 9.Qg7+
-+ (-3.94) Depth: 10/32 00:00:00 540kN
1...Bh3+
-+ (-3.96) Depth: 10/32 00:00:01 815kN
1...Bh3+
-+ (-4.28) Depth: 10/32 00:00:01 821kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8
-+ (-8.70) Depth: 10/32 00:00:01 1185kN
1...Bh3+
-+ (-8.95) Depth: 11/34 00:00:01 1377kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Bb5 Rxb5
-+ (-11.78) Depth: 11/34 00:00:02 1988kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh6+ Kxh6 11.Bb5 Rxb5
-+ (-11.83) Depth: 12/35 00:00:03 3257kN
1...Bh3+
-+ (-12.08) Depth: 13/35 00:00:04 4032kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh8+ Kxh8
-+ (-12.08) Depth: 13/37 00:00:05 5643kN, tb=1
1...Bh3+
-+ (-12.33) Depth: 14/38 00:00:09 9383kN, tb=1
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6
-+ (-19.97) Depth: 14/41 00:00:26 30070kN, tb=2
1...Bh3+
-+ (-20.22) Depth: 15/41 00:00:48 56331kN, tb=15
1...Bh3+
-+ (-#30) Depth: 15/41 00:00:59 72532kN, tb=18
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+
-+ (-#14) Depth: 15/41 00:01:14 91689kN, tb=34
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+
-+ (-#14) Depth: 16/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 17/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 18/41 00:01:25 103mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 19/41 00:01:26 104mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 20/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 21/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 22/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 23/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 24/41 00:01:26 105mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 25/41 00:01:27 106mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 26/41 00:01:27 106mN, tb=35
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kh7 13.Rh6+ Kxh6
-+ (-#14) Depth: 27/41 00:01:27 106mN, tb=35

(Grayson, 06.08.2007)

PeterG
Hi Peter,

I guess not, after it hit mate in 15 it seem to stay locked in on that mate. Now I wonder how long would SP version that to locate the Mate in 14. I will have to re-test it to find out.

Thanks
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Peter Grayson
Member
Posts: 207
Joined: Sat Aug 04, 2007 3:23 pm
Location: South Wales, UK

Re: Black to play and win

Post by Peter Grayson »

Hi Peter,

I guess not, after it hit mate in 15 it seem to stay locked in on that mate. Now I wonder how long would SP version that to locate the Mate in 14. I will have to re-test it to find out.

Thanks
Hi Ted,
Maybe not enough hash. I ran test with 512Mb Hash. Ran test with SP version on same machine and it wasn't too far behind MP engine although it needed an extra 2 ply! Seems like the extended search depth was most important here.

New game
8/5pk1/1r2b3/p5pQ/P7/4q1P1/4B2P/3R1K2 b - - 0 1

Analysis by HIARCS 11.2 SP:

1...Bb3
-+ (-3.92) Depth: 9/27 00:00:00 186kN
1...Bb3
-+ (-3.92) Depth: 9/27 00:00:00 186kN
1...Bb3 2.Rd3 Rf6+ 3.Kg2 Qf2+ 4.Kh1 Qe1+ 5.Kg2 Rf2+ 6.Kh3 Be6+ 7.g4 Rxh2+ 8.Kxh2 Qxe2+ 9.Kg1 Qxd3 10.Qxg5+ Qg6
-+ (-4.03) Depth: 9/27 00:00:00 212kN
1...Bb3
-+ (-3.78) Depth: 10/31 00:00:01 493kN
1...Bb3 2.Rd8 Rf6+ 3.Kg2 Bd5+
-+ (-3.78) Depth: 10/31 00:00:01 556kN
1...Bh3+
-+ (-3.79) Depth: 10/32 00:00:01 849kN
1...Bh3+
-+ (-4.28) Depth: 10/32 00:00:02 857kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8
-+ (-8.68) Depth: 10/32 00:00:02 1033kN
1...Bh3+
-+ (-8.93) Depth: 11/34 00:00:02 1180kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Bb5 Rxb5
-+ (-11.78) Depth: 11/35 00:00:03 1695kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Bb5 Rxb5 12.Rd8+ Kg7
-+ (-11.87) Depth: 12/35 00:00:05 2877kN
1...Bh3+
-+ (-12.12) Depth: 13/37 00:00:06 3563kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Rd8+ Kg7 12.Rg8+ Kxg8
-+ (-17.96) Depth: 13/38 00:00:17 10174kN
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Qh8+ Kxh8 11.Bb5 Rxb5
-+ (-18.16) Depth: 14/41 00:00:33 20019kN
1...Bh3+
-+ (-18.41) Depth: 15/41 00:00:46 28261kN, tb=2
1...Bh3+
-+ (-#29) Depth: 15/41 00:01:07 44293kN, tb=2
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb3 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6
-+ (-#15) Depth: 15/41 00:01:21 53286kN, tb=3
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+
-+ (-#15) Depth: 16/41 00:01:43 66326kN, tb=3
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+ Kxg6
-+ (-#14) Depth: 17/41 00:02:08 85625kN, tb=26
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+ Kxg6
-+ (-#14) Depth: 18/41 00:02:09 85955kN, tb=26
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+ Kxg6
-+ (-#14) Depth: 19/41 00:02:09 86207kN, tb=26
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+ Kxg6
-+ (-#14) Depth: 20/41 00:02:09 86545kN, tb=26
1...Bh3+ 2.Qxh3 Rf6+ 3.Ke1 Qf2+ 4.Kd2 Rd6+ 5.Kc3 Qc5+ 6.Kb2 Qb4+ 7.Ka2 Qxa4+ 8.Kb2 Qb4+ 9.Ka2 Rb6 10.Bb5 Rxb5 11.Qh6+ Kxh6 12.Rd6+ Kg7 13.Rg6+ Kxg6
-+ (-#14) Depth: 21/41 00:02:10 86784kN, tb=26

(Grayson, 10.08.2007)

PeterG
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