Author: Dann Corbit
Date: 11:59:59 04/25/05
Go up one level in this thread
On April 25, 2005 at 13:22:57, Steven Edwards wrote:
>A one hour per position analysis of the BWTC test suite has been made available
>for download:
>
> http://www.geocities.com/chessnotation/Analysis/BWTC-3600.epd.gz
>
>Of the 1001 positions, Symbolic's toolkit solved 995 and missed six. In 979 of
>the solved problems a forced mating sequence was located.
>
>In five of the six unsolved positions, the toolkit realized a clear advantage of
>from about 2 pawns upto 12+ pawns.
>
>The remaining unsolved position was BWTC.0640:
>
>rn3rk1/pp3ppp/3b1n2/2pPq3/2B1P3/1NN2bP1/PPPQ1P1P/R1B2RK1 b - - 0 1
>
>It looks like Black's Q+B+N attack on the kingside is deadly, but it seems that
>White can always come up with a defense. The evaluation for the above was about
>-1.7 pawns for Black.
It seems that there may be a new solution for one of the positions.
It will be interesting to analyze these at longer time control with Shredder.
Shredder 10 minutes analysis for the positions where a checkmate was not found:
Shredder 9.02 UCI by Stefan Meyer-Kahlen, www.shredderchess.com
CPU0: AuthenticAMD x86 Family 15 Model 4 Stepping 10 2202 MHz
GUI: Tablebases with 5 pieces found! [Cache: 16 MB + internal 13.67 MB]
Engine: Shredder 9 UCI (2 MB)
by Stefan Meyer-Kahlen
Position: acd 12; acn 433094656; acs 3503; bm Qxb7+; id BWTC.0057; pes +8.711;
pm Bxc6; pv Bxc6 bxc6 Qxc6 Kd8 Ra8+ Bc8 Rxc8+ Kxc8 Ra1 Qb4 Ra8+ Qb8 Qe6+ Rd7
Qa6+ Kd8 Rxb
[D]2k4r/1pp1q1p1/2n1b3/1Q3p1p/2Pr2n1/6P1/3NPPBP/R4RK1 w - -
+---+---+---+---+---+---+---+---+
8 | |:::|*K*|:::| |:::| |*R*
+---+---+---+---+---+---+---+---+
7 |:::|*P*|*P*| |*Q*| |*P*|
+---+---+---+---+---+---+---+---+
6 | |:::|*N*|:::|*B*|:::| |:::
+---+---+---+---+---+---+---+---+
5 |:::| Q |:::| |:::|*P*|:::|*P*
+---+---+---+---+---+---+---+---+
4 | |:::| P |*R*| |:::|*N*|:::
+---+---+---+---+---+---+---+---+
3 |:::| |:::| |:::| | P |
+---+---+---+---+---+---+---+---+
2 | |:::| | N | P | P | B | P
+---+---+---+---+---+---+---+---+
1 | R | |:::| |:::| R | K |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Qb5xb7! Bg2xc6!
10/32 0:01 +5.83 1.Nb3 Kd8 2.Ra8+ Bc8 3.Qxb7 Qe6 4.Nc5 Ke7 5.Qxc7+ Rd7
6.Nxd7 Qxd7 7.Qxc6 Qxc6 8.Bxc6 Rd8 (998.043) 511
10/32 0:02 +5.84++ 1.Bxc6 (1.055.946) 512
10/32 0:02 +6.19++ 1.Bxc6 (1.065.616) 512
10/32 0:02 +9.53 1.Bxc6 bxc6 2.Qxc6 (1.241.598) 516
11/37 0:02 +9.78++ 1.Bxc6 bxc6 (1.320.021) 524
11/37 0:02 +10.28++ 1.Bxc6 bxc6 (1.323.834) 526
11/37 0:02 +10.70 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
(1.628.529) 545
12/32 0:03 +10.95++ 1.Bxc6 bxc6 (1.735.123) 552
12/39 0:04 +11.02 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Rxd2 11.Qg6 Nf6 12.Qxg7+
Ke6 13.Qxc7 Rxe2 (2.569.836) 585
13/41 0:05 +11.19 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Rxd2 11.Qg6 Nf6 12.Qxg7+
Ke6 13.Rf8 Rd1+ (3.619.516) 614
14/43 0:10 +11.44++ 1.Bxc6 bxc6 (6.587.580) 611
14/43 0:10 +11.94++ 1.Bxc6 bxc6 (6.617.841) 612
14/45 0:19 +12.34 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Rxd2 11.Qg6 Nf6 12.Qxg7+
Ke6 13.Qxc7 Rxe2 14.Qb6+ (11.982.786) 615
15/45 0:21 +12.59++ 1.Bxc6 bxc6 (12.951.788) 615
15/45 0:21 +13.09++ 1.Bxc6 bxc6 (13.065.616) 614
15/46 0:36 +15.54 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 h4 11.Qg6 Nf6 12.Qxg7+ Ke6
13.Qg5 hxg3 14.fxg3 (22.609.894) 618
16/50 1:06 +15.78 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Nf6 11.Nf3 Rd6 (42.744.607)
647
17/50 1:13 +16.03++ 1.Bxc6 bxc6 (47.169.413) 645
17/52 2:41 +16.47 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Rd8 11.Rxd8 Kxd8 12.Qg6 Nf6
(109.456.832) 677
18/52 2:58 +16.72++ 1.Bxc6 bxc6 (120.706.802) 674
18/54 7:03 +17.20 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 h4 11.Qg6 Nf6 12.Nf3 Ke6
(291.514.396) 688
19/56 15:39 +17.44 1.Bxc6 bxc6 2.Qxc6 Kd8 3.Ra8+ Bc8 4.Rxc8+ Kxc8 5.Ra1 Qb4
6.Ra8+ Qb8 7.Qe6+ Rd7 8.Qa6+ Kd8 9.Rxb8+ Ke7 10.Rxh8 Rd8 11.Rxd8 Kxd8 12.Qg6
Nxf2 (644.883.464) 686
best move: Bg2xc6 time: 15:39.937 min n/s: 686.092 CPU 99.1% n/s(1CPU):
692.322 nodes: 644.883.464
Right solution! (0:02.062) 10
Right until now: 1 of 1 ; 2s
Position: acd 9; acn 382550016; acs 3507; bm Qxh6+; id BWTC.0134; pes +4.754;
pm Nxh7; pv Nxh7 Ng4 Ng5 Nh6 Ne6+ Bxe6 Bxh6+ Kg8 Nf6+ Qxf6 Rxf6 c1=Q+ Rxc1 Bd4
Bxf8 Bxc4 R
[D]r1bq1r2/ppp2pkp/3p2nn/2bN2NQ/2B1P3/8/PPp3PP/R1B2R1K w - -
+---+---+---+---+---+---+---+---+
8 |*R*|:::|*B*|*Q*| |*R*| |:::
+---+---+---+---+---+---+---+---+
7 |*P*|*P*|*P*| |:::|*P*|*K*|*P*
+---+---+---+---+---+---+---+---+
6 | |:::| |*P*| |:::|*N*|*N*
+---+---+---+---+---+---+---+---+
5 |:::| |*B*| N |:::| | N | Q
+---+---+---+---+---+---+---+---+
4 | |:::| B |:::| P |:::| |:::
+---+---+---+---+---+---+---+---+
3 |:::| |:::| |:::| |:::|
+---+---+---+---+---+---+---+---+
2 | P | P |*P*|:::| |:::| P | P
+---+---+---+---+---+---+---+---+
1 | R | | B | |:::| R |:::| K
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Qh5xh6! Ng5xh7!
10/30 0:01 +5.33 1.Nxh7 Ng4 2.Bg5 Qd7 3.Ndf6 Qa4 4.Nxf8 Kxf8 5.Nh7+ Kg7
6.Rxf7+ Kh8 (708.980) 553
10/30 0:02 +5.34++ 1.Rf6 (1.247.050) 566
10/30 0:02 +5.69++ 1.Rf6 (1.275.888) 563
10/35 0:03 +6.57 1.Rf6 Qxf6 2.Nxf6 Rh8 3.Bd2 Bd4 4.Ngxh7 Ng4 5.Qd5 Nf2+
6.Kg1 Nh3+ 7.Kh1 (1.962.102) 553
11/35 0:04 +6.82++ 1.Rf6 Qxf6 (2.298.024) 550
11/35 0:04 +7.22 1.Rf6 Qxf6 2.Nxf6 Rh8 3.Bb3 Bd4 4.Ngxh7 Rxh7 5.Nxh7 Ng4
6.Bxc2 Nf2+ 7.Kg1 Nd3+ 8.Kf1 Nxc1 (2.733.705) 557
12/37 0:08 +7.46 1.Rf6 Qxf6 2.Nxf6 Rh8 3.Bb3 a6 4.Bxc2 Kxf6 5.Qxh6 Ke7
(4.695.472) 573
13/43 0:17 +7.70 1.Rf6 Qxf6 2.Nxf6 Rh8 3.Bb3 Bb6 4.Qf3 (9.515.879) 536
14/38 0:29 +7.95++ 1.Rf6 Qxf6 (16.352.103) 549
14/42 0:34 +7.95 1.Rf6 Qxf6 2.Nxf6 Rh8 3.Bb3 c6 (19.118.434) 559
14/45 0:44 +7.96++ 1.Nf6 (25.768.368) 573
14/45 0:47 +8.31++ 1.Nf6 (27.058.983) 570
14/48 2:33 +10.88 1.Nf6 Qxf6 2.Rxf6 Kxf6 3.Nxh7+ Ke7 4.Bg5+ Kd7 5.Nxf8+ Nxf8
6.Bxh6 Kc6 7.Bxf8 Be6 8.Bxe6 fxe6 9.Qh6 (90.827.513) 589
15/40 2:47 +11.13++ 1.Nf6 Qxf6 (98.665.872) 589
15/48 3:15 +11.19 1.Nf6 Qxf6 2.Rxf6 Kxf6 3.Nxh7+ Ke7 4.Bg5+ Ke8 5.Bxh6 Nf4
(116.149.577) 595
16/44 3:45 +11.44++ 1.Nf6 Qxf6 (135.758.218) 601
16/47 4:05 +11.94++ 1.Nf6 Qxf6 (146.433.409) 596
16/53 5:35 +12.33 1.Nf6 Qxf6 2.Rxf6 Bg4 3.Qxh6+ Kxf6 4.Nxh7+ Ke7 5.Qg5+ Kd7
6.Nxf8+ Rxf8 7.Qxg4+ Kc6 8.Qe2 Kd7 9.Qxc2 Kc8 10.Bh6 Rh8 11.Bg7 Rh7 12.Qc3
(200.251.959) 597
17/56 7:35 +12.34 1.Nf6 Qxf6 2.Rxf6 Bg4 3.Qxh6+ Kxf6 4.Nxh7+ Ke7 5.Qg5+ Kd7
6.Qxg4+ Kc6 7.a4 a5 (274.124.031) 602
best move: Nd5-f6 time: 8:45.797 min n/s: 615.402 CPU 99.0% n/s(1CPU):
621.618 nodes: 323.576.972
Wrong solution!
Right until now: 1 of 2 ; 8:47m
Position: acd 12; acn 442859520; acs 3519; bm Rh4+; id BWTC.0317; pes +1.996;
pm Rf7; pv Rf7 Qxe4 Bxe4 d5 Rxf6+ Kh5 Bxd5 h6 f3 g4 Bf7+ Kh4 Rd6; scv 58:38.81;
solve 0;
[D]r1b4r/pp1pR2p/2q2p1k/6p1/3BR3/2PB4/P1P2PPP/6K1 w - -
+---+---+---+---+---+---+---+---+
8 |*R*|:::|*B*|:::| |:::| |*R*
+---+---+---+---+---+---+---+---+
7 |*P*|*P*|:::|*P*| R | |:::|*P*
+---+---+---+---+---+---+---+---+
6 | |:::|*Q*|:::| |*P*| |*K*
+---+---+---+---+---+---+---+---+
5 |:::| |:::| |:::| |*P*|
+---+---+---+---+---+---+---+---+
4 | |:::| | B | R |:::| |:::
+---+---+---+---+---+---+---+---+
3 |:::| | P | B |:::| |:::|
+---+---+---+---+---+---+---+---+
2 | P |:::| P |:::| | P | P | P
+---+---+---+---+---+---+---+---+
1 |:::| |:::| |:::| | K |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Re4-h4! Re7-f7!
12/26 0:01 +1.07 1.Rf7 Qxe4 2.Bxe4 d5 3.Rxf6+ Kh5 4.Bf3+ g4 5.Bxd5 h6 6.Bf7+
Kh4 7.Rd6 Rh7 (1.083.834) 673
13/32 0:02 +1.32++ 1.Rf7 Qxe4 (1.700.971) 680
13/32 0:03 +1.82++ 1.Rf7 Qxe4 (2.193.798) 678
13/32 0:03 +1.82 1.Rf7 Qxe4 2.Bxe4 d5 3.Bxd5 g4 (2.272.614) 679
14/34 0:06 +2.06 1.Rf7 Qxe4 2.Bxe4 d6 3.Rxf6+ (4.168.184) 684
15/34 0:10 +1.87 1.Rf7 Qxe4 2.Bxe4 d5 3.Rxf6+ Kg7 4.Rd6+ Kf7 5.Bxd5+ Ke7
6.Rh6 Re8 7.Be3 g4 8.Rxh7+ Kd6 9.Bxb7 Bxb7 10.Rxb7 a5 11.c4 (7.394.690) 707
16/37 0:16 +2.12++ 1.Rf7 Qxe4 (12.097.277) 721
16/37 0:18 +2.62++ 1.Rf7 Qxe4 (13.362.048) 716
16/38 0:26 +3.77 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 b5 4.Bxf6 Be6 (18.957.986) 718
17/40 0:36 +3.81 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.Re7
Rae8 7.Rxe6 Rxe6 8.Bxh8 gxf3 9.gxf3 Kg5 10.Bd4 Re1+ (26.883.750) 731
18/40 0:54 +4.06++ 1.Rf7 Qxe4 (40.280.942) 733
18/40 1:00 +4.15 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.Rxb7
Raf8 (44.764.082) 737
19/47 1:52 +4.40++ 1.Rf7 Qxe4 (84.182.721) 745
19/47 2:01 +4.40 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.fxg4+
(91.189.411) 748
20/46 3:19 +4.65++ 1.Rf7 Qxe4 (150.019.264) 751
20/46 3:46 +4.78 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.fxg4+
Bxg4 7.h3 Raf8 8.hxg4+ Kxg4 9.Rg7+ Kf4 10.Bg5+ Ke5 11.Rxb7 a5 12.Bxh7 Rb8
13.Re7+ Kd6 14.Kf2 (170.528.377) 754
21/48 5:56 +5.03++ 1.Rf7 Qxe4 (268.681.121) 754
21/50 6:56 +5.03 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.fxg4+
Kh6 (316.816.504) 759
22/54 12:18 +5.26 1.Rf7 Qxe4 2.Bxe4 d5 3.Bd3 Kh5 4.f3 g4 5.Bxf6 Be6 6.fxg4+
Bxg4 7.h3 Raf8 8.hxg4+ Kxg4 9.Rg7+ Kf4 10.Bd4 Rhg8 11.Rxh7 Rxg2+ (559.903.951)
757
best move: Re7-f7 time: 13:09.484 min n/s: 763.239 CPU 99.4% n/s(1CPU):
767.846 nodes: 602.553.365
Right solution! (0:00.000) 2
Right until now: 2 of 3 ; 8:47m
Position: acd 14; acn 487735296; acs 3518; bm Kh7; id BWTC.0398; pes +2.002; pm
Kg7; pv Kg7 a5 Kh6 axb6 Kh5 b7 Bxb7 b5 hxg2+ Rxg2 Kh4 Bd4; scv 58:37.89; solve
0;
[D]6k1/p4p2/1p2p1p1/4P3/PP2bP2/2B1b2p/6PP/6RK b - -
+---+---+---+---+---+---+---+---+
8 | |:::| |:::| |:::|*K*|:::
+---+---+---+---+---+---+---+---+
7 |*P*| |:::| |:::|*P*|:::|
+---+---+---+---+---+---+---+---+
6 | |*P*| |:::|*P*|:::|*P*|:::
+---+---+---+---+---+---+---+---+
5 |:::| |:::| | P | |:::|
+---+---+---+---+---+---+---+---+
4 | P | P | |:::|*B*| P | |:::
+---+---+---+---+---+---+---+---+
3 |:::| | B | |*B*| |:::|*P*
+---+---+---+---+---+---+---+---+
2 | |:::| |:::| |:::| P | P
+---+---+---+---+---+---+---+---+
1 |:::| |:::| |:::| | R | K
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Kg8-h7! Kg8-g7!
12/19 0:01 +2.21 1...Kg7 2.b5 Kh6 3.a5 Kh5 4.f5 exf5 5.Be1 bxa5 6.Bxa5
(1.528.373) 897
13/21 0:03 +2.35 1...Kg7 2.a5 Kh6 3.axb6 axb6 4.f5 exf5 5.b5 Kh5 6.Be1
(2.745.379) 910
14/20 0:04 +2.60++ 1...Kg7 2.a5 (4.002.511) 918
14/22 0:04 +3.10++ 1...Kg7 2.a5 (4.205.160) 912
14/23 0:09 +4.99 1...Kg7 2.a5 Kh6 3.f5 Kh5 (6.913.092) 760
15/21 0:10 +5.24++ 1...Kg7 2.a5 (8.554.229) 796
15/25 0:13 +5.63 1...Kg7 2.a5 Kh6 3.b5 Kh5 4.f5 Kg4 (10.578.213) 778
16/25 0:18 +5.63 1...Kg7 2.a5 Kh6 3.b5 Kh5 4.f5 (15.212.853) 837
17/25 0:23 +5.88++ 1...Kg7 2.a5 (21.258.746) 886
17/28 0:28 +6.32 1...Kg7 2.a5 Kh6 3.Bb2 Kh5 4.f5 gxf5 5.Bc1 hxg2+ 6.Rxg2
Bxc1 7.axb6 axb6 (25.876.982) 909
18/27 0:42 +6.56 1...Kg7 2.a5 Kh6 3.Bb2 bxa5 4.bxa5 Kh5 5.f5 gxf5 6.Ba3 Kg4
7.Bc5 (40.243.630) 953
19/23 0:55 +6.81++ 1...Kg7 2.a5 (54.539.536) 978
19/34 2:02 +7.00 1...Kg7 2.f5 gxf5 3.b5 Kh6 4.Bb2 Kg5 5.Bc1 Bxg2+ 6.Rxg2+
hxg2+ 7.Kxg2 Bxc1 8.h3 Bf4 9.Kf2 Bxe5 (123.982.778) 1008
19/34 2:04 +7.01++ 1...Kh7 (125.425.969) 1007
19/34 2:13 +7.13 1...Kh7 2.Bb2 Kh6 3.f5 exf5 4.b5 Kh5 5.Bc1 hxg2+ 6.Rxg2
Bxc1 7.h3 Bf4 8.Kg1 Bxg2 9.Kxg2 Bxe5 10.Kf3 (135.254.479) 1010
20/37 2:45 +7.37 1...Kh7 2.Bb2 Kh6 3.f5 exf5 4.Bc1 hxg2+ 5.Rxg2 Bxc1 6.a5
(167.349.042) 1009 TB:1
21/38 4:01 +7.43 1...Kh7 2.Bb2 Kh6 3.f5 exf5 4.Bc1 hxg2+ 5.Rxg2 Bxc1 6.Kg1
Bxg2 7.Kxg2 Bf4 8.h3 Bxe5 9.Kf3 Kg5 10.b5 Kh4 (241.461.445) 1000 TB:5
22/38 5:41 +7.68++ 1...Kh7 2.Bb2 (342.742.712) 1002 TB:25
22/40 6:46 +8.18++ 1...Kh7 2.Bb2 (407.186.040) 1001 TB:27
22/40 7:37 +11.24 1...Kh7 2.Bb2 Kh6 3.f5 Kh5 4.fxg6 fxg6 5.Bc1 Bf2 6.Bd2 Kg4
7.Be1 Be3 8.Bd2 (459.664.224) 1004 TB:27
best move: Kg8-h7 time: 9:33.688 min n/s: 1.012.231 CPU 98.9% n/s(1CPU):
1.023.489 nodes: 580.688.704 TB: 104
Right solution! (0:00.203) 9
Right until now: 3 of 4 ; 8:48m
Position: acd 11; acn 370688000; acs 3518; bm Qe6 Qh5; id BWTC.0624; pes
+12.531; pm Qf5; pv Qf5 Qxd5 cxd5 Nxd5 Nxd5 Bd2 Qh3 Bf4 Nxf4; scv 58:38.49;
solve 0;
[D]r3k2r/pp4pp/2pb1n2/3pq3/4pB2/1BN2bP1/PPPQ1P1P/R4RK1 b kq -
+---+---+---+---+---+---+---+---+
8 |*R*|:::| |:::|*K*|:::| |*R*
+---+---+---+---+---+---+---+---+
7 |*P*|*P*|:::| |:::| |*P*|*P*
+---+---+---+---+---+---+---+---+
6 | |:::|*P*|*B*| |*N*| |:::
+---+---+---+---+---+---+---+---+
5 |:::| |:::|*P*|*Q*| |:::|
+---+---+---+---+---+---+---+---+
4 | |:::| |:::|*P*| B | |:::
+---+---+---+---+---+---+---+---+
3 |:::| B | N | |:::|*B*| P |
+---+---+---+---+---+---+---+---+
2 | P | P | P | Q | | P | | P
+---+---+---+---+---+---+---+---+
1 | R | |:::| |:::| R | K |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Qe5-e6! Qe5-h5! Qe5-f5!
10/23 0:01 +15.81++ 1...Qf5 2.Qxd5 (819.856) 552
10/26 0:02 +18.79 1...Qf5 2.Qxd5 cxd5 3.Ba4+ Kf7 4.Bd7 Nxd7 5.Nxd5 Qxd5
6.Bxd6 Qxd6 7.Rfe1 Rhc8 (1.548.101) 566
11/25 0:03 +19.04++ 1...Qf5 2.Qxd5 (1.942.582) 575
11/25 0:03 +19.54++ 1...Qf5 2.Qxd5 (2.120.955) 580
11/27 0:04 +20.43 1...Qf5 2.Qxd5 cxd5 3.Ba4+ Kf7 4.Nxe4 Bxf4 5.Nd2 Bxd2 6.c4
dxc4 7.Rab1 (2.456.160) 586
12/29 0:05 +20.68++ 1...Qf5 2.Qxd5 (3.005.481) 586
12/29 0:05 +21.18++ 1...Qf5 2.Qxd5 (3.464.416) 594
12/29 0:05 +M150++ 1...Qf5 2.Qxd5 cxd5 3.Ba4+ Kd8 4.Bd7 Qxd7 5.Be5 Qh3
6.Bxf6+ (3.566.199) 597
13/33 0:06 +M9 1...Qf5 2.Qxd5 cxd5 3.Nd1 Qh3 4.Ba4+ Kd8 5.Ne3 (3.873.621)
604
14/25 0:06 +M9 1...Qf5 2.Qxd5 cxd5 3.Nxd5 Qh3 4.Ba4+ Kd8 5.Ne3 Ng4 6.Bg5+
Kc7 7.Bd8+ Kxd8 8.Rfe1 Qxh2+ 9.Kf1 Qxf2+ (4.015.199) 611
15/22 0:06 +M9 1...Qf5 2.Qxd5 cxd5 3.Nxd5 Qh3 4.Ba4+ Kd8 5.Ne3 Ng4 6.Bg5+
Kc7 7.Bd8+ Kxd8 8.Rfe1 Qxh2+ 9.Kf1 Qxf2+ (4.116.354) 615
16/43 0:09 +M10 1...Qf5 2.Qxd5 cxd5 3.Ba4+ Kd8 4.Bd7 Qxd7 5.g4 (5.823.345)
631
17/40 0:13 +M9 1...Qf5 2.Qxd5 cxd5 3.Ba4+ Kd8 4.Bd7 Qxd7 5.Nxd5 Qh3 6.Ne3
Ng4 7.Bg5+ Kc8 8.Rfd1 Qxh2+ 9.Kf1 (8.575.778) 632
best move: Qe5-f5 time: 0:13.671 min n/s: 630.593 CPU 99.0% n/s(1CPU):
636.962 nodes: 8.620.848
Right solution! (0:00.031) 1
Right until now: 4 of 5 ; 8:48m
Position: acd 11; acn 322224128; acs 3518; bm Qh5; id BWTC.0640; pes -1.723; pm
Nbd7; pv Nbd7 Re1 Qe7 Nb5 Nxe4 Qd3 Qf6 Rxe4 Bxe4 Qxe4 Rae8 Nxd6 Rxe4 Nxe4; scv
58:38.40;
[D]rn3rk1/pp3ppp/3b1n2/2pPq3/2B1P3/1NN2bP1/PPPQ1P1P/R1B2RK1 b - -
+---+---+---+---+---+---+---+---+
8 |*R*|*N*| |:::| |*R*|*K*|:::
+---+---+---+---+---+---+---+---+
7 |*P*|*P*|:::| |:::|*P*|*P*|*P*
+---+---+---+---+---+---+---+---+
6 | |:::| |*B*| |*N*| |:::
+---+---+---+---+---+---+---+---+
5 |:::| |*P*| P |*Q*| |:::|
+---+---+---+---+---+---+---+---+
4 | |:::| B |:::| P |:::| |:::
+---+---+---+---+---+---+---+---+
3 |:::| N | N | |:::|*B*| P |
+---+---+---+---+---+---+---+---+
2 | P | P | P | Q | | P | | P
+---+---+---+---+---+---+---+---+
1 | R | | B | |:::| R | K |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Shredder 9 UCI
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
Solution : Qe5-h5! Nb8-d7!
11/23 0:01 -0.60 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bd3 (545.036) 478
12/26 0:02 -0.66 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Nf3+ 6.Bxf3
Bxf3 7.Qg5 Qg6 8.Bf4 (987.353) 478
13/25 0:03 -0.64 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qf4 Nbd7
7.Be3 Rae8 8.Ne4 (1.685.122) 490
14/28 0:06 -0.39++ 1...Qh5 2.Re1 (2.980.445) 485
14/28 0:06 -0.39 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3
(3.390.769) 488
15/30 0:12 -0.40 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Ne4 Bxe2 8.Rxe2 Nf3+ 9.Kg2 Nd4 10.Nxd4 cxd4 (6.164.554) 491
16/37 0:22 -0.35 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Ne4 Bxe2 8.Rxe2 Nf3+ 9.Kg2 Nd4 10.Nxd4 cxd4 11.Qf3 (11.150.109) 493
17/36 0:38 -0.31 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Nb5 Be7 8.Nd2 Bxe2 9.Qxe2 Qf5 10.d6 Bf6 11.Ne4 (19.230.932) 501
18/36 1:09 -0.47 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Nb5 Bb8 8.d6 Re8 9.Bd2 Qg4 10.Bf1 (34.877.867) 505
19/42 2:17 -0.53 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Nb5 Bxe2 8.Rxe2 Qg4 9.f4 Nc4 10.Qd3 Rae8 11.Rxe8 Rxe8 (69.393.969) 504
20/41 4:23 -0.53 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Nb5 Bxe2 8.Rxe2 Qg4 9.f4 Nc4 10.Qd3 Rae8 11.Rxe8 Rxe8 12.Qxc4 Qxg3+
(132.451.897) 502
21/44 8:28 -0.38 1...Qh5 2.Re1 Ng4 3.h4 Ne5 4.Bf1 Bxe4 5.Be2 Bf3 6.Qe3 Nbd7
7.Nb5 Bxe2 8.Rxe2 Qg4 9.Nd2 Be7 10.Qe4 Qh3 11.d6 Bf6 12.Qg2 Qg4 (252.409.504)
496
best move: Qe5-h5 time: 10:22.406 min n/s: 491.101 CPU 98.4% n/s(1CPU):
499.086 nodes: 305.656.843
Right solution! (0:00.031) 5
Right until now: 5 of 6 ; 8:48m
I/O Fault!
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20
-------------------------------------------------------------------------------------
0 | 2 - 0 0 0 0
1 sec -> 4/6
2 sec -> 4/6
3 sec -> 5/6
4 sec -> 5/6
5 sec -> 5/6
6 sec -> 5/6
7 sec -> 5/6
8 sec -> 5/6
9 sec -> 5/6
10 sec -> 5/6
11 sec -> 5/6
12 sec -> 5/6
13 sec -> 5/6
14 sec -> 5/6
15 sec -> 5/6
20 sec -> 5/6
25 sec -> 5/6
30 sec -> 5/6
40 sec -> 5/6
50 sec -> 5/6
60 sec -> 5/6
90 sec -> 5/6
120 sec -> 5/6
150 sec -> 5/6
180 sec -> 5/6
240 sec -> 5/6
300 sec -> 5/6
360 sec -> 5/6
420 sec -> 5/6
480 sec -> 5/6
540 sec -> 5/6
600 sec -> 5/6
n/s: 711.686
TotTime: 57:44m SolTime: 8:48m
Ply: 0 Positions: 5 Avg Nodes: 0 Branching = 0.00
Ply: 1 Positions: 4 Avg Nodes: 70 Branching = 0.00
Ply: 2 Positions: 4 Avg Nodes: 483 Branching = 6.90
Ply: 3 Positions: 4 Avg Nodes: 1897 Branching = 3.93
Ply: 4 Positions: 3 Avg Nodes: 3724 Branching = 1.96
Ply: 5 Positions: 2 Avg Nodes: 14272 Branching = 3.83
Ply: 6 Positions: 2 Avg Nodes: 60885 Branching = 4.27
Ply: 7 Positions: 2 Avg Nodes: 106711 Branching = 1.75
Ply: 8 Positions: 2 Avg Nodes: 271078 Branching = 2.54
Ply: 9 Positions: 1 Avg Nodes: 625188 Branching = 2.31
Ply:10 Positions: 1 Avg Nodes: 1996589 Branching = 3.19
Ply:11 Positions: 1 Avg Nodes: 3529196 Branching = 1.77
Ply:12 Positions: 1 Avg Nodes: 6708325 Branching = 1.90
Ply:13 Positions: 1 Avg Nodes:13668532 Branching = 2.04
Ply:14 Positions: 1 Avg Nodes:93809820 Branching = 6.86
Ply:15 Positions: 1 Avg Nodes:128906869 Branching = 1.37
Ply:16 Positions: 1 Avg Nodes:224263104 Branching = 1.74
Engine: Shredder 9 UCI (400 MB)
by Stefan Meyer-Kahlen
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.