King safety testposition from Peter Grayson

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Eelco de Groot
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King safety testposition from Peter Grayson

Post by Eelco de Groot »

Of more concern though was what was recorded in Game 229. At move 30 Sugar played 30.Bc6 1.03/25 but in just three seconds, Stockfish 9 replied ..h3 -15.47/25 in its favour, a 16.5 point score difference, the biggest I have ever recorded between two top engines for a half ply difference. The game was quickly over with SugaR's next move 31.g3 #19/34 confirming the engine had blundered. I would immediately point out this is a Stockfish code related issue because within the game context, Stockfish 9 may also have played 30.Bc6 but unclear if SugaR would have played the reply when in analysis it needed to hit 34 ply before seeing ..h3 was winning and was actually #16. 30.Rhd1 may maintain the draw for White.
[pgn]
[Event "SugaR XPrO 1.4"]
[Site "Newport, South Wales"]
[Date "2018.03.16"]
[Round "77.1"]
[White "SugaR XPrO 1.4 64 POPCNT"]
[Black "Stockfish 9 64 POPCNT"]
[WhiteElo "3474"]
[BlackElo "3476"]
[ECO "D85"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3
6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Nd7
11. Bd3 {+0.50/27 35s} e5 {+0.05/25 14s } 12. d5 {+0.48/29
8s} f5 {0.00/29 2s} 13. Qc2 {+0.43/29 17s (Bh6)} f4
{0.00/33 28s} 14. Bd2 {+0.32/33 0s} b5 {-0.05/33 14s}
15. c4 {+0.36/33 0s} b4 {-0.17/32 17s} 16. O-O {+0.39/33
3s} Qc7 {-0.11/31 7s (Qb6)} 17. Bxb4 {+0.59/25 9s (a3)}
cxb4 {0.00/25 3s} 18. c5 {+0.70/24 5s} Qd8 {-0.25/28 27s
(Kh8)} 19. h3 {+0.72/27 19s} g5 {-0.28/29 0s} 20. d6
{+0.90/27 25s} Kh8 {-0.40/28 0s} 21. Bb5 {+1.12/24 4s} a6
{-0.52/29 21s (h5)} 22. Ba4 {+1.41/24 4s} h5 {-0.12/28 4s
(Nb8)} 23. h4 {+0.65/30 36s (c6)} g4 {-0.07/28 18s} 24. Ng5
{+0.50/30 0s} Bh6 {-0.13/28 9s} 25. c6 {+0.38/30 16s} Bxg5
{0.00/32 0s} 26. hxg5 {0.00/31 14s} Nb6 {0.00/34 34s}
27. c7 {0.00/32 0s (d7)} Qxg5 {0.00/30 5s} 28. Bc6 {0.00/32
0s} f3 {+0.07/27 6s} 29. Bxa8 {0.00/32 0s } h4 {0.00/30 10s
(fxg2)} 30. Bc6 {+1.03/25 5s} h3 {+15.47/25 3s (fxg2)}
31. g3 {-M38/34 37s (Qc5)} h2+ {+M38/36 5s} 32. Kh1
{-M30/41 0s} Qh5 {+M30/42 4s} 33. Qc5 {-M26/47 0s (Qb2)}
Rf7 {+M22/49 12s (Rf6)} 34. Qxe5+ {-M20/54 9s} Qxe5
{+M20/62 0s} 35. d7 {-M18/60 6s} Nxd7 {+M18/67 0s} 36. Rfd1
{-M16/63 4s (Bb5)} Qh5 {+M16/72 6s} 37. Bb5 {-M14/73 0s}
axb5 {+M14/83 6s} 38. Rd5 {-M12/92 2s} Qh3 {+M12/106 5s}
39. Rh5+ {-M10/90 19s} Qxh5 {+M10/125 7s} 40. Rc6 {-M8/119
14s} Qh3 {+M8/127 0s} 41. Rh6+ {-M6/127 0s} Qxh6 {+M6/127
0s} 42. a3 {-M4/127 0s (e5)} Qh3 {+M4/127 0s (Qc1+)} 43. a4
{-M2/127 0s (axb4)} Qg2# {+M2/127 0s} 0-1
[/pgn]

Sugar played 30. Bc6 but so does Stockfish. After the reply 30... h3 the Stockfish family can resign, it goes Mate.

[D]B1b2r1k/2P5/pn1P4/4p1q1/1p2P1pp/5p2/P1Q2PP1/2R2RK1 w - -

Engine: Kaissa III (i7 6700, 1 thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

17/34 0:01 -0.67 30.Bc6 fxg2 31.Rfe1 Kh7 32.d7 Nxd7
33.Bxd7 Bxd7 34.Qc5 Kg7 35.Rcd1 Be6
36.Rd6 Qf6 37.c8R Rxc8 38.Qxc8 Bxc8
39.Rxf6 Kxf6 40.Kxg2 Ke6 (3.926.859) 2064

18/36 0:02 -0.55 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.d7 Nxd7
36.Bxd7 g2 37.Qh3 Rf1+ 38.Rxf1 gxf1R+
39.Kxf1 Qxc1+ 40.Ke2 Qc2+ 41.Ke1 Qxe4+
42.Kf1 (5.139.476) 2090

19/33 0:03 -0.29++ 30.Bc6 (6.729.727) 2070

19/33 0:03 -0.13++ 30.Bc6 (7.764.526) 2080

19/33 0:04 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (8.829.431) 2083

20/16 0:05 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (11.261.148) 2097

21/16 0:06 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (13.725.678) 2109

22/16 0:08 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (17.397.578) 2110

23/16 0:10 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (22.671.831) 2133

24/16 0:13 -0.07-- 30.Bc6 h3 (29.373.971) 2134

24/37 0:19 0.00++ 30.Rfd1 (42.029.689) 2117

24/37 0:21 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (45.971.648) 2121

25/25 0:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (60.863.348) 2123

26/25 0:31 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (67.664.224) 2125

27/25 0:48 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (104.246.927) 2153

28/25 1:38 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (218.467.717) 2223

29/25 2:49 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (385.194.654) 2269

30/25 4:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (623.672.483) 2320

31/25 7:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.006.025.967) 2365

32/25 10:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.523.796.857) 2397

33/25 13:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.942.680.541) 2381

34/25 19:00 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (2.704.115.392) 2371

35/25 23:34 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (3.307.733.353) 2338

36/25 50:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (7.209.498.901) 2398

37/25 60:25 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (8.716.003.861) 2404

38/25 127:18 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (18.987.226.607) 2485

39/40 185:52 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kg7 41.Qxg2+ Rg6
42.c8Q Qd1+ 43.Kh2 (28.436.231.032) 2549

40/36 251:16 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (38.979.111.459) 2585

41/36 442:43 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (70.408.167.935) 2650

42/25 692:40 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (110.452.116.371) 2657

43/25 1271:340.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (200.032.086.289) 2621

44/25 1424:430.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (224.532.187.990) 2626

best move: Rf1-d1 time: 1424:43.437 min n/s: 2.626.617 nodes: 224.532.187.990
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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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: King safety testposition from Peter Grayson

Post by Dann Corbit »

With Uri's cramped position check, SF finds the right move at ply 30:

Code: Select all

Searching: B1b2r1k/2P5/pn1P4/4p1q1/1p2P1pp/5p2/P1Q2PP1/2R2RK1 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +3.54   00:00    3556  Bc6
 2   +2.62   00:00   15951  Bd5 fxg2 Kxg2 g3 fxg3
 3   +0.92   00:00   31275  g3 Nxa8 Qc5 hxg3 fxg3
 4   +1.06   00:00   43594  g3 hxg3 fxg3 Nxa8
 5   +1.06   00:00   56257  g3 hxg3 fxg3 Nxa8 Qc5
 6   +0.65   00:00   71784  g3 Nxa8 Qc5 Kg7 d7 Bxd7
 7   +0.93   00:00   89091  g3 hxg3 fxg3 Nxa8 Rcd1 Bd7 Qc1
 8   +1.14   00:00  108228  g3 Nxa8 Qc5 Kg7 gxh4 Qf4 Qe3 Qxe3 fxe3 g3
 9   +0.93   00:00  132516  g3 Nxa8 Qc5 Kg7 gxh4 Qf4 d7 Bxd7 Qd6 Bc8
10   +1.12   00:00  151682  g3 Nxa8 Qc5 Bd7 gxh4 Qf4 c8=Q Rxc8 Qxc8+ Bxc8 Rxc8+ Kg7
11   +1.43   00:00  261321  g3 Nxa8 Qc5 Bd7 gxh4 Qf6 h5 Qg5 c8=Q Rxc8 Qxc8+ Bxc8 Rxc8+ Kg7 Rxa8
12   +0.03   00:00   1185K  Bc6 fxg2 Kxg2 g3 f4 h3+ Kg1 exf4 Qd2 Nd7 Bxd7 Bxd7 Rc2 Kg7 Qxb4
13   +0.00   00:00   1468K  Bc6 fxg2 Rfd1 g3 fxg3 hxg3 d7 Qe3+ Kxg2 Qf3+ Kg1 Qe3+ Kh1 Qh6+ Kg1 Qe3+
14   +0.78   00:00   2189K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 gxf3 Qxf3 fxg3 hxg3 Rd6 Nf8 Rd3 Qg4 Qg2 Rf7 Qxg3 Rxc7 Qxg4 Bxg4
15   +0.73   00:00   2432K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 gxf3 Qxf3 fxg3 hxg3 Rd6 Nf8 Rd3 Qg4 Qg2 Rf7 Qxg3 Rxc7 Rb1 Qxg3+ Rxg3 a5
16   -0.51   00:00   5819K  Rfd1 g3 Qd2 Rf4 Bc6 gxf2+ Qxf2 fxg2 Qxb6 Rf1+ Rxf1 gxf1=N+ Kxf1 Qxc1+ Kf2 Qd2+ Kg1 Qxd6 Qf2 Qxc7 Qxh4+ Qh7 Qxh7+ Kxh7 Kf2 Kg6
17   +0.00   00:01   7120K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+
18   +0.00   00:01   9384K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+
19   +0.00   00:01   9808K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+
20   +0.00   00:01  12218K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+
21   +0.00   00:02  16501K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+
22   +0.00   00:03  20733K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+
23   +0.00   00:03  21567K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+
24   +0.00   00:05  32254K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Rcd1 Rxg2+ Kxg2 Qg4 d7 Nxd7 Rd3 Nf6 Rxg3 Qf4 Rh1+ Nh7 Bd5 Qd2+ Kg1 Qd1+ Kg2 Qc2+ Kf3 Qc3+ Kg2 Qd2+
25   +0.00   00:14  65578K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qd3 Bh3 Rec1 Kg7 Qe2 Rc8 Qd2 Kf7 Rb2 Kf6 Qd8+ Kg7 Qd2 Kf6
26   +0.08   00:15  70497K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qd3 Bh3 c8=R Bxc8 Rf1 Qxf1+ Qxf1 Rxf1+ Kxf1 Bh3+ Kg1 Be6 Kg2 a4 Rb2 a3 Rxb4 Bxa2 Ra4 Bb1 Kxg3 a2 Kf3
27   +0.67   00:30 144439K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 Kh7 Qe2 Bg4 Qd3 Bh3 Rec1 Kg7 Qe2 a5 c8=R Qf2+ Qxf2 gxf2+ Rxf2 Rxc8 Rd1 a4 Rd5 Rc1+ Kh2 Rf1 Re2 Be6 Rb5 b3 axb3 a3 Ra5 Ra1
28   +0.08   00:37 182929K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qf1 Qh6 Qd3 Bh3 c8=R Bxc8 Rg2 Rg8 Rxg3 Rxg3+ Qxg3 Qg7 Kf2 Qxg3+ Kxg3 Be6 Re2 Kg7 Kh4 a4 Kg5 a3 Rc2 b3 Rc7+ Kh8 axb3 Bxb3 Ra7 a2
29   +0.10   00:47 229066K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qf1 Qh6 Qd3 Bh3 c8=R Bxc8 Rg2 Rg8 Rxg3 Rxg3+ Qxg3 Qg7 Kf2 Qxg3+ Kxg3 Be6 Ra1 a4 a3 b3 Kf3 Kg7 Ke3 Bd7 Kd3 Kf6 Rf1+ Ke7 Kc3 Bc6 Rf2 Ke6 Re2
30   +0.00   01:10 370282K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+
31   +0.00   01:26 466464K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+
[/code]
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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: King safety testposition from Peter Grayson

Post by Dann Corbit »

stuck to it right through ply 40:

Code: Select all


Searching: B1b2r1k/2P5/pn1P4/4p1q1/1p2P1pp/5p2/P1Q2PP1/2R2RK1 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +3.54   00:00    3556  Bc6 
 2   +2.62   00:00   15951  Bd5 fxg2 Kxg2 g3 fxg3 
 3   +0.92   00:00   31275  g3 Nxa8 Qc5 hxg3 fxg3 
 4   +1.06   00:00   43594  g3 hxg3 fxg3 Nxa8 
 5   +1.06   00:00   56257  g3 hxg3 fxg3 Nxa8 Qc5 
 6   +0.65   00:00   71784  g3 Nxa8 Qc5 Kg7 d7 Bxd7 
 7   +0.93   00:00   89091  g3 hxg3 fxg3 Nxa8 Rcd1 Bd7 Qc1 
 8   +1.14   00:00  108228  g3 Nxa8 Qc5 Kg7 gxh4 Qf4 Qe3 Qxe3 fxe3 g3 
 9   +0.93   00:00  132516  g3 Nxa8 Qc5 Kg7 gxh4 Qf4 d7 Bxd7 Qd6 Bc8 
10   +1.12   00:00  151682  g3 Nxa8 Qc5 Bd7 gxh4 Qf4 c8=Q Rxc8 Qxc8+ Bxc8 Rxc8+ Kg7 
11   +1.43   00:00  261321  g3 Nxa8 Qc5 Bd7 gxh4 Qf6 h5 Qg5 c8=Q Rxc8 Qxc8+ Bxc8 Rxc8+ Kg7 Rxa8 
12   +0.03   00:00   1185K  Bc6 fxg2 Kxg2 g3 f4 h3+ Kg1 exf4 Qd2 Nd7 Bxd7 Bxd7 Rc2 Kg7 Qxb4 
13   +0.00   00:00   1468K  Bc6 fxg2 Rfd1 g3 fxg3 hxg3 d7 Qe3+ Kxg2 Qf3+ Kg1 Qe3+ Kh1 Qh6+ Kg1 Qe3+ 
14   +0.78   00:00   2189K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 gxf3 Qxf3 fxg3 hxg3 Rd6 Nf8 Rd3 Qg4 Qg2 Rf7 Qxg3 Rxc7 Qxg4 Bxg4 
15   +0.73   00:00   2432K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 gxf3 Qxf3 fxg3 hxg3 Rd6 Nf8 Rd3 Qg4 Qg2 Rf7 Qxg3 Rxc7 Rb1 Qxg3+ Rxg3 a5 
16   -0.51   00:00   5819K  Rfd1 g3 Qd2 Rf4 Bc6 gxf2+ Qxf2 fxg2 Qxb6 Rf1+ Rxf1 gxf1=N+ Kxf1 Qxc1+ Kf2 Qd2+ Kg1 Qxd6 Qf2 Qxc7 Qxh4+ Qh7 Qxh7+ Kxh7 Kf2 Kg6 
17   +0.00   00:01   7120K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+ 
18   +0.00   00:01   9384K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+ 
19   +0.00   00:01   9808K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+ 
20   +0.00   00:01  12218K  g3 Kg7 Rcd1 Qh5 Bb7 Rh8 Rd2 Bxb7 d7 hxg3 fxg3 Nxd7 Rxd7+ Kf6 Rd6+ Kg7 Rd7+ 
21   +0.00   00:02  16501K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+ 
22   +0.00   00:03  20733K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+ 
23   +0.00   00:03  21567K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Qh1+ Rh2 Qf3 Rf2 Qh1+ 
24   +0.00   00:05  32254K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 Qxg2 Rf2 Rcd1 Rxg2+ Kxg2 Qg4 d7 Nxd7 Rd3 Nf6 Rxg3 Qf4 Rh1+ Nh7 Bd5 Qd2+ Kg1 Qd1+ Kg2 Qc2+ Kf3 Qc3+ Kg2 Qd2+ 
25   +0.00   00:14  65578K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qd3 Bh3 Rec1 Kg7 Qe2 Rc8 Qd2 Kf7 Rb2 Kf6 Qd8+ Kg7 Qd2 Kf6 
26   +0.08   00:15  70497K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qd3 Bh3 c8=R Bxc8 Rf1 Qxf1+ Qxf1 Rxf1+ Kxf1 Bh3+ Kg1 Be6 Kg2 a4 Rb2 a3 Rxb4 Bxa2 Ra4 Bb1 Kxg3 a2 Kf3 
27   +0.67   00:30 144439K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 Kh7 Qe2 Bg4 Qd3 Bh3 Rec1 Kg7 Qe2 a5 c8=R Qf2+ Qxf2 gxf2+ Rxf2 Rxc8 Rd1 a4 Rd5 Rc1+ Kh2 Rf1 Re2 Be6 Rb5 b3 axb3 a3 Ra5 Ra1 
28   +0.08   00:37 182929K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qf1 Qh6 Qd3 Bh3 c8=R Bxc8 Rg2 Rg8 Rxg3 Rxg3+ Qxg3 Qg7 Kf2 Qxg3+ Kxg3 Be6 Re2 Kg7 Kh4 a4 Kg5 a3 Rc2 b3 Rc7+ Kh8 axb3 Bxb3 Ra7 a2 
29   +0.10   00:47 229066K  Bc6 fxg2 Rfe1 g3 fxg3 hxg3 d7 Nxd7 Bxd7 Bxd7 Qxg2 Qf4 Rc2 a5 Qe2 Bg4 Qf1 Qh6 Qd3 Bh3 c8=R Bxc8 Rg2 Rg8 Rxg3 Rxg3+ Qxg3 Qg7 Kf2 Qxg3+ Kxg3 Be6 Ra1 a4 a3 b3 Kf3 Kg7 Ke3 Bd7 Kd3 Kf6 Rf1+ Ke7 Kc3 Bc6 Rf2 Ke6 Re2 
30   +0.00   01:10 370282K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
31   +0.00   01:26 466464K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
32   +0.00   01:59 666269K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
33   +0.00   02:04 696063K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
34   +0.00   02:25 819134K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
35   +0.00   02:48 959740K  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
36   +0.00   03:07   1076M  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
37   +0.00   03:45   1294M  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
38   +0.00   04:22   1518M  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
39   +0.00   05:33   1922M  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+ 
40   +0.00   06:21   2191M  Rfd1 g3 Qd2 Qh5 d7 Nxd7 Rc6 Rf4 Qxd7 Bxd7 Rxd7 gxf2+ Kh2 f1=N+ Kh1 Ng3+ Kh2 Nf1+
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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MikeGL
Posts: 1010
Joined: Thu Sep 01, 2011 2:49 pm

Re: King safety testposition from Peter Grayson

Post by MikeGL »

Eelco de Groot wrote:
Of more concern though was what was recorded in Game 229. At move 30 Sugar played 30.Bc6 1.03/25 but in just three seconds, Stockfish 9 replied ..h3 -15.47/25 in its favour, a 16.5 point score difference, the biggest I have ever recorded between two top engines for a half ply difference. The game was quickly over with SugaR's next move 31.g3 #19/34 confirming the engine had blundered. I would immediately point out this is a Stockfish code related issue because within the game context, Stockfish 9 may also have played 30.Bc6 but unclear if SugaR would have played the reply when in analysis it needed to hit 34 ply before seeing ..h3 was winning and was actually #16. 30.Rhd1 may maintain the draw for White.
[pgn]
[Event "SugaR XPrO 1.4"]
[Site "Newport, South Wales"]
[Date "2018.03.16"]
[Round "77.1"]
[White "SugaR XPrO 1.4 64 POPCNT"]
[Black "Stockfish 9 64 POPCNT"]
[WhiteElo "3474"]
[BlackElo "3476"]
[ECO "D85"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3
6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Nd7
11. Bd3 {+0.50/27 35s} e5 {+0.05/25 14s } 12. d5 {+0.48/29
8s} f5 {0.00/29 2s} 13. Qc2 {+0.43/29 17s (Bh6)} f4
{0.00/33 28s} 14. Bd2 {+0.32/33 0s} b5 {-0.05/33 14s}
15. c4 {+0.36/33 0s} b4 {-0.17/32 17s} 16. O-O {+0.39/33
3s} Qc7 {-0.11/31 7s (Qb6)} 17. Bxb4 {+0.59/25 9s (a3)}
cxb4 {0.00/25 3s} 18. c5 {+0.70/24 5s} Qd8 {-0.25/28 27s
(Kh8)} 19. h3 {+0.72/27 19s} g5 {-0.28/29 0s} 20. d6
{+0.90/27 25s} Kh8 {-0.40/28 0s} 21. Bb5 {+1.12/24 4s} a6
{-0.52/29 21s (h5)} 22. Ba4 {+1.41/24 4s} h5 {-0.12/28 4s
(Nb8)} 23. h4 {+0.65/30 36s (c6)} g4 {-0.07/28 18s} 24. Ng5
{+0.50/30 0s} Bh6 {-0.13/28 9s} 25. c6 {+0.38/30 16s} Bxg5
{0.00/32 0s} 26. hxg5 {0.00/31 14s} Nb6 {0.00/34 34s}
27. c7 {0.00/32 0s (d7)} Qxg5 {0.00/30 5s} 28. Bc6 {0.00/32
0s} f3 {+0.07/27 6s} 29. Bxa8 {0.00/32 0s } h4 {0.00/30 10s
(fxg2)} 30. Bc6 {+1.03/25 5s} h3 {+15.47/25 3s (fxg2)}
31. g3 {-M38/34 37s (Qc5)} h2+ {+M38/36 5s} 32. Kh1
{-M30/41 0s} Qh5 {+M30/42 4s} 33. Qc5 {-M26/47 0s (Qb2)}
Rf7 {+M22/49 12s (Rf6)} 34. Qxe5+ {-M20/54 9s} Qxe5
{+M20/62 0s} 35. d7 {-M18/60 6s} Nxd7 {+M18/67 0s} 36. Rfd1
{-M16/63 4s (Bb5)} Qh5 {+M16/72 6s} 37. Bb5 {-M14/73 0s}
axb5 {+M14/83 6s} 38. Rd5 {-M12/92 2s} Qh3 {+M12/106 5s}
39. Rh5+ {-M10/90 19s} Qxh5 {+M10/125 7s} 40. Rc6 {-M8/119
14s} Qh3 {+M8/127 0s} 41. Rh6+ {-M6/127 0s} Qxh6 {+M6/127
0s} 42. a3 {-M4/127 0s (e5)} Qh3 {+M4/127 0s (Qc1+)} 43. a4
{-M2/127 0s (axb4)} Qg2# {+M2/127 0s} 0-1
[/pgn]

Sugar played 30. Bc6 but so does Stockfish. After the reply 30... h3 the Stockfish family can resign, it goes Mate.

[D]B1b2r1k/2P5/pn1P4/4p1q1/1p2P1pp/5p2/P1Q2PP1/2R2RK1 w - -

Engine: Kaissa III (i7 6700, 1 thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

17/34 0:01 -0.67 30.Bc6 fxg2 31.Rfe1 Kh7 32.d7 Nxd7
33.Bxd7 Bxd7 34.Qc5 Kg7 35.Rcd1 Be6
36.Rd6 Qf6 37.c8R Rxc8 38.Qxc8 Bxc8
39.Rxf6 Kxf6 40.Kxg2 Ke6 (3.926.859) 2064

18/36 0:02 -0.55 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.d7 Nxd7
36.Bxd7 g2 37.Qh3 Rf1+ 38.Rxf1 gxf1R+
39.Kxf1 Qxc1+ 40.Ke2 Qc2+ 41.Ke1 Qxe4+
42.Kf1 (5.139.476) 2090

19/33 0:03 -0.29++ 30.Bc6 (6.729.727) 2070

19/33 0:03 -0.13++ 30.Bc6 (7.764.526) 2080

19/33 0:04 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (8.829.431) 2083

20/16 0:05 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (11.261.148) 2097

21/16 0:06 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (13.725.678) 2109

22/16 0:08 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (17.397.578) 2110

23/16 0:10 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (22.671.831) 2133

24/16 0:13 -0.07-- 30.Bc6 h3 (29.373.971) 2134

24/37 0:19 0.00++ 30.Rfd1 (42.029.689) 2117

24/37 0:21 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (45.971.648) 2121

25/25 0:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (60.863.348) 2123

26/25 0:31 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (67.664.224) 2125

27/25 0:48 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (104.246.927) 2153

28/25 1:38 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (218.467.717) 2223

29/25 2:49 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (385.194.654) 2269

30/25 4:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (623.672.483) 2320

31/25 7:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.006.025.967) 2365

32/25 10:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.523.796.857) 2397

33/25 13:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.942.680.541) 2381

34/25 19:00 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (2.704.115.392) 2371

35/25 23:34 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (3.307.733.353) 2338

36/25 50:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (7.209.498.901) 2398

37/25 60:25 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (8.716.003.861) 2404

38/25 127:18 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (18.987.226.607) 2485

39/40 185:52 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kg7 41.Qxg2+ Rg6
42.c8Q Qd1+ 43.Kh2 (28.436.231.032) 2549

40/36 251:16 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (38.979.111.459) 2585

41/36 442:43 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (70.408.167.935) 2650

42/25 692:40 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (110.452.116.371) 2657

43/25 1271:340.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (200.032.086.289) 2621

44/25 1424:430.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (224.532.187.990) 2626

best move: Rf1-d1 time: 1424:43.437 min n/s: 2.626.617 nodes: 224.532.187.990
Wow, that was a beautiful game. So many fireworks on that single game. Thanks for sharing.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.
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