CCT-16: Arasan-Crafty game

[jdart]

I have put up some annotations of this game here:

http://arasanchess.org/games.shtml (go to the end of the list). It was quite interesting to watch. It looked like a draw but then moves 100-109 were critical and I think Arasan missed a win there.

Crafty was getting up to 36M nodes/second in the endgame. Arasan was on a dual Opteron and getting maybe 7-12M but still on some positions it was searching well over a trillion nodes.

--Jon

[beachknight]

Quite interesting game with around 200 moves.

I'll annotate this deeply on the next issue of Antalya Chess Express.

Best,

[Eelco de Groot]

Here's some analysis done last Sunday, Stockfish but only about move 108. I ran Stockfish first in single PV and then switched to two best moves, so the times don't say very much:

[D]6q1/1kr4p/b3p3/p2pNrPR/Pp1P1P2/1Pp1P3/2Q2K2/7R w - -

Engine: Sf20140125_001 MP (Q6700, 4 threads, 512 MB,
Change in eval, different space calculation)
by Tord Romstad, Marco Costalba and Joona Kiiski

38 22:12 +2.49 108.Nf3 Kb8 109.Ke1 Rff7 110.Rh6 Qc8
111.Kd1 Rfe7 112.Ne5 Qb7 113.Ng4 Ka7
114.Kc1 Bc4 115.R6h3 Rg7 116.R3h2 Kb8
117.Ne5 Ba6 118.Ng4 Qa7 (3.881.240.354) 2912

37 22:12 +2.03 108.Ke1 Rxe5 109.dxe5 Qg6 110.Qxg6 hxg6
111.Rh7 Bd3 112.Rxc7+ Kxc7 113.Kd1 Be4
114.Rh7+ Kc6 115.Re7 Bf5 116.Ra7 Kb6
117.Rd7 Bg4+ 118.Kc1 Ka6 119.Rd6+ Kb7
120.Kc2 Bf5+ 121.Kd1 (3.881.240.354) 2912

_____________________________________________________________


38 23:19 +2.49 108.Nf3 Kb8 109.Ke1 Rff7 110.Rh6 Qc8
111.Kd1 Rfe7 112.Ne5 Qb7 113.Ng4 Ka7
114.Kc1 Bc4 115.R6h3 Rg7 116.R3h2 Kb8
117.Ne5 Ba6 118.Ng4 Qa7 (4.081.398.045) 2915

38 23:19 +2.03 108.Ke1 Rxe5 109.dxe5 Qg6 110.Qxg6 hxg6
111.Rh7 Bd3 112.Rxc7+ Kxc7 113.Kd1 Be4
114.Rh7+ Kc6 115.Re7 Bf5 116.Ra7 Kb6
117.Rd7 Bg4+ 118.Kc1 Ka6 119.Rd6+ Kb7
120.Kc2 Bf5+ 121.Kd1 (4.081.398.045) 2915

_____________________________________________________________


39 30:21 +2.49 108.Nf3 Kb8 109.Ke1 Rff7 110.Rh6 Qc8
111.Kd1 Rfe7 112.Ne5 Qb7 113.Ng4 Ka7
114.Kc1 Bc4 115.R6h3 Rg7 116.R3h2 Kb8
117.Ne5 Ba6 118.Ng4 Qa7 (5.317.660.674) 2919

39 30:21 +1.47 108.Ke1 Rxe5 109.dxe5 Qg6 110.Qxg6 hxg6
111.Rh8 Bd3 112.Kd1 Rd7 113.Kc1 Be4
114.R1h6 Bf5 115.R6h7 Rxh7 116.Rxh7+ Kb6
117.Rd7 Kc6 118.Ra7 Kb6 119.Ra8 Be4
120.Re8 Bf5 121.Rb8+ (5.317.660.674) 2919

_____________________________________________________________


40 34:47 +2.49 108.Nf3 Kb8 109.Ke1 Rff7 110.Rh6 Qc8
111.Kd1 Rfe7 112.Ne5 Qb7 113.Ng4 Ka7
114.Kc1 Bc4 115.R6h3 Rg7 116.R3h2 Kb8
117.Ne5 Ba6 118.Ng4 Qa7 (6.120.711.484) 2932

40 34:47 +1.55 108.Ke1 Rxe5 109.dxe5 Qg6 110.Qxg6 hxg6
111.Rh7 Bd3 112.Rxc7+ Kxc7 113.Rh7+ Kb6
114.Kd1 Kc6 115.Ra7 Kb6 116.Re7 Bf5
117.Re8 Kc7 (6.120.711.484) 2932

[jdart]

Interesting discovery. It does look like 108. Nf3 is best, and good for a sizable advantage.

--Jon