another interesting playchess.com position

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jdart
Posts: 4406
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

another interesting playchess.com position

Post by jdart »

Pirat_Sören, Rybka 2.2n2 mp 32-b-Hoshad, Rybka 3 Dynamic, playchess.com 2009:

[d] 2kr2rq/1p1n4/p1n1p3/P1Ppbp2/R2Nb3/1NPB4/1P3PP1/2BQRK2 b - - 0 22

Black has a winning position and several moves are good here, but the move played was .. Rxg2!, which is crushing. Very impressive to play this in a rapid time control game.

Rybka again does well here, but Arasan does not find this even after long search. Crafty 23.1 takes about 3 minutes on my quad system.

The complete game:

[Event "16m + 0s, rated"]
[Site "playchess.com"]
[Date "2009.11.13"]
[Round "?"]
[White "Pirat_Sören, Rybka 2.2n2 mp 32-b"]
[Black "Hoshad, Rybka 3 Dynamic Koo"]
[Result "0-1"]
[ECO "B12"]
[BlackElo "2613"]
[PlyCount "68"]
[EventDate "2009.07.31"]
[EventType "rapid"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O h6 7. c3 Ne7
8. Nbd2 Bh7 9. a4 c5 10. a5 a6 11. dxc5 g5 12. Nb3 Bg7 13. h4 gxh4
14. Nxh4 Nc6 15. Nf3 Rg8 16. Re1 Be4 17. Ra4 Bxe5 18. Bd3 f5 19. Bxh6
Qf6 20. Bc1 O-O-O 21. Kf1 Qh8 22. Nfd4 Rxg2 23. Bxe4 Qh1+ 24. Ke2
Rxf2+ 25. Ke3 Bf4+ 26. Kxf2 Bg3+ 27. Kxg3 Rg8+ 28. Bg5 Rxg5+ 29. Kf4
Qh2+ 30. Kxg5 Qg3+ 31. Kh5 Nf6+ 32. Kh6 Ne7 33. Qg4 Qxg4 34. Nxe6
Neg8# 0-1
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: another interesting playchess.com position

Post by zullil »

jdart wrote:Pirat_Sören, Rybka 2.2n2 mp 32-b-Hoshad, Rybka 3 Dynamic, playchess.com 2009:

[d] 2kr2rq/1p1n4/p1n1p3/P1Ppbp2/R2Nb3/1NPB4/1P3PP1/2BQRK2 b - - 0 22

Black has a winning position and several moves are good here, but the move played was .. Rxg2!, which is crushing. Very impressive to play this in a rapid time control game.

Rybka again does well here, but Arasan does not find this even after long search. Crafty 23.1 takes about 3 minutes on my quad system.
Stockfish-1.6.2-mSD7 (8 threads) needs about half a minute:

Code: Select all

Searching: 2kr2rq/1p1n4/p1n1p3/P1Ppbp2/R2Nb3/1NPB4/1P3PP1/2BQRK2 b - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +4.93   00:00     5785 Qh1+ Ke2 Qxg2 Bxe4 fxe4 Nxc6 bxc6 
 2     +5.25   00:00     5955 Bxg2+ Ke2 Qh5+ Kd2 
 3     +5.29   00:00     7629 Bxg2+ Ke2 Qh3 Kd2 
 4     +5.33   00:00    10170 Bxg2+ Ke2 Qh3 Kd2 Be4 Bxe4 fxe4 
 5     +4.28   00:00    14539 Bxg2+ Ke2 Nxd4+ cxd4 Qh4 dxe5 Qxa4 f4 
 5     +4.77   00:00    18625 Qh1+ Ke2 Qxg2 Bxe4 dxe4 Nxc6 Qf3+ Kf1 Qh3+ Ke2 
                              bxc6 
 6  <  +3.60   00:00    69551 Qh1+ Ke2 Qxg2 Bxe4 dxe4 Kd2 Qxf2+ Qe2 
 6     +4.81   00:00    92130 Qh2 Bxe4 dxe4 g3 Nf6 Bf4 Qh1+ Ke2 
 7  <  +4.16   00:00   109182 Qh2 Bxe4 fxe4 Be3 Qxg2+ Ke2 
 8     +4.28   00:00   176439 Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Nf6 Kd2 Qh3 
 9     +5.05   00:01   574279 Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Rf1 f4 Nxc6 bxc6 
                              Bd4 Ne5 Kd2 Bxf2 
10     +4.97   00:01    1283k Qh2 Bxe4 dxe4 g3 Nf6 Qc2 Nh5 Re3 Nxd4 Rxd4 Bxd4 
                              Nxd4 Qh1+ Ke2 
11     +4.73   00:02    3527k Qh2 Ke2 Qxg2 Bxe4 dxe4 Nxe6 Qf3+ Kf1 Qh3+ Ke2 
                              Qg4+ Kf1 Qg2+ Ke2 Nxc5 Nxd8 Nd3 Kd2 Rxd8 Kc2 
12  >  +5.29   00:02    8648k Qh2 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ Kc2 Nxd4+ 
                              Rxd4 Qxf2+ Qd2 Qxe1 
13     +4.97   00:03   10097k Qh2 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ Kc2 Nxd4+ 
                              Rxd4 Qxf2+ Nd2 Nxc5 Bxe4 fxe4 Rf1 Qg3 Qe1 Qh3 
14     +5.82   00:04   19429k Qh2 Bxe4 dxe4 Ke2 Rxg2 Rf1 Nf6 Ke1 Ng4 Qe2 Bg3 
                              Be3 Nce5 c6 Nd3+ Kd2 Nxe3 Qxe3 Bxf2 cxb7+ Kxb7 
                              Qe2 Qf4+ Kd1 
15     +5.98   00:08   38268k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Nxc5 
                              Nxc5 Qf4+ Kc2 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kc3 Rh8 Nxe6 Rh3+ Kc4 Rxb2 
16     +5.90   00:11   54648k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Nxc5 
                              Nxc5 Qf4+ Kc2 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kc3 Rh8 Nxe6 Kd7 d5 Kd6 Nd4 Rf2 
17     +5.94   00:18   94811k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Nxc5 
                              Nxc5 Qf4+ Kc2 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kb3 Rd6 Rc4 b5 axb6 Rxb6+ Kc3 Kd8 Na4 Rb8 
                              Rc6 Kd7 Rxa6 
17  >  +6.22   00:27  136348k Rxg2 Bxe4 Qh1+ Ke2 Rxf2+ Kxf2 Bg3+ Kxg3 Rg8+ Bg5 
                              Rxg5+ Kf4 Qh2+ Kxg5 Qg3+ Qg4 Qxg4+ Kh6 Qh4+ Kg6 
                              Ne7+ Kg7 Qxe1 
18  >  +7.60   00:34  170944k Rxg2 Bxe4 Qh1+ Ke2 Rxf2+ Kxf2 Bg3+ Kxg3 Rg8+ Bg5 
                              Rxg5+ Kf4 Qh2+ Kxg5 Qg3+ Qg4 Qxg4+ Kh6 Qh4+ Kg6 
                              Ne7+ Kg7 Qxe1 c6 bxc6 Bf3 Qe5+ Kh6 Qf4+ Kg7 Qh4 
                              Ra1 e5 
19  > +13.09   02:07  631148k Rxg2 Bxe4 Qh1+ Ke2 Rxf2+ Kxf2 Bg3+ Kxg3 Rg8+ Bg5 
                              Rxg5+ Kf4 Qh2+ Kxg5 Qg3+ Qg4 Qxg4+ Kh6 Qh4+ Kg6 
                              Ne7+ Kg7 Qf6+
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: another interesting playchess.com position

Post by zullil »

Stockfish-1.6.2-mSD4 (8 threads) takes longer:

Code: Select all

Searching: 2kr2rq/1p1n4/p1n1p3/P1Ppbp2/R2Nb3/1NPB4/1P3PP1/2BQRK2 b - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +4.93   00:00     5785 Qh1+ Ke2 Qxg2 Bxe4 fxe4 Nxc6 bxc6 
 2     +5.25   00:00     5955 Bxg2+ Ke2 Qh5+ Kd2 
 3     +5.29   00:00     7629 Bxg2+ Ke2 Qh3 Kd2 
 4     +5.33   00:00    10170 Bxg2+ Ke2 Qh3 Kd2 Be4 Bxe4 fxe4 
 5     +4.28   00:00    14697 Bxg2+ Ke2 Nxd4+ cxd4 Qh4 dxe5 Qxa4 f4 
 5     +4.77   00:00    18731 Qh1+ Ke2 Qxg2 Bxe4 dxe4 Nxc6 Qf3+ Kf1 Qh3+ Ke2 
                              bxc6 
 6  <  +3.60   00:00   122893 Qh1+ Ke2 Qxg2 Bxe4 dxe4 Kd2 Qxf2+ Qe2 
 6     +4.12   00:00   128963 Bxg2+ Ke2 Nxd4+ cxd4 Qh4 Kd2 Qxf2+ Qe2 Qh4 
 6     +4.28   00:00   148257 Qh2 Bxe4 dxe4 Be3 Ndb8 g3 Qh1+ Ke2 
 7     +4.61   00:00   172099 Qh2 Bxe4 dxe4 Be3 Rxg2 Nxe6 Rg1+ Ke2 Qh5+ Kd2 
 8     +4.48   00:00   202987 Qh2 Bxe4 dxe4 Be3 Rxg2 Nxe6 Rh8 Nbd4 Qg1+ Ke2 
 9  <  +3.92   00:00   376787 Qh2 Bxe4 fxe4 Be3 Qxg2+ Ke2 
10     +4.93   00:01    1522k Qh2 Bxe4 dxe4 g3 Bxg3 Be3 Nde5 fxg3 Rxg3 Qd2 Qh3+ 
                              Ke2 Rg2+ Kd1 Rxd2+ Nxd2 
11     +5.09   00:01    4578k Qh2 Ke2 Rxg2 Be3 Bg3 Rf1 Nde5 Bxe4 dxe4 Kd2 f4 
                              Kc2 fxe3 
12     +5.54   00:02    5954k Qh2 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ Kc2 Nxd4+ 
                              cxd4 Qxf2+ Nd2 Nxc5 dxc5 Qxc5+ Kb3 Bxd3 Rxe6 
13     +5.86   00:03    9832k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ 
                              Kc2 Nxc5 Nxc5 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kc3 Rd6 
14     +4.81   00:04   17263k Qh2 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ Kc2 Nxc5 
                              Nxc5 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 Rxe2+ Kc3 
                              Bxd3 Kxd3 Re1 Rb4 
15     +5.54   00:08   38998k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ 
                              Kc2 Nxc5 Nxc5 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kb3 Re8 Rc4 Kd8 Nxb7+ Ke7 Nc5 Rb8+ Kc3 
                              Rbxb2 Nxa6 
16     +5.54   00:13   59348k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 Qf4+ 
                              Kc2 Nxc5 Nxc5 Qxf2+ Re2 Nxd4+ cxd4 Qxe2+ Qxe2 
                              Rxe2+ Kb3 Re8 Rc4 Kd8 Nxb7+ Ke7 Nc5 Rb8+ Kc3 
                              Rbxb2 Nxa6 
17  >  +6.26   00:21   99202k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 
                              Rxf2+ Kc1 e5 Nxc6 bxc6 Rb4 Nb6 Nd4 Nd5 Rb8+ Kxb8 
                              Nxc6+ Kc8 Nxd8 Rxb2 Ne6 Ra2 
18     +6.38   00:32  150445k Qh2 Bxe4 dxe4 Ke2 Rxg2 Be3 Bg3 Kd2 Bxf2 Bxf2 
                              Rxf2+ Kc1 e5 Nxc6 Qh6+ Kb1 Qxc6 Rc4 Nb6 axb6 
                              Rxd1+ Rxd1 f4 Nc1 Qb5 b3 e3 Rd5 Qe8 
18  >  +9.17   01:01  288547k Rxg2 Bxe4 Qh1+ Ke2 Rxf2+ Kxf2 Bg3+ Kxg3 Rg8+ Bg5 
                              Rxg5+ Kf4 Qh2+ Kxg5 Qg3+ Qg4 Qxg4+ Kh6 Qh4+ Kg6 
                              Ne7+ Kf7 dxe4
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