Drawish test position

[Henk]

This position from Botwinnik-Bronstein 1951 ended in a draw.

[d] Qn2qrk1/b1p3pp/p2p1n2/3Ppp2/8/1b2PPP1/PP1BN1BP/R3K2R b KQ - 0 17

Code: Select all

Depth  Value   Time(seconds)   Nodes
2201   -3.1160      31.72     8694801   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c8b7 a7b7 d5b7 a1c1 f6d5 e1g1 b8d7 b2b4 c7c5 b4c5 d7c5 g2h3 b7c6 f1d1 h7h6 g5h4 
2101   -3.0515      42.55    11783480   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c8b7 a7b7 d5b7 a1c1 f6d5 e1g1 b8d7 f1d1 d7c5 c1c4 d5b6 c4c3 b7d5 a2a3 c7c6 
2001   -3.1081      12.37     3480838   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 g5f6 f8f6 a7b6 f6h6 e1g1 b8d7 b6a5 c8b8 e2c3 b8b6 a5a3 c5c4 f1f2 
1901   -3.0256      10.54     2975519   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 g5f6 f8f6 a7b6 f6h6 e1g1 b8d7 b6a5 c8b8 e2c3 b8b6 a5a3 c5c4 
1801   -3.1152       6.09     1717282   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 g5f6 f8f6 a7b6 b8d7 b6a5 d7b8 a5d2 d5b7 e2c3 c5c4 e1g1 
1701   -3.0590       5.03     1428657   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 g5f6 f8f6 a7b6 b8d7 b6a5 d7b8 a5d2 c8c6 e1g1 b8d7 
1601   -2.9552       2.48      722401   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 a7e7 c8d7 e7d7 b8d7 e2c3 d5a8 a1d1 h7h6 g5c1 
1501   -3.1172       2.48      692017   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 a7e7 c8d7 e7d7 b8d7 e2c3 d5c6 a1d1 f6e8 
1401   -2.8564       1.98      621120   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 a7e7 c8d7 e7d7 b8d7 a1d1 f8b8 b2b3 
1301   -3.1149       1.10      246448   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 c7c5 a7e7 c8d7 e7d7 b8d7 e2c3 d5c6 
1201   -3.2773       0.46      124828   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 b8c6 a7e3 f6h5 e3d2 c8e6 e2c3 
1101   -3.2914       0.27       88588   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 b8c6 a7e3 f6h5 e3d2 c8e6 
1001   -3.1739       0.11       36005   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 b8c6 a7e3 f6h5 e3d2 
901   -3.1815       0.15       44586   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 b8c6 a7e3 f6h5 
801   -3.3061       0.07       16927   a7e3 d2e3 b3d5 a8a7 e8c8 e1c1 d5a2 f3f4 
701   -3.3023       0.07       16472   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 b8c6 
601   -3.2916       0.03        8530   a7e3 d2e3 b3d5 a8a7 e8c8 e3g5 
501   -3.5270       0.02        5617   a7e3 d2e3 b3d5 a8a7 e8b5 
401   -3.4992       0.01        1624   a7e3 d2e3 b3d5 a8a7 
301   -3.6493       0.01         734   a7e3 d2e3 b3d5 
201   -3.5477       0.00         551   a7e3 d2e3 
101   -3.5327       0.01         260   a7e3 
  1   -3.5466       0.04         244   a7e3 

https://www.youtube.com/watch?v=iGnwFsXzqe0

[tpoppins]

This is from game 9 (Chessgames.com link) from that match. True, it ended in a draw, but the diagrammed position is anything but drawish:

Code: Select all

Analysis by Stockfish 040916 64 POPCNT:

17...Bxd5 18.Qxa7 Qc8 19.e4 fxe4 20.0-0 c5 21.fxe4 Nc6 22.Qb6 Bc4 23.Rxf6 Rxf6 24.Nc3 Rf7 25.b3 Be6 26.Rd1 Qb7 27.Qxb7 Rxb7 28.Bf1 Ra7 29.Kg2 Nd4 30.Na4 a5 31.Bd3 Rb7 32.Rf1 h6 33.Rf2 Bf7 34.Ba6 Ra7 35.Bf1 Be6 36.Bd3 Nc6 37.Nb6 Nb4 38.Bxb4 cxb4 39.Bc4 Bxc4 40.Nxc4 a4 
  +- (3.70)  Depth: 38/61   00:40:40  31116MN, tb=55510

(SF prefers 17...Bxe3 at d=8 through d=25 and from d=28 through d=35, all with evals in excess of +300 cp)

White is a whole rook up and his queen is only temporary out of action. I looked at this game in detail and posted some comments (along with SF's evals) on the game page linked above.

Still, I must thank you for bringing this game to my attention, Henk.