Puzzle of the week #176

Submitted by Eugen on Tue, 12/06/2011 - 07:19

Tricky choice

Chess Diagram
[Event "Puzzle #176"][Date "2011.12.06"][Result "1-0"][SetUp "1"][FEN "6n1/3b1r1k/p3p2p/Pp1pPn1B/2pP1N2/2P5/2PB3P/6RK b - - 0 30"]
After 30 moves in this evenly played game, Black feels that it has stopped White's attack on the King side. The only decision left is how to lastly stop White from winning a pawn with the idea "Bh5-g6xf5" and after "exf5" then "Nxd5". The Black Rook has 3 possible retreat moves and finding the best is one of the tasks:
a) Choose the best retreat for Black and explain your choice together with a sample line
b) What opening do you think they played based on how the position looks like?

Total available points for this puzzle is 15. The answers will be published next week together with puzzle #177.

Puzzle #175 solution:
Zoran Novoselski - Evgeny Bareev, Rome 1990. See the game line below. What a wild finish in this game! Of course you might not find a second person capable to play like White did. This is part of the beauty of chess: one can play in any way they like. Your answers could have been better. Here is the best I got:
[Event "Puzzle #175"][Date "2011.11.26"][Result "0-1"]1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.Nce2 c5 6.c3 Nc6 7.Nf3 b5 8.Nf4 Qb6 9.Be2 cxd4 10.cxd4 g5 {Solution} 11.Nxg5 Qxd4 {Philip: since Black can’t castle safely anymore, trading Queens is not a bad idea} 12.Nd3 (12.Qxd4? {Ziyao} 12...Nxd4 13.Bd1 Nxe5 {Black is winning}) (12.Ngxe6 {Game line} 12...fxe6 13.Bh5+ Ke7 14.Nxd5+ exd5 15.Bg5+ Ke6 16.Bg4+ Kxe5 17.Qe2+ Qe4 18.Qxe4+ dxe4 19.O-O-O Nd4 20.f4+ Kd5 21.Bxd7 Bxd7 22.Bf6 Bc5 {White resigned}) 12...Ndxe5 13.O-O Nxd3 14.Bxd3 {Black has center control and a semi-open g file for rook. Black is most likely to win}

Correct solutions:
Philip, Ziyao - 20 points
Harmony - 15 points
Leo, Leroy - 12 points
Derrick, Daniel - 10 points
James, Alex - 5 points

Philip - 99 points
Ziyao - 91 points
Harmony - 89 points
Leo - 68 points
James - 64 points
Alex - 62 points
Derrick - 55 points
Daniel - 54 points
Leroy - 50 points
Frank - 14 points