Puzzle of the week #187

Submitted by Eugen on Mon, 03/05/2012 - 00:19

Distracting the defender (1) 

Level
4-Rook
Chess Diagram
[Event "Puzzle #187"][Date "2012.03.05"][Result "0-1"][SetUp "1"][FEN "5rk1/R3p2p/3bq1pB/1p6/1P1PNnP1/2P2Q1P/8/6K1 b - - 0 1"]
We have a complicated position with both sides knocking on the other side's door, ready to deliver a crushing blow. There's no time for carefully prepared new plans; the ones leading here should be good enough. What it is needed now is the following:
a) Quick analysis to determine where we stand and more important where are the weaknesses on each side
b) Black to move needs to find the best possible line
c) Can Black use "distracting the defender" method? Who's the defender Black needs to distract?

Total available points for this puzzle is 30. The answers will be published next week together with puzzle #188.

Puzzle #186 solution:
Dus Chotimirsky - Bannik, USSR 1949. Philip and Ziyao have provided the most thoughtful answers again. Here is Philip:
a) White is down by one pawn and is in check. White's d5 Knight is also under attack. But it's White's turn. White's Queen and two Knights are in good positions to attack.
b) White is able to hold the fort against Black's killer diagonals. See solution:

[Event "Puzzle #186"][Date "2012.02.27"][Result "1-0"][SetUp "1"][FEN "q1rr2k1/p4ppp/1p4n1/2pN1N1Q/3b1P2/1P4P1/P6P/3R1RK1 w - - 0 1"]1.Rxd4 Kh8 (1...cxd4 2.Nf6+ gxf6 3.Qh6 {White has mate threat with Qg7# and Black can't save it}) (1...Rxd5 2.Rxd5 Qxd5 3.Nh6+ gxh6 4.Qxd5 {White wins}) (1...Kf8 2.Qxh7 Rxd5 3.Qxg7+ Ke8 4.Re1+ Kd7 (4...Kd8 5.Qxf7 Qc6 6.Rxd5+ Qxd5 7.Re8#) 5.Qxf7+ {White is in complete control and will win the game}) 2.Nf6 gxf6 3.Qh6 Rg8 4.Rd7 Rcf8 5.Nd6 Rg7 (5...Qd5 6.Nxf7+ Qxf7 7.Rxf7 Rxf7 8.Re1 {White is winning}) 6.Rb7 {White can push down the f-pawn to attack Black's g6-knight and then White's Queen can capture Black's f6-pawn. White is no longer in danger and is in better position}

Correct solutions:
Philip, Ziyao - 20 points
James - 19 points
Harmony, Daniel - 15 points
Coco - 12 points
Derrick, Leo, Alex, Leroy - 10 points

Standings:
Philip - 154 points
Ziyao - 121 points
Harmony - 117 points
James - 113 points
Daniel - 112 points
Jeffrey - 111 points
Derrick - 81 points
Leroy - 80 points
Leo - 73 points
Alex - 67 points
Coco - 66 points
Kevin - 27 points