Puzzle of the week #381

Submitted by Eugen on Sun, 03/15/2020 - 23:43

Relative pins

Chess Diagram
[Event "Puzzle #381"][Date "2020.03.15"][Result "1-0"][SetUp "1"][FEN "6k1/5pp1/p3p2p/8/n1bB4/P3P1P1/2r2PBP/R5K1 w - - 0 31"]
The game went on pretty evenly up to this moment. Material is equal and in exchange for the bishop's pair, black has infiltrated his rook on the second rank. It is white to move. Your task:
a) Analyse the position and figure out the winning combination for white

Total available points for this puzzle is 10. The answers will be published next time together with puzzle #382.

Puzzle #380 solution:
Game Adams - Kasimdzhanov, Tripoli 2004. This week's best answers are by the top scorers:
a) No, because of black's unexpected answer
b) See solution with annotations by Lucas:
[Event "Puzzle #380"][Date "2020.03.08"][Result "0-1"][SetUp "1"][FEN "8/8/6p1/4pk2/1r2np2/8/1B3PKP/4R3 w - - 0 56"]56.Bxe5 f3+!! 57.Kxf3 Kxe5 {White's king is blocking the f2-pawn, meaning Ne4 is safe} 58.Kg4 {Last try to win black's knight} Kf6 59.f4 Nf2+ 60.Kg3 Nd3 {Black is up a piece}

Correct solutions:
Joey, Walter, Lucas - 15 points
Glyn, Zach, Zhengyu, Matthew - 2 points

Lucas, Joey - 25 points
Walter - 16 points
Glyn - 4 points
Zach, Zhengyu, Matthew - 2 points
Steven - 1 point