Chess Puzzle #HTbsV — Advanced, Black to move, middlegame

Position

White: king g1; rooks a1/e1; bishop c2; pawns a3/c3/e4/g2/g3/h5. Black: king h7; rook c8; knights b7/h8; pawns b4/c4/d6/e5/f7/g7/h6. White is ahead by 1 point of material. Black to move.

Solution (1 move)

1. Opponent setup: Rab1 — rook a1→b1. Now Black to move.
2. Best move: b3 — pawn b4→b3.

Tactical themes

endgame, equality, one move. The key move is b3.

Position data

FEN: 2r4n/1n3ppk/3p3p/4p2P/1pp1P3/P1P3P1/2B3P1/R3R1K1 w - - 0 27

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