Dvortesky’s article on Accidental tactics #chess

I referred to one puzzle in this chesscafe.com article by Mark Dvortesky yesterday. The puzzles are really hard, or at least the majority are, and well worth cracking.

Below is the starting extract of Mark's article:

In short, find what the players missed.

Purdy would have solved the this one; as would a reader of John Nunn.

Solution

The move Rc7 is key: on c7, the rook is LPDO. By looking out for LPDOs (Nunn) and imagining all moves that smite, no matter how ridiculous (Purdy), then 28 Nd2! Qc6 29 Ra8+ Qa8 30 Bh6!! wins a pawn because if 30…gh?? 31 Qg3+ is a double attack, picking up the LPDO rook.

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