Cordingley puzzle 76

White to play and win

Jaffe-Spielmann, Carlsbad 1911

Solution

I found this puzzle fairly straightforward, first noting that the only LPDO piece is black's Qc6, based on which I first tried 1 Re3, using my worst placed piece, but it is insufficient. I therefore looked at the obvious smite 1 Ng6, noting that once the Queen is on g6 or h6, there is a horizontal pin on the Qc6, and the e6 pawn is double attacked.

Noting then that there is at least a perpetual (1 Ng6 hg 2 Qg6+ and if Rg7 3 Be6+ wins, or if 2…Rh7 3 Qh6+ the king must move back to g8 to protect the LPDO Rf8) I had confidence, a stepping stone, in which to see if there is a win. It didn't take long to think of 3 Ne5 when I thought the best defence was 3…Qe8, but this is defeated by 4 Qh6+ Rh7 5 Ng6+ Kg8 6 Be6+! overloading the Qe8: the same tactic, Be6, recurs against other defences too, such as against the move Spielmann played, 3…Qd6.

A nice puzzle.

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