Cordingley puzzle 79

White to play and win

Solution

Again, straightforward. The Rb7 is attacked, and is desperado, so has to inflict maximum damage, and the Nf5 clearly portends trouble. Black's queen is offside, and all that is needed is to appraise how much force white has after 1 Nh6+, 2 Rf7, 3 Qh6. When you see that the remaining rook controls the e file, and moves like Bh5+ are in the air, with obvious defences like 3…Rg8 losing to 4 Bh5+ mating, 3…Rh8 4 Bh5+ Kg8 5 Qg6+ and 6 Qf7 mate, and that black has no prospect of a back rank mate (if nothing else, Nf1 is available), then it is game over.

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