Cordingley puzzle 182 #chess

Black to play and win

Solution

A rest day: 1…Qf3 is 'obvious' and the calculations are quite limited:

1. Check that the main line, 2 gf Bh3+ 3 Kg1 Rae8 wins;
2. Check there are no 'funnies', like white back-rank mating black: there aren't.

In the main line, white can grovel, with 4 Qf1 Bf1 5 Kf1 but then 5…d2 and the game is over.

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