Test your chess: Reitstein problem 205

White to play and win

Find the most precise win

E Bergendorff v D Walt 1940

Solution

White played 1 Rc8 which wins easily enough, but 1 hg+ Kg7 2 Nf7! forces mate, as does the move order I chose, 1 Nf7! with the same idea: 1…Rc1 then either 2 Qg6 or 2 hg+ (better).

'Examine all biffs' would lead to the solution: each of Rc8, or the two better lines, hg and Nf7, come from this maxim.

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