Test your chess: daily chess puzzle # 206

White to play and win

Black played Rf7 in this position: how did white respond?

A Davatz v G Boulle 1981

Solution

Examine all biffs and a review for LPDOs both lead to 1 Bg4! And perhaps strangely, there is no adequate reply. The fact that the defender of f7 is a LPDO makes black's position collapse. Best is 1…Bg4 2 Rf7 but then white has an overwhelming advantage.

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