Test your chess: daily chess puzzle # 89

White to play and win

W Kobese v G Michelakis 2003

Solution

Here, a scan for LPDOs is the key: Black's Qa5 and Rf8 are LPDOs, and examine all biffs shows that Qc5+, were it to be possible, forks the king and rook.

So, 1 Nb5! has to be looked at. If the knight is captured, the Rf8 falls and the queen is into black's position. But if say 1…Qb4, to keep an eye on c5, then 2 Qb6 threatens mate on d8 and a discovered check to pick up the LPDO Qb4.

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