It’s Your Move: daily chess puzzle # 115
White to play and win
Unzicker v Antoshin, Sochi 1965
Solution
The initial moves are fairly apparent, but why they win is anything but so: I had to set up the pieces on the board and fully concentrate for the solution to 'click'.
1 Bf7+ Kf7[] 2 Qd5+ Kf8 3 Bd6+ is obvious:
But it wasn't at first apparent to me that White had sufficient, but, calming down and assessing Black's two defences separately, I saw that Black's Queen was vulnerable/ overloaded. If first 3..Re7 then 4 Re6 threatens a discovered check:
4…Qd8 5 Rf6+ (or 5 Rce1) gf[] 6 Re11-0
If instead 3…Be7 then 4 Re7! Re7[] 5 Qe6!
And if say 5…Qb7 then 6 Be7+, and Black's Queen is overloaded. It can't capture the Be7 since the Rc8 would then be a LPDO.
A challenging, enjoyable, puzzle.
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