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It’s Your Move: daily chess puzzle # 20

June 14, 2015

White to play and win

Unzicker v Botvinnik, Oberhausen 1961

 

Solution

 

The first move, 1 e6! is an obvious biff to try, and is the move I would hopefully have played. Black then resigned, because I suspect at top GM level the result is clear, but for me, there is a lot of calculation left, and, in my case, I couldn't quite break 1…Rd6 (delete the word quite…you either break a defence, or you don't).

 

1…fe is easiest: 2 Qg7+ and the LPDO Rh8 drops off;

1…Rd6 and (the engine showed me) 2 Qb7+ Ke6 3 Rd6+ Qd6 4 Rb6 pins and wins;

1…Rc7 2 Rf1 Qg5 3 Qd5 threatens to fork and win the LPDO Rc7.

Above written up, having checked Teschner's solution. Then load Stockfish, to enter the position for the blog, and…instantaneously, 1 Re6+! flashes up, mate in 6.

Once seen, it is 'obvious': Checking on the black squares gets the king (one line being 1…fe 2 Qg7+ Kd8 3 Qh8+ Kc7 4 Qb8 mate)

 

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