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Daily chess puzzle: Check Mate #161

November 18, 2016
Another puzzle from Dragoslav Andric’s 1981 book “Matni Udar”.
White to play and win
 1611
E Schröder v M Schröder, Maribor 1947
Solution
An odd one, in that the book’s solution, the game continuation no doubt, is the very hard to see 1 Qg4!, its main point being 1…Bg4 is met by 2 Ne7+ Kf8[] 3 Ng6 mate. In the game, Black played 1…Kf7 met by 2 Qg6+ (2 Nf4 also wins) Kg6 3 Nf4+ and mates. 1…Rc4 is met by 2 Qg6 1-0.
The above lines are fine, but the line I found, 1 Rg7+ is just as forcing, and more obvious. 1…Kg7 2 Qh6+ Kf7
1612
3 Qh7+ Kf8[]
1613
and either 4 Nf4 or 4 Qg6 or the line I saw, 4 Qh8+ Bg8[] 5 Rh7 and mate next move.
When I loaded the position into Deep Fritz, it gave both 1 Rg7+ and the surprising 1 Nf6+ as mate in 7: after some thought it reduced 1 Rg7_ to mate in 6; 1 Qg4 it also gives as mate in 7.
FEN
 2rqr1k1/4p1bR/3pbpp1/p2N4/1pB1PQ2/8/PPP2PP1/2K4R w – – 0 1
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