White to move. How should white proceed?
Chess Daily News from Susan Polgar
Thursday chess review
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White to move. How should white proceed?
1 e6
Nce6..this move blocks f7 square and the Queen can checkmate with Qxf6 and Qxh7#
Black does not have immediate checks and hence white can think about
1. Nce6! (threatening mate on g7. however, after)
1……. Qxe6!
2. Nxe6 Nxe6!
although white has won a queen, black is just about to renew it, and white has no way of stopping it.
Hence, white has to go…
1. e6!!
and black is doomed!
Run a high screen at e6, and white can mate starting with Qxf7 followed by Qh7 dunking with mate. There are two possibilities, but only one works. Let’s look at the one fails, first (it caught my first anyway):
1. Nce6?? Qe6! (else white mates)
2. Ne6 Ne6 and black will get his queen back and be up 3 pieces.
No, the proper move is 1.e6 and black can’t stop all the mate threats. The longest line I see is to guard f7 with the bishop from e8, but white just captures and has double mating threats:
1. e6 Be8 (Qe6 2.Nce6 Ne6 3.Qf7)
2. Ne8 Qh4 (a1Q/Ne6 3.Qf7, 4.Qh7#)
3. gh4 Ne6
4. Qf7 Kh8
5. Qh7#
1. e6 (threatening exf7) fxe6
2. Qf7+ Kh8
3. Qxf8#
if for e6 Nxe6 Qxf7+ Kh8 Qh7#
1.e6 it has to be both attack and defend the a1 square Be8
(1…fxe6 2.Qf7+ Kh8 3.Qxf8#)
(1…Nxe6 2.Qxf7+ Kh8 3.Qh7#)
(1…Qxe6 2.Ncxe6 fxe6 3.Qf7+ Kh8 4.Qxf8#)
2.Nxe8 Qxh4+
3.Kg2 Qe4+
4.Nxe4 Nxe6
5.Ng5 Nf4+
6.gxf4 a1=Q
7.Qxa1 Kf8
8.Qxc1 h4
e6
e6!!
1. e6 Be8
2. Nxe8 black resigns
1. E6 QxE6
2. N7xE6 NxE6
3. QxF7+ KH8
4. QH7#
1.e6
If 1…fxe6
2.Qf7+ Kh8
3.Qxf8#
If 1…Nxe6
2.Qxf7+ Kh8
3.Qh7#
If 1…Be8
2.Nxe8 1-0 As black can’t stop Qg7# or the two outcomes above.
My first choice was 1N7e6 threatening mate at g7.Black can not take withP or N as mate occurs with Qf7 followed by Qh7.But 1… Qxe6 defends the position as P at a2 can not be stopped from queening. Correct is
1e6 Be8
1… Nxe6 or fxe6
2Qxf7+ Kh8
3Qh7#
2Nxe8 and black has no adequate defence.