White to move. How should white proceed?
3r1nr1/1p3k1p/b3pPpQ/2p3P1/2N2n2/5B1R/pq3P2/3R1K2 w – – 0 1
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1.Qxh7+ Nxh7 (1…Ke8 2.Qe7#)
2.Rxh7+ Ke8 (1…Kf8 2.Rxd8#)
(1…Rg7 2.Rxg7+ and mate follows)
3.f7+ Kf8 (3…Ke7 4.f8Q+ Kxf8 5.Rxd8#)
4.Rxd8+ Ke7
5.f8Q#
1. Qh7+ Nh7
2. Rh7+ Ke8 (Kf8 3. Rd8++)
3. f7+ Ke7 (Kf8 4. Rd8++)
4. fxg8(Q)++
1. QxH7 NxH7 (if 1… Ke8 2. Qe7#)
2. RxH7+ Kf8 (if 2… Ke8 3. Re7+ KF8 4. RxD8#)
3. RxD8#
1. Qxf8+ then
1… Kxf8 2. Rxd8+
or 1… Rdxf8 2. Rd7+
or 1… Rfxf8 2. Qg7+
1Qh7+ Nxq 2Rh7+ rg7 wins easily
Qh7+, Nxh7 (..K e7 followed by mate)
Rxh7, Rg7 (K to 8 mate with Rs see below)
Rxg7+, Ke8
Re7+, F8
Rxd8++
Qh7+, Nxh7 (..K e7 followed by mate)
Rxh7, Rg7 (K to 8 mate with Rs see below)
Rxg7+, Ke8
Re7+, F8
Rxd8++
Not so difficult; all moves by black are forced only moves.
1. Qxh7+, Nxh7
2. Rxh7+, Ke8
3. f7++, Ke7
4. fxg8Q+, Ke8
5. Qf7 checkmate
Erik Fokke
Amsterdam, Netherlands
dear jMac
1Qxf8+ Rgxf8
2Rxh7+ kg8 and Black escapes. Instead
1Qxh7+ Nxh7
2Rxh7+ and now
(a)2… Kf8 3Rxd8#
(b)2…. ke8
3Re7+ Kf8
4Rxd8#
(c)2… Rg7 transposes to (a) or (b)
1 Q:h7+ N:h7; 2 R:h7+ Rg7; 3 R:g7+ Ke8; 4 Re7+ Kf8; 5 R:d8 #
Sorry, I made a stupid mistake on blacks second move.
The right sequence of forced moves is:
1. Qxh7+, Nxh7
2. Rxh7+, Rg7
3. Rxg7+, Ke8
4. Re7+, Kf8
5. Rxd8 checkmate.
Erik Fokke
Amsterdam, Netherlands