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Copyright 1991,1996, 1997, 1998 John Richard Coffey.
If you find any errors, then please let me know.- John.
Please use the links below to center the problems, find the solution, and to advance to the next problem.

5W0049 [solution]	_____	5W0050 [solution] [Next]
5W0051 [solution]	_____	5W0052 [solution] [Next]
5W0049 This is more complicated than it first looks. 1. Rd8 Kf7 2. Qe6+ Kg7 3. Rxe8 fails to 3. .. Qf2+ which gets a perpetual check. So instead 1. Rd8 Kf7 2. Rxe8! Kxe8 3. Qg3!! threatens a 4th move queen check and a pawn queen on move 5.	_____	5W0050 1. Bxf5 gxf5 2. f7+!! and now if Kxh7 3. f8=Q as double threat of Qh8 mate and Qg7 mate. So if 2. ... Kf8 3. Bd2 and black may have to give up his rook to stop 4. Bh6+ and 5. f8=Q. Coffey vs. Eric Hamond, 1996 Utah Amateur Championship, board 1.
5W0051 1. Qf5+ and now if 1. ... Ke8 2. Qc8+ Kf7 3. Qxh8 Kxg6 4. Qxd4 with a won position. If instead 1. ... Ke7, then 2. Re6+ Kd8 (Kd7 is worse because of Rh6+) 3. Qd5+ Bd6 (so as to be able to play kd7) 4. Rxd6+ cxd6 5. Qa8+ with a skewer.	_____	5W0052 There might be other solutions, but a neat mate in 5 is 1. Bc7+ Kxc7 2. Nd5+ and black can flee to 3 squares all of which are bad. 2. ... Kd8 3. Rxc6 and then 4. Rd6 mate. 2. ... Kb8 3. Qxc6 forces mate. So 2. ... Kb7 3. Qxc6+ Ka6 4. Nb4+ Ka5 5. Qa4 mate.
5W0053 [solution]	_____	5W0054 [solution] [Next]
5W0055 [solution]	_____	5W0056 [solution] [Next]
5W0053 1. Qf5+ and now if 1. ... Ke8 2. Qc8+ Kf7 3. Qxh8 Kxg6 4. Qxd4 with a won position. If instead 1. ... Ke7, then 2. Re6+ Kd8 (Kd7 is worse because of Rh6+) 3. Qd5+ Bd6 (so as to be able to play kd7) 4. Rxd6+ cxd6 5. Qa8+ with a skewer. Thanks to Eon on FICS.	_____	5W0054 Apparently the best way is to just overwhelm black with pawns. The white king doesn't really participate much in the attack. 1. b6 and not Kc8 2. b7+ Kb8 3. d7 Kc7 4. d8=Q+ Kxd8 5. b8=Q. If instead 1. ... Ra5+ then the king flees and he plays b7 (followed by c7) at his convenience.
5W0055 Crafty (comptuer) vs. Grand Master Heine in a 3 minute game at the Internet Chess Club. 1. Qf7! Black resigns. i.e. 1. ... Kb8 2. Bxa7+ Ka8 3. Bc5+ Kb8 4. Rb1+ forces mate. The threat is 5. Qb7 mate. Black can give up two pieces to delay it, but it hardly matters. If 1. ... a5 2. Rxa5! wins	_____	5W0056 the position is complicated. White can win the exchange by taking on e7 but there is better. he would like to play Qh4 threatening mate but the response of f6 threatenes Rh7. It appears that the best is 1. Nxd8! Qxd8? 2. Qh4 f6 3. Bxh6 Rh7 4. Bxd8 Rxh4+ 5. Bxh4 Other variations are possible.

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