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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.

3B0161 [solution]	_____	3B0162 [solution] [Next]
3B0163 [solution]	_____	3B0164 [solution] [Next]
3B0161 1. ... Rc8 2. Ra6 (if the bishop moves then Rc1+ and a1=Q) Rxc6! wins at least a bishop and now if 3. Rxc6 then a1=Q+	_____	3B0162 1. ... Qa5 and white can't avoid mate 2. Kb1 Qxa2+ 3. Kc1 Qa1 mate. He can dely things with 2. f7+ but it doesn't help.
3B0163 Insteresting is 1. ... Kg7 threatening 2. ... Be3 mate. So what does white do to get out of it? 2. h5 Be3+ 3. Kh4 Rh2 mate.	_____	3B0164 1. ... Nc5!! and now if b8 promotes then Qa6 mate. If king moves then Qxb7 or if 2. a6 then Qxa6+ forces mate on move 3.
3B0165 [solution]	_____	3B0166 [solution] [Next]
3B0167 [solution]	_____	3B0168 [solution] [Next]
3B0165 1. ... cxb3 and now no choice but 2. axb3 Kxc6 3. Kc3 Kd5 and black will win the endgame because of his pawn majority on the queenside.	_____	3B0166 1. ... Rxc2+ and now if 2. Qb2 Rxb2+ 3. Ka3 Qxa1 mate or 2. Kb3 Rb2+ is the same thing or 2. Ka3 Qxa1+ 3. Kb3 Rb2 mate or Rxc3 mate.
3B0167 1. ... Nxg4! wins at least a pawn. If 2. fxg4? then Bxh4+ and now white either gives up the rook for the bishop or allows 3. Kd2? Qg5 mate!	_____	3B0168 1. ... Bc5+ and to prevent mate white has to give up much material. i.e. 2. Nd4 Bxd4+ 3. Qf2 Bxf2+ wins. Thanks to Eon on FICS.
3B0169 [solution]	_____	3B0170 [solution] [Next]
3B0171 [solution]	_____	3B0172 [solution] [Next]
3B0169 1. ... f2+ 2. Kf1? (Losing the Queen with Qxf2 is better.) Qh5! with the unstopable threat of 3. ... Qh1 mate. If 3. Qxf2 Qh1 mate	_____	3B0170 1. ... Nh5 forces the queen to move away from the defense of the Bishop on e5 that will drop next move. i.e. 2. Qh4 Qxh4 3. gxh4 Bxe4
3B0171 1. ... Bg7 and the white queen can no longer defend the knight on c5. if 2. Qf4 Be5 followed by 3. ...Rcx5 or 2. Ne4 Rxc1 3. Nxd6 Bxd4 wins.	_____	3B0172 1. ... Ne4+ white must play Kc1 or Ke1 or give up the queen. Now d2+ and 3. .... d1=Q is unstopable unless white gives up his queen to do so.
3B0173 [solution]	_____	3B0174 [solution] [Next]
3B0175 [solution]	_____	3B0176 [solution] [Next]
3B0173 Black played Rxc4 which stalemated. The fastest win is 1. ... Qf7+ 2. Kh6 Qg8!! 3. Kh5 Qh7 mate. I think that it is good to be able to see these patterns.	_____	3B0174 1. ... Rfc8 to stop Qh7 mate and threaten Qc2 mate. Now if 2. Bc3 then b4 wins the bishop because if the bishop moves then it is 3. ... Qxc2 mate.
3B0175 1. ... Qa2! with the threat of 2. ... Qb1 mate. White can delay it one move by moving any pieces to c2. i.e. 2. Bc2 (or Qc2) Qa1+ 3. Bb1 Qxb1 mate.	_____	3B0176 1. ... Qc7 with the double threat of 2. .... Bxd4 and Qc2+ leading to mate on move 3. White can delay the result with Qh7+ but he can't stop both threats
3B0177 [solution]	_____	3B0178 [solution] [Next]
3B0179 [solution]	_____	3B0180 [solution] [Next]
3B0177 The game continued .... 1. ... Ne4 2. Rxe4 Rxc1+ 3. Qc1 d2 white resigns because the pawn will queen. Thanks to Woodbury (on icc and fics) for submitting this one.	_____	3B0178 1. ... Qc4 threats the enemy queen and a pawn on e2. If 2. Qxc4 then Bxc4 and pawns are threatened on e2, b2 and a2. It seems certain that one of these would drop on move 3.
3B0179 1. ... Rxc2+ 2. Kb1 (not 2. Ka1 Rc1+ 3. Kb2 Rb1 mate) 2. ... Rg2+ (2. .... Rc7+ wins the Queen but is not as good as the mate coming up.) 3. King moves Rh1 mate.	_____	3B0180 1. ... Bc6! (to prevent Re8 mate) and the double threat of 2. Rxb2 and Rxg2+ are too much for white to handle. For example 2. Bc3 Rxg2+ 3. Kh1 Rc2+ wins the bishop.

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