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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.

4B0041 [solution]	_____	4B0042 [solution]      [Next]
4B0043 [solution]	_____	4B0044 [solution]      [Next]
4B0041 1. ... Rxg2+ 2. Kh1 (Kf1 then Qxd3+ mates next move) Rg6+ 3. Kh2 Rxh6+ 4. Kg3 (Kg1 and Rh1 mate) and black wins	_____	4B0042 1. ... Nd3 threatens 2. ... Nf2+ and then d1=Q So 2. Kg1 Nxb2 wins a pawn. 3. Kf1 d1=Q+ 4. Bxd1 Nxd1 wins a bishop
4B0043 1. ... Rd2+ will force mate. If 2. Kb1 Nc3+ 3. Kc1 Rd1+ 4. Kb2 Na4 mate. If instead 2. Ka1 Bc3+ 3. Kb1 Rd1 mate.	_____	4B0044 1. ... Kd7 threatens Ra8 and then Ra1 mate. So 2. g4 Bg6 3. f4 Be4 4. Bg2 Bxg2 stops the mate but at the cost of a bishop.
4B0045 [solution]	_____	4B0046 [solution]      [Next]
4B0047 [solution]	_____	4B0048 [solution]      [Next]
4B0045 1. ... Qg1+ 2. ... Qf2+ 3. Kd3 Qd2+ and now either 4. Kc4 Qc2 mate or 4. Ke4 Qxe1 winning a rook and a great positon	_____	4B0046 1. ... Qxe2+ 2. Bxe2 Bf5 and white couldn't stop 3. ... Bb1 and 4. ... Bxa2 which was plenty enough for black to earn a victory
4B0047 The game continued 1. ... Nc4! with threats on both the rook and the bishop. 2. bxc4 Rxb2 3. Rxb2 Bxb2 4. Rb1 Qxa2 winning a pawn.	_____	4B0048 1. ... Rxe2 2. Rxe2 (forced) Qxe2! and good luck trying to stop the pawn from queening on move 4. i.e. 3. Qxe2 dxe2 or 3. Qa4 d2.
4B0049 [solution]	_____	4B0050 [solution]      [Next]
4B0051 [solution]	_____	4B0052 [solution]      [Next]
4B0049 It is easier for Black to stop the White pawns than for White to stop the Back pawns. 1. ... a4! will queen a pawn on move 4.	_____	4B0050 1. ... Qxf5+ if 2. Bf3 Qxb5. If instead 2. ke1 Qf2+ 3. Kd1 Qd2 mate. If 2. Kg1 Rc1+ 3. Kh2 Qf4+ followed by mate on move 4.
4B0051 1. ... Bc5+ and now if 2. Kf1 Qxh1+ wins but if instead 2. Be3 Bxe3+ 3. Ke2 Bd4+ and now 3. ... Kd2 4. Qe3 mate or 3. ... Kf1 4. Qxh1+ wins	_____	4B0052 1. ... Rxb3+! 2. Kc2 Rb2+! 3. Kxb2 Qxd2+ wins. If instead 2. Kc1 and now either Qc4+ 3. Kd1 Rb1+ or 2. ... Rb1+ 3. Kc2 Rb2+ 4. Kxb2 Qxd2+ wins
4B0053 [solution]	_____	4B0054 [solution]      [Next]
4B0055 [solution]	_____	4B0056 [solution]      [Next]
4B0053 1. ... Rxg1+ and now 2. Bxg1 Qxf3+ wins. So instead 2. Kxg1 Rg8+ 3. Kh1 (Rg7 just delays things one move) and now either Qxf3+ or Ng3+ mates on move 4.	_____	4B0054 1. ... cxb3 wins at least a pawn. If 2. Nxb6 bxc2 3. Nxa8 cxb1 4. Rxb1 Rxa8 wins a piece. If instead 2. axb3 Qxb3 wins the pawn with a fine position.
4B0055 1. ... Ra2 is crushing, because none of the other white pieces can assist in the defense of g2. If 2. Kh1 Rxg2 3. Qb1 Qg3 forces mate on move 4.	_____	4B0056 1. ... Rxe2! 2. Qxe2 Qxf4+ 3. Rd2 and now Qxf3 or Bxf3 4. Qf2 g5 - although black isn't necessarily winning, he has gained material when he was losing.
4B0057 [solution]	_____	4B0058 [solution]      [Next]
4B0059 [solution]	_____	4B0060 [solution]      [Next]
4B0057 1. ... Rf8!! with the powerful threat of Qf1 mate. if 2. Ke2 Qf1 mate. If 2. Rg1 Qf2+ 3. Kd1 Ba4+ 4. Rc2 Bxc2 mate. If 2. Kd1 Ba4+ and 3. ... Qf1 mate	_____	4B0058 1. ... Rxe2! 2. Qxe2 Qxf4+ 3. Rd2 and now Qxf3 or Bxf3 4. Qf2 g5 - although black isn't necessarily winning, he has gained material when he was losing.
4B0059 1. ... Bd5!!! 2. Rxb6 Bxg2! with the threat of 3. ... Nf3 mate. if 3. Kh2 Nf3+ wins the rook on e1. If instead 3. f3 Bd5+ 4. Kh2 Nxf3+ wins the rook on e1	_____	4B0060 1. ... Nxc3 with double attack on the Queen. If 2. Qd2 Ne2+ forks the king and roo,. If instead 2. Qxe7 then Ne2+ 3. Qxe2 Qxc1+ and 4. ... Qxa3 wins the exchange.

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