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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.

6B0001 [solution]	_____	6B0002 [solution] [Next]
6B0003 [solution]	_____	6B0004 [solution] [Next]
6B0001 How to read chess notation. 1. ... R6xf2+ 2. Kg1 Rg2+ with mate by move 6.	_____	6B0002 1. ... Qf3+ wins the Bishop on f2, and will also give black a mate in 6.
6B0003 1. ... Rg2+ 2. Kc1 (Kd1 is worse) Nd3+!!! 3. Kb1 Qe1+ 4. Ka2 Rxc2+ mates on move 6.	_____	6B0004 1. ... Kc4 2. Na1 Kc3 traps the knight. 3. ... Kb2 4. ... Kxa1 will queen on move 6.
6B0005 [solution]	_____	6B0006 [solution] [Next]
6B0007 [solution]	_____	6B0008 [solution] [Next]
6B0005 Simply 1. ... Rh1+ 2. Re1 Rxe1+ 3. Kxe1 Ke3! 4. Kd1 Kf2 5. Kc1 Ke2 6. Kb1 Kd2 wins the pawn on move 7	_____	6B0006 1. ... c4 2. Kb4 Kb6 3. Kxc4 Ka5 4. Kc3 Kb5 5, Kd4 Kb4 6. Kd3 Kc5 6. Ke4 Kc4 wins the pawn and the game.
6B0007 1. ... Bxb6 2. Bxb6 a4 and white can't stop both pawns. For example 3. Bc5 h3! 4. Bd6 a3! 5. Bax3 h2! queens on move 6.	_____	6B0008 There is only one mate in 6. 1. ... Rc1+ 2. Kg2 Qxg4+ 3. Qg3 Rc2+ 4. Kf1 Qe2+ 5. Kg1 Rc1+ 6. Qe1 Rxe1 mate. Note that 4. Kg1 loses faster to Qd1+
6B0009 [solution]	_____	6B0010 [solution] [Next]
6B0011 [solution]	_____	6B0012 [solution] [Next]
6B0009 The game continued 1. ... Rxb2 2. Qxb2 Bxc3 3. Bh6+ Kg8 4. Qc2 f6 (seems unnecessary, but there might be a reason.) 5. Rfc1 Bxa1 6. Rxa1 and black has won a pawn!	_____	6B0010 1. .. Ng3+ 2. Kg1 Ne4+ 3. Kf1 (Kh1 Qh3!) Qh3+ 4. Ke1 Qxf3! (white can delay mate by giving up material, but the result is the same) 5. Bf2 or Qf2 Rg1+! 6. Bxg1 Nd3 mate!
6B0011 1. ... Na5+ and now 2. Kd3 Nf2+ of 2. Kd5 Be6+ 3. Ke4 Nf2 mate. So if 2. Kb5 c6+ 3. Ka4 b5+ 4. Nxb5 cxb5+ 5. Kxb5 Bd7+ 6. Ka6 Qb6 mate. Remind me to move this to the 6 move section.	_____	6B0012 Black can win easily by Kxb2 but much faster is 1. ... Kd2!!! (or Kd1) 2. Kg1 (Moving the b pawn is worse.) Ke2 (or Ke1) 3. Kh1 Kxf2! 4. b4 (or b3) cxb3 e.p. 5. c4 b2 6. c5 b1=Q (or b1=R) mate!!
6B0013 [solution]	_____	6B0014 [solution] [Next]
6B0015 [solution]	_____	6B0016 [solution] [Next]
6B0013 Not 1. ... Kg3 stalemate. Instead 1. ... g4 2. Kh2. Now 2. ... Kf2 is stalemate. And 2. ... g3+ 3. Kg1 is a draw. Instead. 2. ... g1=Q+ 3. Kxg1 Kg3 4. Kh1 Kf2 5. Kh2 g3+ 6. Kh1 g2+ wins	_____	6B0014 The game continued 1. ... Rxa1 2. Rxa1 Rd2! 3. Ra8+ Kg7 4. Ra7 Nxd5 5. Bxd5 Rxd5 6. Rxe7 but Black has improved his position by forcing the trades of pieces and getting two connected passwed pawns on d6 and c5.
6B0015 1. ... Qh4+ 2. b3 (else Kc1 then Rd1+ forces mate.) Qxa2+ and now if 3. Rb2 Rd2+ 4. Qxd2 Rxd2+ 5. Kxd2 Qxb2+ wins material or 3. Kc1 Rd2! and now 4. Nf5+ Bxf5 5. Qxh6+ (OR Rg1+) Kf7!! 6. Qh5+ Bg6 forces mate.	_____	6B0016 1. ... Qg1+ 2. Kg3 Qe1+!! Now if 3. Kh2 Bg1+ 4. Kh1 Bf2+ 5. KKh2 Bg3 mate. If instead 3. Kg4?? Qh4+ 4. Kf3 Qf2+ forces mate. If then 5. Ke4 Qe3+ 6. Kf5 Qf4 mate. Or 5. Kg4 Qf4+ 6. Kh5 Qh4 mate.
6B0017 [solution]	_____	6B0018 [solution] [Next]
6B0019 [solution]	_____	6B0190 [solution] [Next]
6B0017 1. ... Rf3+ 2. Kxf3 Qxd4 3. h6xg7 and now white threatens 4. Rh8 mate. So 3. ... Qd3+ and now if 4. Kf2 then Rc2+ 5. Kd1 Rc1+ 6. Kf2 Rf1 mate. If instead 4. Kf4 Rc4+ 5. Kg5 (Ke5 Qd4 mate) Qg6 mate.	_____	6B0018 The game went 1. ... Bxf2+ 2. Kxf2 (I guess Kf1 Ng4 is a little unclear, but favors black.) Ng4+ 3. Ke1 (other squares are no better) Qb6 threatening mate) 4. Rf1 Ne3 5. Qc1 Nxg2+ 6. Kd1 Ne3+ with a fork.
6B0019 1. ... Rb4! forces the trade of rooks. 2. Rxb4 axb4 Now if 3. Ke3 Ke5 wins the pawn on g5. If white goes for the b4 pawn Black will Queen the h file pawn first. So Instead 3. Kf3 Ke5 4. Kg4 Ke4 5. Kg3 Kf5 6. Kh4 Kf4 wins the pawn.	_____	6B0190 The question should be how can black NOT win this, because his position is so good. Good is 1. ... Rxd4 threatening the bishop and the pawn on c4. Also 1. ... Bxd4 threatening 2. Bxb2+ winning a piece on move 3. 2. Rd1?? Be3!!!!!!

John's Opening Repetoire
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