[Retros] Games determined by their first and last moves

[Francois Labelle]

Here are the solutions to the problems in 5.0 moves.

1. c4 ... 5... mate by promoting to bishop
1. c4 d5 2. Qb3 dxc4 3. Kd1 c3 4. Kc2 cxd2 5. Qc3 d1=B#

1. e3 ... 5... mate by promoting to bishop
1. e3 d5 2. c3 d4 3. Qb3 dxe3 4. Kd1 exd2 5. Kc2 d1=B#

1. e4 ... 5... mate by promoting to bishop (similar to above)
1. e4 d5 2. c3 dxe4 3. Qb3 e3 4. Kd1 exd2 5. Kc2 d1=B#

1. d3 ... 5... RxR#
1. d3 h5 2. g4 hxg4 3. Nf3 Rxh2 4. Bh3 gxf3 5. Kf1 Rxh1#

1. Nf3 ... 5... Qe7#
1. Nf3 e5 2. Nd4 exd4 3. f3 d3 4. exd3 Bc5 5. Ke2 Qe7#

1. d3/d4 ... 5... Qe8#
1. d3 d5 2. Kd2 Kd7 3. Kc3 Kd6 4. Kb4 a5+ 5. Kb5 Qe8#
1. d4 d5 2. Kd2 Kd7 3. Kc3 Kd6 4. Kb4 a5+ 5. Kb5 Qe8#

1. e3/e4 ... 5... Kf8#
1. e3 e6 2. Ke2 Bd6 3. Kf3 Ke7 4. Kg4 h5+ 5. Kg5 Kf8#
1. e4 e6 2. Ke2 Bd6 3. Kf3 Ke7 4. Kg4 h5+ 5. Kg5 Kf8#

1. f3/f4 ... 5... Kf6# (P1000378)
1. f3 f5 2. Kf2 Kf7 3. Kg3 Qe8 4. Kh4 g5+ 5. Kh5 Kf6#
1. f4 f5 2. Kf2 Kf7 3. Kg3 Qe8 4. Kh4 g5+ 5. Kh5 Kf6#

1. e3 ... 5... Nxg4#
1. e3 h5 2. Qxh5 Nf6 3. Qg4 Rh3 4. f4 Rxe3+ 5. Kf2 Nxg4#

1. f4 ... 5... Rf5# (similar to P1013044 which is better)
1. f4 h5 2. Kf2 Rh6 3. Kg3 Rf6 4. Kh4 e6 5. Kg5 Rf5#

1. g4 ... 5... Bd5#
1. g4 d5 2. e4 Be6 3. exd5 Qxd5 4. Ke2 Qe5+ 5. Kf3 Bd5#

1. g4 ... 5... Bh3#
1. g4 d5 2. Bg2 Bxg4 3. Bxd5 Qxd5 4. Kf1 Qxh1 5. Qe1 Bh3#

1. Nf3 ... 5... Bf5## (double checkmate)
1. Nf3 d6 2. e3 Bg4 3. Ke2 e6 4. Kd3 Qh4 5. Ke4 Bf5#

1. f3 ... 5... Nf7.# (discovery checkmate)
1. f3 h5 2. Kf2 Nh6 3. Kg3 h4+ 4. Kxh4 f5 5. g3 Nf7#

     François