% Francois Labelle & computer, March 21, 2016
% After each of these games Black can mate in 4 moves.

1. d3 e6 2. Kd2 Bd6 3. Ke3

1. e4 e5 2. Ke2 Bc5 3. Kf3

1. d3 e5 2. Kd2 Nh6 3. Ke3
1. d3 Nh6 2. Kd2 e5 3. Ke3

1. d3 e5 2. Kd2 h5 3. Ke3
1. d3 h5 2. Kd2 e5 3. Ke3

1. e4 e6 2. f4 Bc5 3. g4
(+ 5 other ways of reaching the same position)

1. e4 e5 2. f4 Bc5 3. g4
(+ 5 other ways of reaching the same position)