Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kb6 draw
5 Kb7 draw
6 Kd4 draw
7 Ke4 draw
8 Rc1 draw
9 Rc2 draw
10 Rc4 draw
11 Rc7 draw
12 Rc8 draw
13 Kc2 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Ke2 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Kc4 loss in 1 half-moves