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 Kc1 draw
7 Kd1 draw
8 Ke1 draw
9 Ke2 draw
10 Ra2 draw
11 Rb2 draw
12 Rc1 draw
13 Kc3 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ke3 loss in 2 half-moves
16 Rc3 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves