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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Ka5 draw
3 Ka6 draw
4 Ka7 draw
5 Kb1 draw
6 Kb2 draw
7 Kb5 draw
8 Kb7 draw
9 Kc1 draw
10 Kd1 draw
11 Kd2 draw
12 Ra1 draw
13 Ra3 draw
14 Ra6 draw
15 Ra7 draw
16 Ra8 draw
17 Rb2 draw
18 Kc3 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kc6 loss in 2 half-moves
21 Kc7 loss in 2 half-moves
22 Kd3 loss in 2 half-moves
23 Ra4 loss in 2 half-moves
24 Ra5 loss in 2 half-moves