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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 Ka8 win in 3 half-moves
3 Kb3 win in 3 half-moves
4 Kb4 win in 3 half-moves
5 Kc4 win in 3 half-moves
6 Ra2 win in 3 half-moves
7 Rb3 win in 3 half-moves
8 Kb7 win in 9 half-moves
9 Kc7 win in 9 half-moves
10 Ra8 win in 9 half-moves
11 Kc8 win in 11 half-moves
12 Kb2 draw
13 Kc2 draw
14 Kd2 draw
15 Kd3 draw
16 Kd4 draw
17 Ra1 draw
18 Ra4 draw
19 Ra5 draw
20 Ra6 draw
21 Ra7 loss in 2 half-moves