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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Kcb7 win in 3 half-moves
3 Ra8 win in 3 half-moves
4 Kb5 win in 5 half-moves
5 Kbc6 win in 9 half-moves
6 Kc5 win in 9 half-moves
7 Rb8 win in 9 half-moves
8 Ka5 draw
9 Ka6 draw
10 Ka7 draw
11 Kbb7 draw
12 Kcc6 draw
13 Rh8 draw
14 Kd6 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves