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 Kcb6 win in 3 half-moves
3 Kcb7 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Kd6 win in 3 half-moves
6 Kd7 win in 3 half-moves
7 Rb8 win in 3 half-moves
8 Rd8 win in 3 half-moves
9 Kb8 win in 5 half-moves
10 Kc5 win in 5 half-moves
11 Ka8 win in 7 half-moves
12 Kc7 win in 7 half-moves
13 Ra8 win in 7 half-moves
14 Rc7 win in 7 half-moves
15 Re8 win in 7 half-moves
16 Rf8 win in 7 half-moves
17 Ka6 draw
18 Kab6 draw
19 Kab7 draw
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves