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 Kb6 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 Rd8 win in 3 half-moves
8 Kc5 win in 5 half-moves
9 Ka7 win in 7 half-moves
10 Ka8 win in 7 half-moves
11 Kbc7 win in 7 half-moves
12 Rc7 win in 7 half-moves
13 Re8 win in 7 half-moves
14 Rf8 win in 7 half-moves
15 Kbb7 draw
16 Kcc7 draw
17 Rg8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves