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

EGTB: win in 4 half-moves

# move score
1 Kbb6 win in 3 half-moves
2 Kd6 win in 3 half-moves
3 Rb6 win in 3 half-moves
4 Kbb4 win in 5 half-moves
5 Kcb4 win in 5 half-moves
6 Kcc4 win in 5 half-moves
7 Kd4 win in 5 half-moves
8 Kd5 win in 5 half-moves
9 Rb8 win in 5 half-moves
10 Rc7 win in 5 half-moves
11 Kcb6 draw
12 Kcc6 draw
13 Rh7 draw
14 Ka4 loss in 2 half-moves
15 Ka5 loss in 2 half-moves
16 Ka6 loss in 2 half-moves
17 Kbc4 loss in 2 half-moves
18 Kbc6 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rd7 loss in 2 half-moves
21 Re7 loss in 2 half-moves
22 Rf7 loss in 2 half-moves
23 Rg7 loss in 2 half-moves