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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kd4 win in 3 half-moves
3 Ka1 win in 5 half-moves
4 Ka2 win in 5 half-moves
5 Kb1 win in 5 half-moves
6 Kbc2 win in 5 half-moves
7 Kc4 win in 5 half-moves
8 Kcc2 win in 5 half-moves
9 Rb1 win in 5 half-moves
10 Ka3 draw
11 Kbb3 draw
12 Rc2 draw
13 Kcb3 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Rd1 loss in 2 half-moves
18 Re1 loss in 2 half-moves
19 Rf1 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rh1 loss in 2 half-moves