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 Ka5 win in 7 half-moves
3 Ka7 draw
4 Ra1 draw
5 Rb1 draw
6 Rf1 draw
7 Rg1 draw
8 Rh1 draw
9 Kb6 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Kc1 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ke1 loss in 2 half-moves
16 Ke2 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Re1 loss in 2 half-moves