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 Kc2 win in 3 half-moves
4 Kc3 win in 3 half-moves
5 Rb3 win in 9 half-moves
6 Ra3 win in 11 half-moves
7 Ka5 win in 15 half-moves
8 Ka7 draw
9 Kb7 draw
10 Kc1 draw
11 Kd1 draw
12 Ke1 draw
13 Ke2 draw
14 Ke3 draw
15 Rc3 draw
16 Rd4 draw
17 Rd5 draw
18 Rd6 draw
19 Rh3 draw
20 Rd7 loss in 2 half-moves
21 Rd8 loss in 2 half-moves
22 Re3 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rg3 loss in 2 half-moves