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 Kc2 win in 3 half-moves
3 Ka2 win in 5 half-moves
4 Kb2 win in 5 half-moves
5 Ka1 draw
6 Ka5 draw
7 Ka7 draw
8 Kb6 draw
9 Kb7 draw
10 Kc1 draw
11 Ra8 draw
12 Rb8 draw
13 Rc3 draw
14 Rd8 draw
15 Rh8 draw
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Rc7 loss in 2 half-moves
22 Re8 loss in 2 half-moves
23 Rf8 loss in 2 half-moves
24 Rg8 loss in 2 half-moves