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 Kb5 win in 3 half-moves
3 Kc1 win in 3 half-moves
4 Kc2 win in 3 half-moves
5 Ra7 win in 3 half-moves
6 Rb7 win in 3 half-moves
7 Ka3 win in 5 half-moves
8 Kb2 win in 5 half-moves
9 Kb3 win in 5 half-moves
10 Ka1 draw
11 Ka2 draw
12 Ka5 draw
13 Rc1 draw
14 Rc5 draw
15 Rc6 draw
16 Rc8 draw
17 Rd7 draw
18 Re7 draw
19 Rc2 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rf7 loss in 2 half-moves
23 Rg7 loss in 2 half-moves
24 Rh7 loss in 2 half-moves