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

EGTB: win in 4 half-moves

# move score
1 Ka1 win in 3 half-moves
2 Ka5 win in 3 half-moves
3 Kb1 win in 3 half-moves
4 Kb2 win in 3 half-moves
5 Kb4 win in 3 half-moves
6 Kb5 win in 3 half-moves
7 K2a3 draw
8 K2b3 draw
9 K4a3 draw
10 K4b3 draw
11 Ra7 draw
12 Rb8 draw
13 Rc8 draw
14 Rd8 draw
15 Re8 draw
16 Rf8 draw
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves