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

EGTB: win in 4 half-moves

# move score
1 Kba2 win in 3 half-moves
2 Kba4 win in 3 half-moves
3 Kab2 win in 5 half-moves
4 Kbb2 win in 5 half-moves
5 Rb2 win in 5 half-moves
6 Rc1 win in 5 half-moves
7 Kaa2 draw
8 Kaa4 draw
9 Kab4 draw
10 Kbb4 draw
11 Kc2 draw
12 Ra1 draw
13 Rd1 draw
14 Rh1 draw
15 Kc3 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Re1 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves