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

EGTB: win in 4 half-moves

# move score
1 Ka4 win in 3 half-moves
2 Ka8 win in 3 half-moves
3 Kb4 win in 3 half-moves
4 Kb8 win in 3 half-moves
5 Ra4 win in 3 half-moves
6 K5a6 draw
7 K5b6 draw
8 K7a6 draw
9 K7b6 draw
10 Ra1 draw
11 Ra3 draw
12 Rb2 draw
13 Rc2 draw
14 Rd2 draw
15 Rh2 draw
16 Kb5 loss in 2 half-moves
17 Kb7 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rf2 loss in 2 half-moves
20 Rg2 loss in 2 half-moves