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

EGTB: win in 4 half-moves

# move score
1 Ra1 win in 3 half-moves
2 Rb1 win in 3 half-moves
3 Rh8 win in 5 half-moves
4 K6b6 draw
5 K6b7 draw
6 K7b6 draw
7 K7b7 draw
8 Ka5 draw
9 Ka8 draw
10 Kb5 draw
11 Kb8 draw
12 Rc1 draw
13 Rd1 draw
14 Rh2 draw
15 Rh3 draw
16 Rh4 draw
17 Re1 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh5 loss in 2 half-moves
21 Rh6 loss in 2 half-moves
22 Rh7 loss in 2 half-moves