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

EGTB: win in 4 half-moves

# move score
1 Rh6 win in 3 half-moves
2 Kf7 draw
3 Kf8 draw
4 Kg6 draw
5 Kgg7 draw
6 Kgh8 draw
7 Kh6 draw
8 Khg7 draw
9 Khh8 draw
10 Rb1 draw
11 Rf1 draw
12 Rg1 draw
13 Rh5 draw
14 Ra1 loss in 2 half-moves
15 Rc1 loss in 2 half-moves
16 Rd1 loss in 2 half-moves
17 Re1 loss in 2 half-moves
18 Rh2 loss in 2 half-moves
19 Rh3 loss in 2 half-moves
20 Rh4 loss in 2 half-moves