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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Ra6 win in 5 half-moves
3 K7g7 draw
4 K7g8 draw
5 K8g7 draw
6 K8g8 draw
7 Ra5 draw
8 Ra7 draw
9 Rb1 draw
10 Rc1 draw
11 Rd1 draw
12 Re1 draw
13 Kg6 loss in 2 half-moves
14 Kh6 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh1 loss in 2 half-moves