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

EGTB: win in 4 half-moves

# move score
1 Rh8 win in 3 half-moves
2 Kaa7 draw
3 Kab7 draw
4 Kba7 draw
5 Kbb7 draw
6 Rd2 draw
7 Rh1 draw
8 Rh3 draw
9 Rh4 draw
10 Kc7 loss in 2 half-moves
11 Kc8 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rc2 loss in 2 half-moves
15 Re2 loss in 2 half-moves
16 Rf2 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rh5 loss in 2 half-moves
19 Rh6 loss in 2 half-moves
20 Rh7 loss in 2 half-moves