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

EGTB: win in 4 half-moves

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