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 Rh7 win in 3 half-moves
3 Rh8 win in 3 half-moves
4 Ka6 draw
5 Kaa8 draw
6 Kab7 draw
7 Kb6 draw
8 Kba8 draw
9 Kbb7 draw
10 Kc7 draw
11 Kc8 draw
12 Ra3 draw
13 Re3 draw
14 Rf3 draw
15 Rg3 draw
16 Rh4 draw
17 Rh5 draw
18 Rb3 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Rh1 loss in 2 half-moves
22 Rh2 loss in 2 half-moves