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 Ka7 draw
6 Ka8 draw
7 Kbb6 draw
8 Kbb8 draw
9 Kbc6 draw
10 Kbc8 draw
11 Kcb6 draw
12 Kcb8 draw
13 Kcc6 draw
14 Kcc8 draw
15 Kd6 draw
16 Kd7 draw
17 Kd8 draw
18 Ra3 draw
19 Re3 draw
20 Rf3 draw
21 Rg3 draw
22 Rh4 draw
23 Rh5 draw
24 Rb3 loss in 2 half-moves
25 Rc3 loss in 2 half-moves
26 Rd3 loss in 2 half-moves
27 Rh1 loss in 2 half-moves
28 Rh2 loss in 2 half-moves