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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Kaa4 win in 5 half-moves
3 Kaa6 win in 5 half-moves
4 Kab4 win in 5 half-moves
5 Kab6 win in 5 half-moves
6 Kbb4 win in 5 half-moves
7 Ra8 win in 5 half-moves
8 Rc8 win in 5 half-moves
9 Re8 win in 11 half-moves
10 Rf8 win in 11 half-moves
11 Rg8 win in 11 half-moves
12 Rh8 win in 11 half-moves
13 Rb7 draw
14 Rd8 draw
15 Kba4 loss in 2 half-moves
16 Kba6 loss in 2 half-moves
17 Kbb6 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kc6 loss in 2 half-moves