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