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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Kaa3 draw
3 Kaa5 draw
4 Kab3 draw
5 Kab5 draw
6 Kbb3 draw
7 Kbb5 draw
8 Ra7 draw
9 Rb6 draw
10 Rb8 draw
11 Rd7 draw
12 Kba3 loss in 2 half-moves
13 Kba5 loss in 2 half-moves
14 Kc3 loss in 2 half-moves
15 Kc4 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves