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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kaa2 win in 5 half-moves
3 Kaa4 win in 5 half-moves
4 Kab2 win in 5 half-moves
5 Kab4 win in 5 half-moves
6 Kba2 win in 5 half-moves
7 Kba4 win in 5 half-moves
8 Kbb2 win in 5 half-moves
9 Kbb4 win in 5 half-moves
10 Kc2 win in 5 half-moves
11 Kc4 win in 5 half-moves
12 Ra7 win in 5 half-moves
13 Rc7 win in 7 half-moves
14 Kc3 win in 15 half-moves
15 Rb5 draw
16 Rb6 draw
17 Rb8 draw
18 Rd7 draw
19 Rh7 draw
20 Re7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves