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 Kbb4 win in 5 half-moves
3 Kcc4 win in 5 half-moves
4 Kd4 win in 5 half-moves
5 Kbb6 win in 7 half-moves
6 Kcb6 win in 7 half-moves
7 Kcc6 win in 7 half-moves
8 Kd6 win in 7 half-moves
9 Ra8 win in 7 half-moves
10 Rb7 win in 7 half-moves
11 Rc8 win in 7 half-moves
12 Kcb4 draw
13 Kd5 draw
14 Rf8 draw
15 Ka4 loss in 2 half-moves
16 Ka5 loss in 2 half-moves
17 Ka6 loss in 2 half-moves
18 Kbc4 loss in 2 half-moves
19 Kbc6 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves
23 Rh8 loss in 2 half-moves