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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rb2 draw
3 Rb6 draw
4 Rf3 draw
5 Rg3 draw
6 Rh3 draw
7 Rb1 loss in 6 half-moves
8 Rb7 loss in 6 half-moves
9 f8=B loss in 2 half-moves
10 f8=K loss in 2 half-moves
11 f8=N loss in 2 half-moves
12 f8=Q loss in 2 half-moves
13 f8=R loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Rd3 loss in 1 half-moves