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