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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 f8=K draw
3 Ra8 draw
4 Rb1 draw
5 Rb5 draw
6 Rb7 draw
7 Rc8 draw
8 Rf8 draw
9 Rh8 draw
10 f8=B 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 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rb6 loss in 1 half-moves