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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Rb6 draw
3 Rg7 draw
4 Nf7 loss in 2 half-moves
5 Ra6 loss in 2 half-moves
6 Rc6 loss in 2 half-moves
7 Rd6 loss in 2 half-moves
8 Re6 loss in 2 half-moves
9 Rf6 loss in 2 half-moves
10 Rg1 loss in 2 half-moves
11 Rg2 loss in 2 half-moves
12 Rg3 loss in 2 half-moves
13 Rg4 loss in 2 half-moves
14 Rg5 loss in 2 half-moves
15 Rh6 loss in 2 half-moves
16 d8=B loss in 1 half-moves
17 d8=K loss in 1 half-moves
18 d8=N loss in 1 half-moves
19 d8=Q loss in 1 half-moves
20 d8=R loss in 1 half-moves