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 Re8 win in 5 half-moves
3 Rf8 win in 5 half-moves
4 Rg8 loss in 4 half-moves
5 Rh8 loss in 4 half-moves
6 g3 loss in 2 half-moves
7 g4 loss in 2 half-moves
8 Ne2 loss in 2 half-moves
9 Nf3 loss in 2 half-moves
10 Nh3 loss in 2 half-moves
11 Ra8 loss in 2 half-moves
12 Rc8 loss in 2 half-moves
13 Rd1 loss in 2 half-moves
14 Rd3 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Rd5 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Rd2 loss in 1 half-moves