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

EGTB: win in 2 half-moves

# move score
1 Rf5 win in 1 half-moves
2 Rf6 win in 1 half-moves
3 Rf7 win in 1 half-moves
4 Rf8 win in 1 half-moves
5 Bg1 loss in 2 half-moves
6 Bg3 loss in 2 half-moves
7 Nd1 loss in 2 half-moves
8 Nd3 loss in 2 half-moves
9 Ne4 loss in 2 half-moves
10 Nh1 loss in 2 half-moves
11 Nh3 loss in 2 half-moves
12 Ra4 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rc4 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rh4 loss in 2 half-moves
19 Ng4 loss in 1 half-moves
20 Rg4 loss in 1 half-moves