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

EGTB: win in 4 half-moves

# move score
1 Rc4 win in 3 half-moves
2 Rf4 win in 7 half-moves
3 Rg4 win in 7 half-moves
4 Rh4 win in 7 half-moves
5 g4 loss in 2 half-moves
6 Ne2 loss in 2 half-moves
7 Nf3 loss in 2 half-moves
8 Nh3 loss in 2 half-moves
9 Ra4 loss in 2 half-moves
10 Rb1 loss in 2 half-moves
11 Rb2 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves
16 Rd4 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rb5 loss in 1 half-moves