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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Nd4 win in 5 half-moves
3 Rb8 win in 7 half-moves
4 Na1 loss in 2 half-moves
5 Na5 loss in 2 half-moves
6 Nc1 loss in 2 half-moves
7 Nc5 loss in 2 half-moves
8 Nd2 loss in 2 half-moves
9 Ra4 loss in 2 half-moves
10 Rb6 loss in 2 half-moves
11 Rb7 loss in 2 half-moves
12 Rc4 loss in 2 half-moves
13 Rd4 loss in 2 half-moves
14 Re4 loss in 2 half-moves
15 Rg4 loss in 2 half-moves
16 Rh4 loss in 2 half-moves
17 Rf4 loss in 1 half-moves