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 Rb6 win in 3 half-moves
3 Rb7 loss in 4 half-moves
4 Na2 loss in 2 half-moves
5 Na6 loss in 2 half-moves
6 Nc2 loss in 2 half-moves
7 Nc6 loss in 2 half-moves
8 Nd3 loss in 2 half-moves
9 Nd5 loss in 2 half-moves
10 Ra8 loss in 2 half-moves
11 Rc8 loss in 2 half-moves
12 Rd8 loss in 2 half-moves
13 Re8 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg8 loss in 2 half-moves
16 Rh8 loss in 2 half-moves