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

EGTB: win in 4 half-moves

# move score
1 Rf3 win in 3 half-moves
2 g5 loss in 2 half-moves
3 Na1 loss in 2 half-moves
4 Na3 loss in 2 half-moves
5 Nb4 loss in 2 half-moves
6 Nd4 loss in 2 half-moves
7 Ne1 loss in 2 half-moves
8 Ra3 loss in 2 half-moves
9 Rb3 loss in 2 half-moves
10 Rc3 loss in 2 half-moves
11 Rd3 loss in 2 half-moves
12 Re1 loss in 2 half-moves
13 Re2 loss in 2 half-moves
14 Re4 loss in 2 half-moves
15 Re7 loss in 2 half-moves
16 Rh3 loss in 2 half-moves
17 Re5 loss in 1 half-moves
18 Re6 loss in 1 half-moves
19 Re8 loss in 1 half-moves
20 Rg3 loss in 1 half-moves