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

EGTB: win in 4 half-moves

# move score
1 Ra3 win in 3 half-moves
2 Rb3 draw
3 Rc3 draw
4 Re3 draw
5 Rh6 draw
6 Rh7 draw
7 Rh8 draw
8 g1=B loss in 2 half-moves
9 g1=K loss in 2 half-moves
10 g1=N loss in 2 half-moves
11 g1=Q loss in 2 half-moves
12 g1=R loss in 2 half-moves
13 Rd3 loss in 2 half-moves
14 Rf3 loss in 2 half-moves
15 Rg3 loss in 2 half-moves
16 Rh1 loss in 2 half-moves
17 Rh2 loss in 2 half-moves
18 Rh4 loss in 2 half-moves
19 Rh5 loss in 2 half-moves