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

EGTB: win in 2 half-moves

# move score
1 Rb2 win in 1 half-moves
2 Kb6 loss in 8 half-moves
3 Kb7 loss in 8 half-moves
4 Kb8 loss in 8 half-moves
5 Ra3 loss in 8 half-moves
6 Rb1 loss in 8 half-moves
7 Rb4 loss in 8 half-moves
8 Ka6 loss in 6 half-moves
9 Ka8 loss in 6 half-moves
10 Rc3 loss in 4 half-moves
11 Rh3 loss in 4 half-moves
12 Rb5 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 Rd3 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Rf3 loss in 2 half-moves
19 Rg3 loss in 1 half-moves