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

EGTB: win in 2 half-moves

# move score
1 Kb6 win in 1 half-moves
2 Rg4 win in 1 half-moves
3 Rh4 win in 1 half-moves
4 Ra2 win in 5 half-moves
5 Ra1 win in 7 half-moves
6 Ra3 win in 25 half-moves
7 Kb1 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Kb5 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kd1 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd4 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Ka6 loss in 1 half-moves