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 Rd1 win in 1 half-moves
3 Re1 win in 1 half-moves
4 Kb4 loss in 2 half-moves
5 Kb5 loss in 2 half-moves
6 Ra2 loss in 2 half-moves
7 Ra3 loss in 2 half-moves
8 Rb1 loss in 2 half-moves
9 Rc1 loss in 2 half-moves
10 Rf1 loss in 2 half-moves
11 Rg1 loss in 2 half-moves
12 Rh1 loss in 2 half-moves
13 Ka4 loss in 1 half-moves
14 Ka6 loss in 1 half-moves
15 Ra4 loss in 1 half-moves