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 Ka6 draw
3 Ka8 draw
4 Kb7 draw
5 Kb8 draw
6 Ra5 draw
7 Ra6 draw
8 Re4 draw
9 Rg4 draw
10 Rh4 draw
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Ra3 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 Rf4 loss in 2 half-moves