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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kb6 draw
3 Ra1 draw
4 Ra3 draw
5 Ra5 draw
6 Rb2 draw
7 Rd2 draw
8 Rh2 draw
9 Ka7 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Ra4 loss in 2 half-moves
12 Rc2 loss in 2 half-moves
13 Re2 loss in 2 half-moves
14 Rf2 loss in 2 half-moves
15 Rg2 loss in 2 half-moves
16 Ka5 loss in 1 half-moves