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

EGTB: win in 6 half-moves

# move score
1 Kb8 win in 5 half-moves
2 K8b7 draw
3 Rc7 draw
4 K6b7 loss in 2 half-moves
5 Ka5 loss in 2 half-moves
6 Kb5 loss in 2 half-moves
7 Kb6 loss in 2 half-moves
8 Rb7 loss in 2 half-moves
9 Rd7 loss in 2 half-moves
10 Re7 loss in 2 half-moves
11 Rf7 loss in 2 half-moves
12 Rg7 loss in 2 half-moves
13 Rh7 loss in 2 half-moves