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

EGTB: win in 4 half-moves

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