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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 K7b7 win in 5 half-moves
3 K7b8 win in 5 half-moves
4 K8b7 win in 5 half-moves
5 K8b8 win in 5 half-moves
6 Kb6 win in 5 half-moves
7 Re6 win in 5 half-moves
8 Re8 win in 5 half-moves
9 Ka6 draw
10 Rc7 draw
11 Rd7 draw
12 Re1 draw
13 Re2 draw
14 Rf7 draw
15 Re3 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Rg7 loss in 2 half-moves
19 Rh7 loss in 2 half-moves