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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kb5 win in 9 half-moves
3 K7b7 win in 11 half-moves
4 Ka5 win in 15 half-moves
5 K6b6 draw
6 K6b7 draw
7 K7b6 draw
8 Kb8 draw
9 Rc8 draw
10 Rd8 draw
11 Rh8 draw
12 Re8 loss in 2 half-moves
13 Rf8 loss in 2 half-moves
14 Rg8 loss in 2 half-moves