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