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

EGTB: win in 2 half-moves

# move score
1 Ra8 win in 1 half-moves
2 Kb5 loss in 2 half-moves
3 Kb7 loss in 2 half-moves
4 Kc6 loss in 2 half-moves
5 Kc7 loss in 2 half-moves
6 Rb7 loss in 2 half-moves
7 Rc8 loss in 2 half-moves
8 Rd8 loss in 2 half-moves
9 Re8 loss in 2 half-moves
10 Rf8 loss in 2 half-moves
11 Rg8 loss in 2 half-moves
12 Rh8 loss in 2 half-moves
13 Ka5 loss in 1 half-moves
14 Ka6 loss in 1 half-moves
15 Ka7 loss in 1 half-moves
16 Kc5 loss in 1 half-moves