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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kd4 win in 1 half-moves
3 Rh8 draw
4 Kb5 loss in 2 half-moves
5 Kb6 loss in 2 half-moves
6 Kc6 loss in 2 half-moves
7 Kd5 loss in 2 half-moves
8 Kd6 loss in 2 half-moves
9 Ra8 loss in 2 half-moves
10 Rb8 loss in 2 half-moves
11 Rc6 loss in 2 half-moves
12 Rc7 loss in 2 half-moves
13 Rd8 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rf8 loss in 2 half-moves
16 Rg8 loss in 2 half-moves
17 Kc4 loss in 1 half-moves