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

EGTB: win in 4 half-moves

# move score
1 Kd8 win in 3 half-moves
2 Kef7 draw
3 Kef8 draw
4 Kgf7 draw
5 Kgf8 draw
6 Kh8 draw
7 Ra8 draw
8 Rb8 draw
9 Rc6 draw
10 Rc7 draw
11 Kd7 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Kg7 loss in 2 half-moves
14 Kh7 loss in 2 half-moves
15 Rc1 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rd8 loss in 2 half-moves