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

EGTB: win in 4 half-moves

# move score
1 Kg2 win in 3 half-moves
2 Ra2 draw
3 Rb2 draw
4 Kd3 loss in 2 half-moves
5 Kd4 loss in 2 half-moves
6 Kd5 loss in 2 half-moves
7 Ke3 loss in 2 half-moves
8 Ke5 loss in 2 half-moves
9 Kf3 loss in 2 half-moves
10 Kf4 loss in 2 half-moves
11 Kf5 loss in 2 half-moves
12 Kg3 loss in 2 half-moves
13 Kg4 loss in 2 half-moves
14 Kh4 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rd2 loss in 2 half-moves
17 Re2 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rh1 loss in 2 half-moves