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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Rf4 win in 3 half-moves
4 Rf7 win in 3 half-moves
5 Ke5 win in 7 half-moves
6 Ke6 win in 7 half-moves
7 Kb4 draw
8 Kc7 draw
9 Kcc6 draw
10 Kcd5 draw
11 Kd7 draw
12 Kdc6 draw
13 Kdd5 draw
14 Ke7 draw
15 Ra3 draw
16 Re3 draw
17 Rf5 draw
18 Rf6 draw
19 Rf8 draw
20 Rg3 draw
21 Rh3 draw
22 Kc4 loss in 2 half-moves
23 Kd4 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rc3 loss in 2 half-moves
26 Rd3 loss in 2 half-moves
27 Rf1 loss in 2 half-moves
28 Rf2 loss in 2 half-moves