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

EGTB: win in 4 half-moves

# move score
1 Rf3 win in 3 half-moves
2 Kb1 draw
3 Kb2 draw
4 Kc3 draw
5 Kcc2 draw
6 Kcd1 draw
7 Kd3 draw
8 Kdc2 draw
9 Kdd1 draw
10 Ke1 draw
11 Ke2 draw
12 Ke3 draw
13 Ra6 draw
14 Re6 draw
15 Rf1 draw
16 Rf2 draw
17 Rf4 draw
18 Rf5 draw
19 Rg6 draw
20 Rh6 draw
21 Rb6 loss in 2 half-moves
22 Rc6 loss in 2 half-moves
23 Rd6 loss in 2 half-moves
24 Rf7 loss in 2 half-moves
25 Rf8 loss in 2 half-moves