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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ka5 draw
3 Ka6 draw
4 Kb5 draw
5 Kc5 draw
6 Rd4 draw
7 Re4 draw
8 Rf5 draw
9 Rf6 draw
10 Rf7 draw
11 Rh4 draw
12 Ka7 loss in 4 half-moves
13 Kb7 loss in 4 half-moves
14 Kc6 loss in 4 half-moves
15 Kc7 loss in 4 half-moves
16 Rf8 loss in 4 half-moves
17 Ra4 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rf1 loss in 2 half-moves
20 Rf2 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rf3 loss in 1 half-moves