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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Ka7 draw
3 Ka8 draw
4 Kc3 draw
5 Kc4 draw
6 Kc5 draw
7 Kc7 draw
8 Kc8 draw
9 Kd3 draw
10 Kd5 draw
11 Ra2 draw
12 Rc2 draw
13 Rd2 draw
14 Re2 draw
15 Rf1 draw
16 Rf6 draw
17 Rf7 draw
18 Rf8 draw
19 Kb7 loss in 2 half-moves
20 Ke3 loss in 2 half-moves
21 Ke4 loss in 2 half-moves
22 Ke5 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rf5 loss in 2 half-moves
26 Rg2 loss in 2 half-moves
27 Rh2 loss in 2 half-moves