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

EGTB: win in 6 half-moves

# move score
1 Ra4 win in 5 half-moves
2 Ka7 draw
3 Ka8 draw
4 Kb7 draw
5 Kbc7 draw
6 Kbc8 draw
7 Kc6 draw
8 Kd6 draw
9 Kd8 draw
10 Kdc7 draw
11 Kdc8 draw
12 Ke6 draw
13 Ke7 draw
14 Ke8 draw
15 Rb4 draw
16 Rf3 draw
17 Rf5 draw
18 Rf6 draw
19 Rf7 draw
20 Rf8 draw
21 Rg4 draw
22 Rh4 draw
23 Rc4 loss in 2 half-moves
24 Rd4 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Rf1 loss in 2 half-moves
27 Rf2 loss in 2 half-moves