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

EGTB: win in 4 half-moves

# move score
1 Ra2 win in 3 half-moves
2 Ka2 draw
3 Kb1 draw
4 Kb2 draw
5 Ke1 draw
6 Ke2 draw
7 Kf2 draw
8 Kg1 draw
9 Kg2 draw
10 Ra4 draw
11 Ra5 draw
12 Ra6 draw
13 Rh3 draw
14 Ra7 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rd3 loss in 2 half-moves
19 Re3 loss in 2 half-moves
20 Rf3 loss in 2 half-moves
21 Rg3 loss in 2 half-moves