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

EGTB: win in 4 half-moves

# move score
1 R2a4 win in 3 half-moves
2 Kc1 draw
3 R5a4 draw
4 Ra6 draw
5 Ra7 draw
6 Ra8 draw
7 Rc5 draw
8 Rb5 loss in 4 half-moves
9 Ka1 loss in 2 half-moves
10 Ka3 loss in 2 half-moves
11 Kb1 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 R2a3 loss in 2 half-moves
15 R5a3 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Rd5 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rg5 loss in 2 half-moves
21 Rh5 loss in 2 half-moves
22 Kc2 loss in 1 half-moves