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

EGTB: win in 4 half-moves

# move score
1 R6a5 win in 3 half-moves
2 R4a5 draw
3 Ra1 draw
4 Ra2 draw
5 Ra3 draw
6 Rc4 draw
7 Rc6 draw
8 Rd4 draw
9 Re4 draw
10 Kc5 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke5 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Ra8 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb6 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves
23 Kc6 loss in 1 half-moves
24 Ke6 loss in 1 half-moves