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

EGTB: win in 18 half-moves

# move score
1 R7a5 win in 17 half-moves
2 R7a6 win in 25 half-moves
3 Ra1 win in 35 half-moves
4 R4a5 win in 37 half-moves
5 R4a6 win in 37 half-moves
6 Ra2 win in 37 half-moves
7 Ra3 win in 37 half-moves
8 Rg4 win in 37 half-moves
9 Rh4 win in 37 half-moves
10 Rb4 win in 39 half-moves
11 Rc4 loss in 4 half-moves
12 Ka6 loss in 2 half-moves
13 Ka8 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Kb8 loss in 2 half-moves
16 Kc6 loss in 2 half-moves
17 Kc7 loss in 2 half-moves
18 Kc8 loss in 2 half-moves
19 Ra8 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Rf4 loss in 2 half-moves