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

EGTB: win in 2 half-moves

# move score
1 Rf4 win in 1 half-moves
2 Kb6 draw
3 Kd6 draw
4 Ra1 draw
5 Ra2 draw
6 Rb4 draw
7 Rb6 draw
8 Rc4 draw
9 Rd4 draw
10 Re4 draw
11 Kb5 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 R4a5 loss in 2 half-moves
18 R6a5 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Ra7 loss in 2 half-moves
21 Ra8 loss in 2 half-moves
22 Rg4 loss in 2 half-moves
23 Rh4 loss in 2 half-moves