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

EGTB: win in 4 half-moves

# move score
1 Rf7 win in 3 half-moves
2 Rf8 win in 3 half-moves
3 Ra3 win in 5 half-moves
4 Rb3 win in 5 half-moves
5 Ka6 draw
6 Kaa7 draw
7 Kab8 draw
8 Kb6 draw
9 Kba7 draw
10 Kbb8 draw
11 Kc6 draw
12 Kc7 draw
13 Kc8 draw
14 Rf4 draw
15 Rf5 draw
16 Rf6 draw
17 Rg3 draw
18 Rh3 draw
19 Rc3 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Re3 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rf2 loss in 2 half-moves