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 Ra1 win in 5 half-moves
4 Kaa7 draw
5 Kab7 draw
6 Kba7 draw
7 Kbb7 draw
8 Kc7 draw
9 Kc8 draw
10 Re1 draw
11 Rf5 draw
12 Rf6 draw
13 Rg1 draw
14 Rh1 draw
15 Rb1 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rd1 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf4 loss in 2 half-moves