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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Rf1 win in 3 half-moves
3 Rb8 draw
4 Re8 draw
5 Rf3 draw
6 Rf7 draw
7 Rg3 draw
8 Rg7 draw
9 Rh8 draw
10 Rc8 loss in 2 half-moves
11 Rd8 loss in 2 half-moves
12 Rf2 loss in 2 half-moves
13 Rf4 loss in 2 half-moves
14 Rf5 loss in 2 half-moves
15 Rf6 loss in 2 half-moves
16 Rg1 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rg5 loss in 2 half-moves
20 Rg6 loss in 2 half-moves