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

EGTB: win in 2 half-moves

# move score
1 Ra4 win in 1 half-moves
2 Rf6 draw
3 Rg6 draw
4 Rh6 draw
5 Ka1 loss in 2 half-moves
6 Ka3 loss in 2 half-moves
7 Kb1 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kb3 loss in 2 half-moves
10 Ra3 loss in 2 half-moves
11 Ra5 loss in 2 half-moves
12 Ra7 loss in 2 half-moves
13 Ra8 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Re6 loss in 2 half-moves
17 Rc6 loss in 1 half-moves