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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Ra5 draw
3 Ra6 draw
4 Ra7 draw
5 Ra8 draw
6 Rd4 draw
7 Re4 draw
8 Rf4 draw
9 Rg4 draw
10 Rh4 draw
11 Kf7 loss in 2 half-moves
12 Kf8 loss in 2 half-moves
13 Kgh7 loss in 2 half-moves
14 Kgg7 loss in 1 half-moves
15 Khg7 loss in 1 half-moves
16 Khh7 loss in 1 half-moves
17 Ra1 loss in 1 half-moves
18 Ra2 loss in 1 half-moves
19 Ra3 loss in 1 half-moves
20 Rc4 loss in 1 half-moves