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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rd1 draw
3 Rd2 draw
4 Rd3 draw
5 Rd4 draw
6 Re8 draw
7 Rf8 draw
8 Rg8 draw
9 Rh8 draw
10 Ra8 loss in 2 half-moves
11 Rc8 loss in 2 half-moves
12 Rd5 loss in 2 half-moves
13 Rd6 loss in 2 half-moves
14 Rd7 loss in 2 half-moves