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

EGTB: draw

# move score
1 f7 draw
2 Ra3 draw
3 Ra4 draw
4 Ra5 draw
5 Ra7 draw
6 Ra8 draw
7 Rb6 draw
8 Rc6 draw
9 Rd6 draw
10 Re6 draw
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves