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

EGTB: draw

# move score
1 Ra1 draw
2 Rb1 draw
3 Rc1 loss in 2 half-moves
4 Rd1 loss in 2 half-moves
5 Re1 loss in 2 half-moves
6 Rf1 loss in 2 half-moves
7 Rh1 loss in 2 half-moves