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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Rf8 win in 1 half-moves
3 Ra7 draw
4 Rc7 draw
5 Rd7 draw
6 Rh7 draw
7 Re7 loss in 2 half-moves
8 Rg7 loss in 2 half-moves