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

EGTB: loss in 5 half-moves

# move score
1 Rf1 loss in 4 half-moves
2 f6 loss in 2 half-moves
3 Ra4 loss in 2 half-moves
4 Re4 loss in 2 half-moves
5 Rf2 loss in 2 half-moves
6 Rf3 loss in 2 half-moves
7 Rg4 loss in 2 half-moves
8 Rh4 loss in 2 half-moves
9 Rb4 loss in 1 half-moves
10 Rc4 loss in 1 half-moves
11 Rd4 loss in 1 half-moves