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

EGTB: loss in 9 half-moves

# move score
1 Rb1 loss in 8 half-moves
2 Rb2 loss in 6 half-moves
3 Ka2 loss in 4 half-moves
4 Kb1 loss in 4 half-moves
5 Kb2 loss in 4 half-moves
6 Ra4 loss in 4 half-moves
7 Rb3 loss in 4 half-moves
8 Rb5 loss in 2 half-moves
9 Rb6 loss in 2 half-moves
10 Rb7 loss in 2 half-moves
11 Rb8 loss in 2 half-moves
12 Rc4 loss in 2 half-moves
13 Rd4 loss in 2 half-moves
14 Re4 loss in 2 half-moves
15 Rf4 loss in 2 half-moves
16 Rg4 loss in 2 half-moves
17 Rh4 loss in 2 half-moves