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

EGTB: loss in 9 half-moves

# move score
1 Kb1 loss in 8 half-moves
2 Kc1 loss in 8 half-moves
3 Kc3 loss in 8 half-moves
4 Rb1 loss in 8 half-moves
5 Kb3 loss in 6 half-moves
6 Kd1 loss in 4 half-moves
7 Kd2 loss in 4 half-moves
8 Ra2 loss in 4 half-moves
9 Kd3 loss in 2 half-moves
10 Rb3 loss in 2 half-moves
11 Rb4 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves