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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kd7 draw
3 Kd8 draw
4 Ke7 draw
5 Rc7 draw
6 Rd8 draw
7 Kf7 loss in 10 half-moves
8 Kf8 loss in 8 half-moves
9 Ra8 loss in 8 half-moves
10 Rc2 loss in 4 half-moves
11 Rc6 loss in 4 half-moves
12 Rc3 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rc5 loss in 2 half-moves
15 Rc1 loss in 1 half-moves