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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Rf8 win in 9 half-moves
3 Rg8 win in 9 half-moves
4 Rh8 win in 9 half-moves
5 Rc4 draw
6 Re8 loss in 4 half-moves
7 b5 loss in 2 half-moves
8 Ra8 loss in 2 half-moves
9 Rc1 loss in 2 half-moves
10 Rc2 loss in 2 half-moves
11 Rc3 loss in 2 half-moves
12 Rc5 loss in 2 half-moves
13 Rc6 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Rd8 loss in 2 half-moves