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

EGTB: win in 2 half-moves

# move score
1 a3 win in 1 half-moves
2 Rc1 win in 1 half-moves
3 Rc7 win in 1 half-moves
4 Ra8 loss in 2 half-moves
5 Rb8 loss in 2 half-moves
6 Rc2 loss in 2 half-moves
7 Rc4 loss in 2 half-moves
8 Rc5 loss in 2 half-moves
9 Rc6 loss in 2 half-moves
10 Rd8 loss in 2 half-moves
11 Re8 loss in 2 half-moves
12 Rf8 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Rc3 loss in 1 half-moves
15 Rh8 loss in 1 half-moves