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

EGTB: win in 8 half-moves

# move score
1 Rb1 win in 7 half-moves
2 Rb3 win in 7 half-moves
3 Rb5 win in 9 half-moves
4 Rb2 win in 11 half-moves
5 g5 draw
6 Nb6 draw
7 Ra4 loss in 2 half-moves
8 Rb6 loss in 2 half-moves
9 Rb7 loss in 2 half-moves
10 Rc4 loss in 2 half-moves
11 Rd4 loss in 2 half-moves
12 Re4 loss in 2 half-moves
13 Nc7 loss in 1 half-moves
14 Rb8 loss in 1 half-moves
15 Rf4 loss in 1 half-moves