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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Re1 win in 3 half-moves
4 Rg1 win in 3 half-moves
5 Rh1 win in 3 half-moves
6 Ra1 draw
7 Rb2 draw
8 Rb4 draw
9 Rb5 draw
10 Rb7 draw
11 Rb8 draw
12 Rc1 draw
13 Rd1 draw
14 Rf1 draw