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

EGTB: win in 4 half-moves

# move score
1 Rc4 win in 3 half-moves
2 Rc7 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 Rb1 draw
8 Rc2 draw
9 Rc3 draw
10 Rc5 draw
11 Rc6 draw
12 Rc8 draw
13 Rd1 draw
14 Rf1 draw