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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Kg1 draw
3 Kg2 draw
4 Kh2 draw
5 Ra1 draw
6 Rc2 draw
7 Rd1 draw
8 Re1 draw
9 Rg1 draw
10 Rc3 loss in 6 half-moves
11 Rc5 loss in 6 half-moves
12 Rc6 loss in 6 half-moves
13 Rc7 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rc4 loss in 1 half-moves