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

EGTB: win in 4 half-moves

# move score
1 Rc1 win in 3 half-moves
2 Rd1 draw
3 Rg4 draw
4 Rg5 draw
5 Rg6 draw
6 Rg7 draw
7 Rh1 draw
8 Ka3 loss in 2 half-moves
9 Kaa1 loss in 2 half-moves
10 Kab2 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kba1 loss in 2 half-moves
13 Kbb2 loss in 2 half-moves
14 Kc1 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Re1 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg8 loss in 2 half-moves