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

EGTB: win in 4 half-moves

# move score
1 Rc8 win in 3 half-moves
2 Ka6 draw
3 Kaa8 draw
4 Kab7 draw
5 Kb6 draw
6 Kba8 draw
7 Kbb7 draw
8 Kc7 draw
9 Kc8 draw
10 Rd8 draw
11 Re2 draw
12 Rf8 draw
13 Re1 loss in 2 half-moves
14 Re3 loss in 2 half-moves
15 Re4 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves