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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Ka6 draw
3 Ka8 draw
4 Kab7 draw
5 Kab8 draw
6 Kb6 draw
7 Kc7 draw
8 Kcb7 draw
9 Kcb8 draw
10 Kd7 draw
11 Kd8 draw
12 Re4 draw
13 Rf8 draw
14 Re1 loss in 2 half-moves
15 Re2 loss in 2 half-moves
16 Re3 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Re6 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves