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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Ra3 draw
3 Ra4 draw
4 Ra5 draw
5 Ra6 draw
6 Ra8 draw
7 Rb2 draw
8 Rc2 draw
9 Rd2 draw
10 Rg2 draw
11 Kc7 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Kdd7 loss in 2 half-moves
14 Kde7 loss in 2 half-moves
15 Ked7 loss in 2 half-moves
16 Kee7 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Kf8 loss in 2 half-moves
19 Ra1 loss in 2 half-moves
20 Re2 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rh2 loss in 2 half-moves