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 Ka6 win in 5 half-moves
3 Kb6 win in 5 half-moves
4 Kaa7 draw
5 Kab8 draw
6 Kbb8 draw
7 Ra4 draw
8 Rb2 draw
9 Rb3 draw
10 Rg4 draw
11 Rh4 draw
12 Kba7 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Kc8 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rd4 loss in 2 half-moves
20 Re4 loss in 2 half-moves
21 Rf4 loss in 2 half-moves