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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb8 win in 3 half-moves
3 Kc7 draw
4 Kc8 draw
5 Kd7 draw
6 Ke7 draw
7 Ke8 draw
8 Kf6 draw
9 Kf7 draw
10 Kf8 draw
11 Kg6 draw
12 Kg8 draw
13 Kh6 draw
14 Kh7 draw
15 Kh8 draw
16 Ra4 draw
17 Rb5 draw
18 Rb6 draw
19 Rc4 draw
20 Rd4 draw
21 Rh4 draw
22 Rb1 loss in 2 half-moves
23 Rb2 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Rf4 loss in 2 half-moves
27 Rg4 loss in 2 half-moves