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 Re4 win in 3 half-moves
4 Rf4 win in 3 half-moves
5 Ke7 draw
6 Ke8 draw
7 Kff7 draw
8 Kfg7 draw
9 Kgf7 draw
10 Kgg7 draw
11 Kh7 draw
12 Kh8 draw
13 Ra4 draw
14 Rb3 draw
15 Rb5 draw
16 Rb6 draw
17 Rc4 draw
18 Rd4 draw
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves