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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Rb2 win in 3 half-moves
3 Kg1 draw
4 Kg2 draw
5 Kh2 draw
6 Ra4 draw
7 Rb3 draw
8 Rb5 draw
9 Rc4 draw
10 Rd4 draw
11 Re4 draw
12 Rb6 loss in 2 half-moves
13 Rb7 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rf4 loss in 2 half-moves
16 Rg4 loss in 2 half-moves
17 Rh4 loss in 2 half-moves