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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rd4 win in 3 half-moves
3 Kc2 draw
4 Kc3 draw
5 Kc4 draw
6 Kd2 draw
7 Kd4 draw
8 Ke2 draw
9 Ke4 draw
10 Ra4 draw
11 Rb5 draw
12 Rb6 draw
13 Rb7 draw
14 Rb8 draw
15 Rc4 draw
16 Ke3 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves