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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kh7 win in 5 half-moves
3 Rg8 win in 5 half-moves
4 Kg7 win in 7 half-moves
5 K5g5 draw
6 K5g6 draw
7 K6g5 draw
8 K6g6 draw
9 Kg4 draw
10 Kh4 draw
11 Ra8 draw
12 Rb1 draw
13 Rb2 draw
14 Rb3 draw
15 Rf8 draw
16 Rh8 draw
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Rd8 loss in 2 half-moves
22 Re8 loss in 2 half-moves