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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Ke1 draw
3 Ke2 draw
4 Kf2 draw
5 Kg1 draw
6 Kg2 draw
7 Ra4 draw
8 Rb1 draw
9 Rb3 draw
10 Rb5 draw
11 Rh4 draw
12 Rb6 loss in 2 half-moves
13 Rb7 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd4 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rg4 loss in 2 half-moves