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

EGTB: draw

# move score
1 Rb6 draw
2 Rb7 draw
3 Rb8 draw
4 Kf1 loss in 2 half-moves
5 Kf2 loss in 2 half-moves
6 Kg2 loss in 2 half-moves
7 Kh1 loss in 2 half-moves
8 Kh2 loss in 2 half-moves
9 Ra4 loss in 2 half-moves
10 Rb1 loss in 2 half-moves
11 Rb2 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Re4 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
18 Rb5 loss in 1 half-moves
19 Rd4 loss in 1 half-moves