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 Ra5 draw
4 Rb4 draw
5 Rb7 draw
6 Rb3 loss in 4 half-moves
7 Kg1 loss in 2 half-moves
8 Kg2 loss in 2 half-moves
9 Kh2 loss in 2 half-moves
10 Rb6 loss in 2 half-moves
11 Rb8 loss in 2 half-moves
12 Rc5 loss in 2 half-moves
13 Rd5 loss in 2 half-moves
14 Re5 loss in 2 half-moves
15 Rg5 loss in 2 half-moves
16 Rf5 loss in 1 half-moves
17 Rh5 loss in 1 half-moves