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 Rb3 draw
3 Rb7 draw
4 Rb8 draw
5 Rc4 draw
6 Rd4 draw
7 Re4 draw
8 Rg4 draw
9 Kaa2 loss in 2 half-moves
10 Kab2 loss in 2 half-moves
11 Kba2 loss in 2 half-moves
12 Kbb2 loss in 2 half-moves
13 Kc1 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves