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 Rb3 win in 3 half-moves
3 Rb2 draw
4 Rb4 draw
5 Rb5 draw
6 Rb6 draw
7 Rd7 draw
8 Re7 draw
9 Rf7 draw
10 Rh7 draw
11 K1b1 loss in 2 half-moves
12 K1b2 loss in 2 half-moves
13 K2b1 loss in 2 half-moves
14 K2b2 loss in 2 half-moves
15 Ka3 loss in 2 half-moves
16 Kb3 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves