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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Kb8 draw
3 Kc1 draw
4 Kc2 draw
5 Kd2 draw
6 Ke1 draw
7 Ke2 draw
8 Rc3 draw
9 Rd2 draw
10 Rd4 draw
11 Rd5 draw
12 Rd6 draw
13 Rd7 draw
14 Rd8 draw
15 Re3 draw
16 Rf3 draw
17 Rg3 draw
18 Rh3 draw
19 Ka7 loss in 1 half-moves
20 Kb7 loss in 1 half-moves
21 Ra3 loss in 1 half-moves