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

EGTB: win in 4 half-moves

# move score
1 Ra3 win in 3 half-moves
2 Kb3 draw
3 Rb3 draw
4 Rc7 draw
5 Rg3 draw
6 Rh3 draw
7 Ka3 loss in 2 half-moves
8 Rc1 loss in 2 half-moves
9 Rc2 loss in 2 half-moves
10 Rc4 loss in 2 half-moves
11 Rc5 loss in 2 half-moves
12 Rc6 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd3 loss in 2 half-moves
15 Re3 loss in 2 half-moves
16 Rf3 loss in 2 half-moves
17 K1b1 loss in 1 half-moves
18 K1b2 loss in 1 half-moves
19 K2b1 loss in 1 half-moves
20 K2b2 loss in 1 half-moves