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

EGTB: win in 4 half-moves

# move score
1 Rc1 win in 3 half-moves
2 Rc3 win in 3 half-moves
3 Rc4 win in 3 half-moves
4 K1a2 draw
5 K1b2 draw
6 K3a2 draw
7 K3b2 draw
8 Ka4 draw
9 Kb1 draw
10 Kb3 draw
11 Kb4 draw
12 Ra5 draw
13 Rb5 draw
14 Rc2 draw
15 Rd5 draw
16 Rh5 draw
17 Rc6 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Re5 loss in 2 half-moves
21 Rf5 loss in 2 half-moves
22 Rg5 loss in 2 half-moves