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 Rc1 draw
3 Rd3 draw
4 Rd4 draw
5 Rd5 draw
6 Rd8 draw
7 Rg1 draw
8 Rh1 draw
9 K1a2 loss in 2 half-moves
10 K1b2 loss in 2 half-moves
11 K3a2 loss in 2 half-moves
12 K3b2 loss in 2 half-moves
13 Ka4 loss in 2 half-moves
14 Kb1 loss in 2 half-moves
15 Kb3 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Rd2 loss in 2 half-moves
18 Rd6 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Rf1 loss in 2 half-moves