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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Kb1 draw
4 Kb2 draw
5 Kb3 draw
6 Kc1 draw
7 Kc3 draw
8 Kcd1 draw
9 Ked1 draw
10 Kf1 draw
11 Ra7 draw
12 Rd7 draw
13 Rh1 draw
14 Rh2 draw
15 Rh6 draw
16 Rh8 draw
17 Kcd2 loss in 2 half-moves
18 Kd3 loss in 2 half-moves
19 Ke2 loss in 2 half-moves
20 Ked2 loss in 2 half-moves
21 Kf2 loss in 2 half-moves
22 Re7 loss in 2 half-moves
23 Rf7 loss in 2 half-moves
24 Rg7 loss in 2 half-moves
25 Rh3 loss in 2 half-moves
26 Rh4 loss in 2 half-moves
27 Rh5 loss in 2 half-moves