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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rc7 draw
3 Rd7 draw
4 Re7 draw
5 Rf2 draw
6 Rf4 draw
7 Rf5 draw
8 Rf6 draw
9 Ka6 loss in 2 half-moves
10 Ka8 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Kb5 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Kb7 loss in 2 half-moves
16 Kb8 loss in 2 half-moves
17 Kc3 loss in 2 half-moves
18 Kc5 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rf8 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rh7 loss in 2 half-moves