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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ra6 draw
3 Rc6 draw
4 Rf3 draw
5 Rf7 draw
6 Rf8 draw
7 Rg6 draw
8 Rh6 draw
9 K5a6 loss in 2 half-moves
10 K5b6 loss in 2 half-moves
11 K7a6 loss in 2 half-moves
12 K7b6 loss in 2 half-moves
13 Ka4 loss in 2 half-moves
14 Ka8 loss in 2 half-moves
15 Kb4 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Kb7 loss in 2 half-moves
18 Kb8 loss in 2 half-moves
19 Rd6 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rf2 loss in 2 half-moves
23 Rf4 loss in 2 half-moves
24 Rf5 loss in 2 half-moves