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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rc2 draw
3 Rd2 draw
4 Rg5 draw
5 Rg6 draw
6 Rg7 draw
7 Rg8 draw
8 Rh2 draw
9 K2a3 loss in 2 half-moves
10 K2b3 loss in 2 half-moves
11 K4a3 loss in 2 half-moves
12 K4b3 loss in 2 half-moves
13 Ka1 loss in 2 half-moves
14 Ka5 loss in 2 half-moves
15 Kb1 loss in 2 half-moves
16 Kb2 loss in 2 half-moves
17 Kb4 loss in 2 half-moves
18 Kb5 loss in 2 half-moves
19 Re2 loss in 2 half-moves
20 Rf2 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rg3 loss in 2 half-moves
23 Rg4 loss in 2 half-moves