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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Ra7 draw
3 Rc7 draw
4 Rd7 draw
5 Re2 draw
6 Re3 draw
7 Re4 draw
8 Re5 draw
9 Rh7 draw
10 K6a7 loss in 2 half-moves
11 K6b7 loss in 2 half-moves
12 K8a7 loss in 2 half-moves
13 K8b7 loss in 2 half-moves
14 Ka5 loss in 2 half-moves
15 Kb5 loss in 2 half-moves
16 Kb6 loss in 2 half-moves
17 Kb8 loss in 2 half-moves
18 Re1 loss in 2 half-moves
19 Re6 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves