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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ka4 draw
3 Ka6 draw
4 Ka7 draw
5 Ka8 draw
6 Kb7 draw
7 Kc7 draw
8 Kc8 draw
9 Ra2 draw
10 Rb1 draw
11 Rb7 draw
12 Rh2 draw
13 Kb4 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rd2 loss in 2 half-moves
21 Re2 loss in 2 half-moves
22 Rf2 loss in 2 half-moves
23 Rg2 loss in 2 half-moves