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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb5 draw
5 Re2 draw
6 Rf2 draw
7 Rg2 draw
8 Rh2 draw
9 K7a7 loss in 2 half-moves
10 K7a8 loss in 2 half-moves
11 K7c7 loss in 2 half-moves
12 K7c8 loss in 2 half-moves
13 K8a7 loss in 2 half-moves
14 K8a8 loss in 2 half-moves
15 K8c7 loss in 2 half-moves
16 K8c8 loss in 2 half-moves
17 Ka6 loss in 2 half-moves
18 Kb6 loss in 2 half-moves
19 Kc6 loss in 2 half-moves
20 Ra2 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rc2 loss in 2 half-moves
23 Rd2 loss in 2 half-moves