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EGTB: win in 4 half-moves

# move score
1 Rf4 win in 3 half-moves
2 Re4 win in 7 half-moves
3 Kb5 draw
4 Ra1 draw
5 Ra2 draw
6 Ra5 draw
7 Rd4 draw
8 Rg4 draw
9 Rh4 draw
10 Ka7 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Kd8 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Kf8 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Ka5 loss in 1 half-moves