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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ra4 draw
3 Rc4 draw
4 Rf6 draw
5 Rf7 draw
6 Rf8 draw
7 Rg4 draw
8 Rh4 draw
9 Kb1 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kc3 loss in 2 half-moves
12 Kcc2 loss in 2 half-moves
13 Kcd1 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kdc2 loss in 2 half-moves
16 Kdd1 loss in 2 half-moves
17 Ke1 loss in 2 half-moves
18 Ke2 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rf2 loss in 2 half-moves
24 Rf3 loss in 2 half-moves
25 Rf5 loss in 2 half-moves