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EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Kc3 draw
3 Kd3 draw
4 Ke3 draw
5 Ra8 draw
6 Rb2 draw
7 Rb3 draw
8 Rb4 draw
9 Rb5 draw
10 Rd8 draw
11 Re8 draw
12 Rf8 draw
13 Kc1 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Kd1 loss in 2 half-moves
16 Ke1 loss in 2 half-moves
17 Ke2 loss in 2 half-moves
18 Kg1 loss in 2 half-moves
19 Kg2 loss in 2 half-moves
20 Kh2 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rc8 loss in 2 half-moves
24 Rg8 loss in 2 half-moves
25 Rh8 loss in 2 half-moves