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EGTB: win in 4 half-moves

# move score
1 R1a3 win in 3 half-moves
2 g1=N draw
3 R1a2 draw
4 R1a7 draw
5 R8a2 draw
6 R8a3 draw
7 Rg1 draw
8 g1=B loss in 2 half-moves
9 g1=K loss in 2 half-moves
10 g1=Q loss in 2 half-moves
11 g1=R loss in 2 half-moves
12 R1a4 loss in 2 half-moves
13 R1a5 loss in 2 half-moves
14 R1a6 loss in 2 half-moves
15 R8a4 loss in 2 half-moves
16 R8a5 loss in 2 half-moves
17 R8a6 loss in 2 half-moves
18 R8a7 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc1 loss in 2 half-moves
22 Rc8 loss in 2 half-moves
23 Rd1 loss in 2 half-moves
24 Rd8 loss in 2 half-moves
25 Re1 loss in 2 half-moves
26 Re8 loss in 2 half-moves
27 Rf1 loss in 2 half-moves
28 Rf8 loss in 2 half-moves
29 Rg8 loss in 2 half-moves
30 Rh1 loss in 2 half-moves
31 Rh8 loss in 2 half-moves