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284: 3 bulldozer-heptacubes, 3 eff-heptacubes, 3 wrench-heptacubes
3 solutions for B, 5 solutions for A, many solutions for C and many solutions for D
3×
3×
3×
empty cube at B
(1 of 3)
empty cube at B
(2 of 3)
empty cube at B
(3 of 3)
3× 