Sudoku + Rubik

If Sudoku or Rubik cube isn’t enough of a challenge, try Sudoku AND Rubik Cube! Warning, the reviews are not good at all.

Fastest Rubik Cube Solving The world record for speed cubing – solving the Rubik’s cube in the shortest time...
Warning signs from the future Anders Sandberg conceived of possible warning signs from the future, and explains the rationale for...
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