EVERYTHING ABOUT UNIVERSAL CROSSWORD PUZZLE - UNIVERSAL CROSSWORD

Ready to tackle a monster? This colossal Sudoku problem is not for your feint of coronary heart! Clear up the puzzle so that every 4x4 box around the gigantic 16x16 grid consists of the quantities 0-9 and letters A-F.Exhibit your woodcutting competencies by reducing just as much Wooden as it is possible to. You need to be brief and prevent approach