This is a puzzle that must be solved twice! Normal sudoku rules apply. Normal Killer, Little Killer, Quadruple, Kropki, Thermometer, Palindrome, Maximum, Minimum, and XV rules apply (see below for detailed rules). Red clues are each at least one of normal Skyscrapers, X-Sum, or Sandwich clues. After solving the puzzle, save your solution, because it's time to solve it again as a Wrogn puzzle! All clues in the grid must be made invalid in the finished solution, and red clues cannot be ANY of valid Skyscrapers, X-Sum, or Sandwich clues. To be considered invalid, the maximum cell must be less than AT LEAST one adjacent cell, the minimum cell must be greater than AT LEAST one adjacent cell, thermometers must NOT increase from bulb to tip, and quadruple circles may have some BUT NOT ALL listed digits in the surrounding cells. A "less than" sign effectively becomes a greater-than-or-equal-to sign. A "greater than" sign effectively becomes a less-than-or-equal-to sign. ADDITIONALLY, when solving the Wrogn version, no digit may be the same as it was in the Right version. i.e. if R1C1 was a 1 the first time, it may not be a 1 the second time. IT IS IMPOSSIBLE TO SOLVE THE WROGN VERSION WITHOUT FIRST SOLVING IT NORMALLY