Summary of The Most Positive of Puzzles

00:00:00 - 00:35:00

This YouTube video showcases a puzzle in which the last digit is an anagram of the puzzle's pseudonym. The video finishes with a reveal of the pseudonym and its anagram.

• 00:00:00 The video introduces the rule that the sums of the three cell arms of a plus shape are either all odd or all even. It then demonstrates this rule by solving a puzzle.
• 00:05:00 The video discusses a puzzle in which the central digit determines the shape of the digits around it. The digits one to nine can be found in every row column box and every extra region, but only if the central digit is even. If the central digit is odd, the digits one to nine cannot all add up to an even number. However, the digits one to nine can be found in every row and column once they are eliminated from the central digit.
• 00:10:00 The video explains how using parity coloring, blue and yellow can be combined to create even and odd cells, respectively. It also demonstrates how adding a single odd cell to a set of cells creates an even and odd pair, respectively. The video concludes by explaining how adding a single even cell to a set of cells creates a set of three five seven nine, which is equivalent to a set of three five seven nine.
• 00:15:00 In this video, the presenter discusses how dominoes work, and how they can be used to prove that something is even or odd. They show how this works for row three and column three, and then discuss how it can be used to prove that a number is even or odd. They then show how this can be used to prove that a number is a multiple of nine.
• 00:20:00 In this puzzle, the black dots don't seem to be helpful in figuring out the numbers. One of the black dots can be a number 9, which affects the cell in question. The other black dot can be a number 8, which also affects the cell in question. However, all that the black dots tell us is that there is either a one or three in the cell, and it's not clear which one it is. If it was an 8, then there would be a two six pair up in the cell. However, if it was a one, then there would be a four eight pair up in the cell. Either way, it's close to mattering already.
• 00:25:00 The video discusses a puzzle where the most positive outcome is that none of the digits are 9s. The video demonstrates how to solve the puzzle using the king's move.
• 00:30:00 This YouTube video showcases a puzzle in which the last digit is an anagram of the puzzle's pseudonym. The video finishes with a reveal of the pseudonym and its anagram.
• 00:35:00 The video is a puzzle demonstration in which the presenter demonstrates how to solve the puzzle using a different strategy than originally intended. The puzzle features a circular grid with numbers in the corners. The presenter notes that the numbers in the grid are important, and advises viewers to use a 9x wing to get the numbers in the grid. After doing so, the puzzle starts to flow and the presenter enjoys solving it.