Speed Bumps

**Sudoku, X-Sums, Quadruples** - Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - X-Sums: Clues outside the grid give the sum of the first X numbers placed in the corresponding row or column, where X is digit in the cell next to the X-sum clue. - Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle. Subscribe to our mailing list to receive a weekly email with all of our puzzles from the past week: https://missingdeck.net/mailing.html