SudoKanard

 Killer/X-Sums Sudoku Apply classic Sudoku rules. The digits placed in each marked cage must sum to the total given in its top-left corner. Digits must not repeat in cages. Each clue outside the grid indicates the sum of the first digits placed in the corresponding direction, where X is equal to the first digit placed in that direction. Solve this puzzle on Penpa: https://tinyurl.com/2rybmlhj

 X-Sums Sudoku Standard Sudoku rules apply. Each clue in the margin is the sum of the first X digits in the corresponding direction, where X is the digit next to the clue.   Penpa link to solve online: https://tinyurl.com/2fzntxej

X-Sums Sudoku Standard Sudoku rules apply. Each clue outside the grid indicates the sum of the first X numbers placed in the corresponding direction, where X is equal to the first number placed in that direction. Penpa link: https://tinyurl.com/2yg7v7au SudokuPad link: https://shorturl.at/swH19

French Revolution: from 1789 to 2021     Standard Sudoku rules apply. Thermo : digits strictly increase along thermometers starting from the bulb. Arrow : the digit in the circle is the sum of all digits along the arrow. X-Sums : each number on the left side of the grid is the sum of the X first digits where X is the first digit seen in that direction. Sandwich : each number above the grid is the sum of the digits that are sandwiched between 1 and 9 in the corresponding column.   Penpa link to solve online: https://git.io/JCqbr