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Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each thermometer-shaped region should be in increasing order, from the bulb to the end.

Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

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Page 1: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each thermometer-shaped region should be in increasing order, from the bulb to the end.

Page 2: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 2. Search Nine Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. Every arrow is pointing at number 9 in the respective row or column. The number in the arrow is the distance (with respect to the number of cells) from the arrow to the 9.

Page 3: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 3. Quad Max Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. An arrow in a circle points to the highest digit in the four neighbouring cell

Page 4: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 4. Odd Max Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. A digit in a circle appears exactly one time in the four surrounding cells and it is the highest odd digit in those four cells.

Page 5: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 5. Toroidal Bricks Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. In the grid stones of size 2x1 are placed. Every stone contains one odd and one even digit. Some stones wrap around the grid from left to right.

Page 6: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 6. Rank Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. A digit ‘X’ in a circle means that the digit in the cell is the X-th smallest number in the corre-sponding cage. Digits cannot repeat within a cage.

Page 7: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 7. Treasure Hunt Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and boldly outlined irregular area. A digit in a circle tells the number of treasures in all the cells directly around it. A treasure is a digit that is higher than the digit in the circle.

Page 8: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 8. Next to Nine Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. Digits outside the grid are the direct neighbours of the nine in the respective row or column.

Page 9: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 9. Diagonal Kropki Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. A black bar between two diagonal neighbouring cells means one of the digits has the double value of the other digit. A white bar between two diagonal neighbouring cells means one of the digits is one higher than the other digit. If there is no bar between two diagonal touching cells, none of these constraints is true.

Page 10: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 10. Sudoku Plus Minus (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. The digit in a circle on a vertical line is the sum of digits above and below it. The digit in a circle on a horizontal line is the difference between the digits on its left and on its right.

Page 11: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 11. Star Battle Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and boldly outlined area. Two of these nine digits are "stars"; so there will be two stars in every row, column and boldly outlined area. Stars don’t touch each other, not even diagonally. You have to find out yourself which digits have to be replaced by stars.

Page 12: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 12. Consecutive Sandwich Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. All the digits that are written outside the grid have two neighbours that are one higher and one lower than the digit itself in the respective row or column. Digits that are not written outside the grid don’t have two of such neighbours.

Page 13: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 13. Pinocchio Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and boldly outlined irregular area. There are three numbers written in a different lay out. Two of these numbers are correct, while the third one is the lying Pinocchio. Find out which number is incorrect and solve the puzzle as a standard irregular sudoku.

Page 14: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 14. Outside Twin Killer Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block of both grids. Replace the question marks in each dotted outlined area with a number that is written on the left of the corresponding row. After that, the small numbers in the dotted outlined areas are the sum of the digits in that area. Within a dotted outlined area all digits must be different. Both grids have the same solution

Page 15: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 15. No Three in a Row Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. In this puzzle there is a restriction on the number of odd/even neighbouring digits. The maximum number of neighbouring odd digits as well as the maximum number of neighbouring even digits in any row or column is two.

Page 16: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 16. Between Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. Digits on each line must be between the digits in the circles at both ends of the line.

Page 17: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 17. 2358 Difference Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. A small digit 2, 3, 5 or 8 between two cells means that the difference between the two digits is 2, 3, 5 or 8. Beware: Not all differences 2, 3, 5 and 8 are given

Page 18: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 18. Greater Than Consecutive Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. In all cases where the difference between two neighbouring digits is 1, there is a greater or less sign between those digits. Digits must be placed in accordance with the signs.

Page 19: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 19. Sequence Roundabout Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. Around every arrow in the grid there is an arithmetic sequence of 3 or 4 numbers. The num-bers that are part of the sequence have the same differences between them. Valid sequences could be 1-2-3 or 2-4-6-8 or 1-5-9 or 3-6-9. 1-2-4-8 is not a valid sequence. Sequences start with the lowest number, going clockwise or anticlockwise as indicated by the arrow. If there is no arrow, there can’t be a sequence.

Page 20: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 20. Maximum Triplet Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. In every row and column there is at least one triplet (three horizontally/ vertically connected cells) of which the sum is given outside the grid. At the same time, these sums are the maximum sum of any triplet in the respective row or column

Page 21: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 21. City Construction Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. Place all buildings in the grid. Buildings may be rotated and mirrored. They may not touch each other, not even diagonally. All unused cells form a single, closed loop. None of the buildings may be placed on a digit that is already given in the grid.

Page 22: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 22. Rhombus Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. There are some rhombus shaped figures in the grid. The sum of numbers on the rhombus vertices should be divisible by the central number. (The number inside the rhombus).

Page 23: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 23. Domino Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. Place all the given dominos exactly once in the dotted white 2x1-shapes in the sudoku grid. In the grey shapes 4 different dominos appear for a second time.

Page 24: Dutch Sudoku Advent - WordPress.com · Dutch Sudoku Advent 1. Thermometers Sudoku (Arvid Baars) Place the digits from 1 to 9 in every row, column and 3x3-block. The digits in each

Dutch Sudoku Advent 24. Clone Sudoku (Richard Stolk) Place the digits from 1 to 9 in every row, column and 3x3-block. The grid contains five different shapes. Each shape is cloned one or more times. Cloned shapes may be rotated, but the position of the digits within them remains fixed. Within a single shape, no two digits are the same.