Another hastily constructed page by Phil Carmody FatPhil.org / Sudoku / index.html
Normal sudoku rules apply. All cages, denoted by a non-white region enclosed by a greenish border, have the same sum, and may not contain repeated digits. All cages have different contents. Orange crosses are white kropke dots, the cells have a difference of one. Black crosses are black kropke dots, one of the cells is double the other. Partial negative contstraint - within cages, all kropke dots are given. Colours mean nothing, they're just to make the cages clearer.
Difficulty: 2/5. Time: 30-40 minutes.
Image created in Sven's amazing SudokuPad.
Solution here, worked solution here
Normal sudoku rules apply. All cages, denoted by a non-white region enclosed by a greenish border, have the same sum, and may not contain repeated digits. All cages have different contents. Orange crosses are white kropke dots: the cells have a difference of one. Black crosses are black kropke dots: one of the cells is double the other. Partial negative contstraint - within cages, all kropke dots are given. Colours mean nothing, they're just to make the cages clearer.
Difficulty: 1/5-2/5. Time: 25-30 minutes.
Image created in Sven's amazing SudokuPad.
Solution here, worked solution here. Aside: "magoo" is nothing to do with Mark, it's a reference to how code golfers sometimes blindly modify their code to make it smaller, a technique I used to help fit in all the cages.
Normal sudoku rules apply. The numbers outside the grid are the sum of the longest possible thermometer that could be drawn in the grid perpendicular to that edge, with its bulb in the edge cell. Digits in thermometers increase in value along their length away from the bulb.
Difficulty: 1/5-2/5. Time: 25-30 minutes.
Image based on a template created in Sven's amazing SudokuPad.
Solution here, with some colour marking the thermos here, and a worked solution here.
While I was getting some practice to help me with the next puzzle, Shy Thermopile, I enjoyed solving a bunch of these - here are a few of my favourites.
Normal sudoku rules apply. The numbers outside the grid are the sum of the longest possible thermometer that could be drawn in the grid perpendicular to that edge, with its bulb in the edge cell. A solo bulb is not a real thermometer, and in precisely those cases no sum is listed. As always, digits in thermometers increase in value along their length away from the bulb. The glyph in the corner of box 5 is a thermometer of 2 cells. The shading in some of the edge cells corresponds to the lack of a real thermometer starting in that cell and lack of number outside the grid, it is purely cosmetic.
Difficulty: 2/5-3/5. Time: 40-50 minutes.
Image based on a template created in Sven's amazing SudokuPad.
Solution here, with some colour marking the thermos here, and a worked solution here.
I enjoyed solving a bunch of these - here are a few of my favourites.
Normal sudoku rules apply. The numbers outside the grid are the sum of the longest possible thermometer that could be drawn in the grid perpendicular to that edge, with its bulb in the edge cell. A solo bulb is not a real thermometer, and in precisely those cases no sum is listed. As always, digits in thermometers increase in value along their length away from the bulb.
Difficulty: 2/5-3/5. Time: 45-60 minutes.
| 14 | - | - | 15 | - | 16 | - | 12 | - | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 17 | - | |||||||||
| - | 11 | |||||||||
| - | - | |||||||||
| 14 | 10 | |||||||||
| 21 | 17 | |||||||||
| 4 | 14 | |||||||||
| - | - | |||||||||
| 11 | - | |||||||||
| - | 11 | |||||||||
| - | 12 | 12 | - | - | - | - | - | 14 |
Solution here, and a worked solution here.
Normal sudoku rules apply. The products of the diagonals in the marked 2x2 squares sum to 38. No two such squares contain the same 4 digits. (E.g. if row 8 began 12..., and row 9 began 34... the 2x2 square would have diagonals 1*4 and 2*3, which sum to 10, which would be in error, as that's not 38!)
Difficulty: 3/5. Time: 60-75 minutes.
Solution here, and a worked solution here, which also briefly explains why I didn't need to tell you that the sum is 38.
Note: I consider this puzzle to be inferior to the Reduxed and Minimal versions below.
Normal sudoku rules apply. Blue crosses are ambiguous double/triple kropke dots, one of the cells is either double or triple the other. Black Xs connect cells that sum to 10. Black lines connect consecutive numbers in the Fibonacci sequence - all possible lines are marked.
Difficulty: 2/5. Time: 35-45 minutes.
Image created in Sven's amazing SudokuPad.
Solution here, and there's a worked solution.
Normal sudoku rules apply. Blue crosses are ambiguous double/triple kropke dots, one of the cells is either double or triple the other. Black Xs connect cells that sum to 10. Black lines connect consecutive numbers in the Fibonacci sequence - all possible lines are marked.
Difficulty: 1-2/5. Time: 25-35 minutes.
Image created in Sven's amazing SudokuPad.
Solution here and there's also a worked solution.
Normal sudoku rules apply. Blue crosses are ambiguous double/triple kropke dots, one of the cells is either double or triple the other. Black Xs connect cells that sum to 10. Black lines connect consecutive numbers in the Fibonacci sequence - all possible lines are marked.
Difficulty: 1/5. Time: 25-35 minutes.
Image created in Sven's amazing SudokuPad.
Solution here, and there's also a worked solution.
Normal sudoku rules apply. Green lines are German Wispers: adjacent cells must differ by at least 5. Cells with an X between them sum to 10.
Difficulty: 2/5. Time: 30-40 minutes.
Image created in Sven's amazing SudokuPad.
Solution here, and there's also a guide to solving, containing the essential insights on how to crack it.
Normal sudoku rules apply. Circles indicate there is a cell of the same value along a diagonal at a distance equal to that value.
Difficulty: 1/5. Time: 10-15 minutes
Image created in Sven's amazing SudokuPad.
Solution here, and without any furniture visible here. Unusually, I provide no guided solution, as no great insights are required. It's just intended to be a fun speedrun.
Another hastily constructed page by Phil Carmody
FatPhil.org / Sudoku / index.html