The puzzles on this page were set collaboratively with students in a course on Puzzles and Paradoxes, taught by FullDeck and Missing a Few Cards, or set individually or in teams by students in the course. All puzzles published here are done so with permission of the constructors, who retain copyright to their own puzzles.

Estimated difficulty: 1.5/5

*Rules*

Standard sudoku rules apply: every row, column, and 3x3 box indicated by darker shaded lines must contain a complete set of the digits 1-9.

Digits inside cages indicated by dashed lines cannot repeat within the cage and must sum to the value given in the upper left corner of the cage.

Each digit shown inside a large circle must appear in at least one of the four cells surrounding the circle.

Estimated difficulty: 1.5/5

*Rules*

Standard sudoku rules apply: every row, column, and 3x3 box indicated by darker shaded lines must contain a complete set of the digits 1-9.

Digits separated by a V must sum to 5. Digits separated by an X must sum to 10. Not all Xs and Vs are necessarily shown.

Digits inside cages indicated by dashed lines cannot repeat within the cage and must sum to the value given in the upper left corner of the cage.

Estimated difficulty: 1.5/5

*Rules*

Standard sudoku rules apply: every row, column, and 3x3 box indicated by darker shaded lines must contain a complete set of the digits 1-9.

Digits on thermometers must increase from bulb to tip.

Digits inside cages indicated by dashed lines cannot repeat within the cage and must sum to the value given in the upper left corner of the cage.

This puzzle was featured on BremSter Puzzles on 26-November-2022.

Estimated difficulty: 1.5/5

*Rules*

Digits on thermometers must increase from bulb to tip.

Digits separated by a V must sum to 5. Digits separated by an X must sum to 10. Not all Xs and Vs are necessarily shown.

This puzzle was set independently by Quartzic in response to a disappointing American Handegg result, rather than as a class assignment.

Estimated difficulty: 1.5/5

*Rules*

Standard 6x6 sudoku rules apply: every row, column, and 2x3 box indicated by darker shaded lines must contain a complete set of the digits 1-6.

Killer cages: digits inside cages indicated by dashed lines must sum to the value shown in the upper left corner of the cage.

Clones: each clone region, marked in orange and green, contains the same digits in the same relative locations as the other clone region of the same color.

The second puzzles set in class were 6x6s using either thermo or arrow constraints. This puzzle appeared in the university newspaper puzzle section on 1 December 2022.

Estimated difficulty: 1/5

*Rules*

Standard 6x6 sudoku rules apply: every row, column, and 2x3 box indicated by darker shaded lines must contain a complete set of the digits 1-6.

Digits on thermos must increase from bulb to tip.

The second puzzles set in class were 6x6s using either thermo or arrow constraints. This puzzle appeared in the university newspaper puzzle section on 1 December 2022.

Estimated difficulty: 1/5

*Rules*

Standard 6x6 sudoku rules apply: every row, column, and 2x3 box indicated by darker shaded lines must contain a complete set of the digits 1-6.

Digits on arrows must sum to the value shown in the attached circle. Digits may repeat along arrows if allowed by other rules.

The second puzzles set in class were 6x6s using either thermo or arrow constraints. This puzzle appeared in the university newspaper puzzle section on 1 December 2022.

Estimated difficulty: 1/5

*Rules*

Digits on arrows must sum to the value shown in the attached circle. Digits may repeat along arrows if allowed by other rules.

Estimated difficulty: 1/5

*Rules*

Digits on thermos must increase from bulb to tip.

The first puzzles set in class were 4x4s using killer cage constraints. This puzzle appeared in the university newspaper puzzle section on 17 November 2022.

Estimated difficulty: 1/5

*Rules*

Standard 4x4 sudoku rules apply: every row, column, and 2x2 box indicated by darker shaded lines must contain a complete set of the digits 1-4.

Killer cages: digits inside cages marked by dashed lines cannot repeat and must sum to the number shown in the top left corner of the cage.

The first puzzles set in class were 4x4s using killer cage constraints. This puzzle appeared in the university newspaper puzzle section on 17 November 2022.

Estimated difficulty: 1/5

*Rules*

Standard 4x4 sudoku rules apply: every row, column, and 2x2 box indicated by darker shaded lines must contain a complete set of the digits 1-4.

Killer cages: digits inside cages marked by dashed lines cannot repeat and must sum to the number shown in the top left corner of the cage.

The first puzzles set in class were 4x4s using killer cage constraints. This puzzle appeared in the university newspaper puzzle section on 17 November 2022.

Estimated difficulty: 1/5

*Rules*

Standard 4x4 sudoku rules apply: every row, column, and 2x2 box indicated by darker shaded lines must contain a complete set of the digits 1-4.

Killer cages: digits inside cages marked by dashed lines cannot repeat and must sum to the number shown in the top left corner of the cage.

Estimated difficulty: 1/5

*Rules*

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