Click on a puzzle to play it online. You can now buy a PDF or a print book containing the first 100 puzzles.

Misc. Variants

Pride.png
Trans Rights.png
Sunbeams.png
Hidden Magic.png
Portal Sudoku.png

 

Sandwich

Fancy Sandwiches.png
Christmas Time Sudoku (2).png
Inverted Sandwiches.png
Double Inverse Sandwiches.png
Toroidal Inverse Sandwiches.png
Hulk Smash Sandwiches (2).png
Toroidal Antiknight Inv. Sand..png
Toroidal XV Inverse Sandwiches.png

 

Molecule

 

Killer Sums

Magic Eights.png
The Whirlpool (4).png
Cage Match.png
Little Killer (1).png
[Sudoku].png
Tetrisudoku.png
Temple of Sudoku.png
Killer Teddy.png
Little Wall of Sudoku.png
Bullseye.png
69.png
Region 51.png

 

XV and Kropki

XVI.png
XVI Killer.png
70 (1).png

 

Odd/Even

The Odds.png
Plaid Sudoku (4).png
Tetris Evens.png
Jigsaw Oddity (1).png
Pentominous Odds 2 (1).png
Pentominous Odds (2).png
Pentominous V.png
Return of the Pentominous Odds.png

 

Thermometer

License to Kill.png
Thermal Shock (1).png
Four Scissors.png
Snail.png
Ladybug.png
Dragonfly.png
Spider and Fly.png
Scorpion.png
Jellyfish (1).png
Squids.png
Mantis (1).png
Butterfly (1).png
Bees!.png
Cricket.png
Little Beetle.png
Heat Death.png
Detonation.png
Inequality.png
Stratus.png

 

Nonconsecutive

11_11.png
Two Much (1).png
Fourever (1).png
Threedom.png
Nonconsecutive XV.png
Nonconsecutive Antiknight Little Killer
Nonconsecutive Arrows (1).png
666.png
Heaven's Sevens.png
Greight Things.png
Nonconsecutive XV Sandwich Sudoku.png
Social Distancing.png
Nonconsecutive.png
Nonconsecutive Arrows (3).png

 

Classic

Solve for X (1).png
Cascade.png
Number Train.png
Butterfly.png
Slices of Pi.png
Black Lives Matter.png
Brain Pain.png
Supernova.png
Porsches.png
Classic.png
Final Lap.png
Tulip.png
Treasure Map.png
Checkered Flag.png
Nuclear Sandwiches (1).png