Puzzles by type

Author: Pi

Even/Odd Sudoku

8x8

No Touch Sums

8x8

Suguru

7x9

Tetroscope

8x10

Black Ring White Ring

6x6 7x10 11x9

Expressway

7x8 8x13

Maxi Ring Ring

8x8 8x8 8x8 11x11 8x8

Mid Loop

8x7 8x7 10x9

Named Ring Ring

8x7 12x14 12x13

Ring Ring

9x11 11x16 13x14

Ring Ring Matryoshka

7x7 7x7 10x9

Ring Ring Minus One

8x8 9x12 10x9

Touching Ring Ring

7x7 10x10

Kaitoramma

11x13

Squares and Rectangles

8x6
Stars show the aproximate puzzle difficulty:
  • - 30 seconds solving time for an expert
  • - 75 seconds solving time for an expert
  • - 4 minutes solving time for an expert
  • - 10 minutes solving time for an expert
  • - 25 minutes solving time for an expert