Puzzles by type

Author: Pi

Even/Odd Sudoku

8x8

No Touch Sums

8x8

Suguru

7x9

Tetroscope

8x10

Black Ring White Ring

6x6 7x10

Expressway

7x8

Maxi Ring Ring

8x8 8x8

Mid Loop

8x7 10x9

Ring Ring

9x11

Touching Ring Ring

7x7

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