Puzzles

01.11 - 17.11.

The November optimization - Mind the crossings

04.10 - 20.10.

The October optimization - Pentomino pairs

30.06. - 15.07.

03.08. - 19.08.

31.08. - 16.09.

21.09. - 24.09.

The July optimization - Russia 2018.

The August optimization - Robin Hood

The September optimization

Sudoku variants

09.11. - 25.11.

The November optimization - Sowing

Sudoku Variants - 2 in 1

02.02. - 18.02.

02.03. - 18.03.

23.03. - 26.03.

The March optimization - Double Pento

Innovations & variations

30.03. - 15.04.

The April optimization - Long drive

04.05. - 20.05.

May optimization - Journey to the center of the Earth

01.06. - 17.06.

22.06. - 25.06.

The June optimization - A la Sudoku

All for One - One for All (Sudoku variants)

28.09. - 14.10.

19.10. - 22.10.

The October optimization - Arrows

Diagonal Sudoku

30.11. - 16.12.

The December optimization - Metro

21.12. - 24.12.

Links Puzzles sites

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World Puzzle Federation

Logic Masters Deutschland

Logic Masters India

UK Puzzle Association

Serbian Puzzle Association

Diogen - Russian Puzzle Club

Forsmarts

Argio Logic

Fun With Puzzles