Nurikabe: N1

Nurikabe is a classical puzzle and appeared in many World Puzzle Championships . Nurikabe puzzle nowadays is part of almost any puzzle con...

Battleships: B1

This is classical puzzle and appeared in many World Puzzle Championships. "Battleships" Puzzle Instructions: In the diagra...

Sudoku Cup 3

The sudoku club Kabrňáci and SČHAK (the Czech Puzzlers and Crossworders Union) are to announce the unique online "sudokucup"...