Heyawake: H3

This is one of my favorite puzzles. This is as addictive as Sudoku . Rules of Heyawake 1. The rectangle, divided by bold lines, ...

Rules of Round Sudoku

Round Sudoku is also known as Circular Sudoku or Target Sudoku. It is different from Classic Sudoku as one has to think circularly while s...

Sudoku 2D: CS9

This is very basic Sudoku type. I have written the computer program to generate these type of puzzles. This the computer generated Sud...

Sudoku 2D: CS8

This is very basic Sudoku type. I have written the computer program to generate these type of puzzles. This the computer generated Sud...

Snail Sudoku-1

Snail Sudoku is one of my favorite Sudoku type. This puzzle type appeared in Oğuz Atay Puzzle Contests (OAPC) and The Last Sudoku Compe...

Sudoku 2D: CS7

This is very basic Sudoku type. I have written the computer program to generate these type of puzzles. This the computer generated Sud...

Sudoku 2D: CS6

This is very basic Sudoku type. I have written the computer program to generate these type of puzzles. This the computer generated Sud...

Sudoku Cup 4

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

Arrow Loop: A1

This is the first new puzzle variation which I created. Earlier I have posted this puzzle at my puzzle blog but now will be posting this t...

Diagonal Loop: D1

Instructions: Draw a single closed loop by connecting neighboring corners diagonally (but not horizontally or vertically). A numbered cir...

Crossing Masyu: C1

Rules of Crossing Masyu Puzzle Moving from square to square, draw a closed path that passes through every circle and cross itself onl...

Two Snakes: T1

Two Snakes Instructions Draw two snakes in the grid, whose head and tail (if given) are greyed cells. A snake doesn't touch itself...

Masyu Snake: M1

Instructions: Draw a snake in the grid, whose head and tail (if given) are greyed squares. Snake doesn't touch itself, not even diag...

Snakes: S1

This puzzle type I created for "Contest for best logic innovation" Snakes Instructions Fill the grid with snakes so that ...

Network: N1

Instructions of Network Puzzle Connect Blackened and White Circles at center represented by N. Connection at N should have at least ...