## 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 "Four Squares"

Four Squares puzzle appeared in World Puzzle Championship 2009 . I have prepared couple of puzzles of this type which I will be posting so...

## Sudoku Mock Tests

For the preparations for the World Sudoku Championships (WSC), Mock Sudoku Test is held by Logic Masters India every week before the WSC....

## Prime Number Sudoku (Fun With Sudoku #28) Solution

Here is the answer to my previous Sudoku League Puzzle titled " Prime Number Sudoku (Fun With Sudoku #28) ". Can you solve this Pr...

## Classic Sudoku (Fun With Sudoku #25) Solution

Here is the answer to the Sudoku League Puzzle titled " Classic Sudoku (Fun With Sudoku #25) ". Can you solve this Classic Sud...

## Tripod Sudoku: T1

This Tripod Sudoku puzzle I created for 10th 24 hour Championship.  Tripod Sudoku also appeared in the following championships  Oguz At...

## Classic Sudoku (Fun With Sudoku #254) Puzzle Solution

Here is the solution for the Classic Sudoku Puzzle. This Sudoku is published with the title Classic Sudoku Puzzle (Fun With Sudoku #254) ....

## Even Odd Sudoku (Mini Sudoku Series #96) Solution

This is the solution to the Even-Odd Sudoku published with the title  Even Odd Sudoku (Mini Sudoku Series #96) . Can you solve this Even O...

## Tripod Sudoku : T2

Tripod Sudoku Instructions Fill the grid with digits 1-6 and divide the grid into some regions, so that each digit appears exactly on...

## Mini Kropki Sudoku: K2

This Puzzle type appeared in the following championships "18th World Puzzle Championship, Antalya (Turkey)" World Sudok...

## Diagonal Sudoku (Daily Sudoku League #176) Answer

Here is the solution to Diagonal Sudoku which is titled  Diagonal Sudoku (Daily Sudoku League #176) Try solving the Diagonal Sudoku and wr...

## 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...

## LMI Monthly Test - May 2010 - Mastermind Twins

After a successful weekly Sudoku Mock Tests, Logic Masters India (LMI) is now starting LMI Monthly Test. May 2010 test is named as "...

## 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 OÄŸuz 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 KabrÅˆÃ¡ci and SÄŒHAK (the Czech Puzzlers and Crossworders Union) are to announce the unique online "sudokucup" tou...

## Number Place - Skyscraper With Empty Space

"Number Place - Skyscraper With Empty Space" Instructions The grid represents a plot with buildings of different heights. Fi...

## Sparse Skyscrapers: SS1

"Sparse Skyscrapers" Instructions: Fill the grid in such a way that every row and every column contains numbers from the g...

## Tight Fit Sudoku (Daily Sudoku League #174) Answer

Here is the answer to Tight Fit Sudoku which is titled  Tight Fit Sudoku (Daily Sudoku League #174) Can you solve this Tight Fit Sudoku? ...

## 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...

## The First Online Sudoku Competition After WSC

Here is the mail from Fred regarding this championship. Hi, If you participate in World Sudoku Championship (WSC) and you...

## 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...

## Dotty Snake (WPC Style Puzzles #D1)

This is the new Puzzle Variations named Dotty Snake. This puzzle is an example to explain the rules of this puzzle type. Dotty Snake Instru...

## Paint the Snake: P1

This is the variation of very famous puzzle known with many names "Paint by Numbers", Nanograms or Griddlers. " Paint ...

## Loop Painting: L1

This is the variation of very famous puzzle known with many names "Paint by Numbers", Nanograms or Griddlers. "Loop Pa...

## Palindrome ABCD End View: P1

This puzzle type I created for "Contest for best logic innovation" Palindrome ABCD End View Instructions Fill the grid wit...

## Palindrome Skyscrapers: P1

This puzzle type I created for "Contest for best logic innovation" Instructions: Fill the grid with numbers from 1 to 3 (repr...

## Snakes: S1

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

## Logic Challenge: Master the Double Skyscrapers Puzzle

Double Skyscrapers Puzzle Instructions Fill the grid with digits 1 to 3, so that each digit appears exactly twice in every row/column. The ...

## Wolves in Polygraph: W1

This puzzle type I created for "Contest for best logic innovation" Instructions: Draw a single continuous loop by connect...

## Snail Skyscrapers: S1

This puzzle type I created for "Contest for best logic innovation" Snail Skyscrapers Instructions Fill the grid with dig...

## Network: N1

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

## MineSweepers in Loop: M1

This puzzle type I created for "Contest for best logic innovation" Instructions: Place some mines in each diagram so that...

## Antaksari Snake (WPC Style Puzzles #S1)

This 'Antaksari Snake' Puzzle type I created for the "Contest for best logic innovation". Antaksari is a very popul...

## Heavy Top Skyscrapers: H1

This puzzle type I created for "Contest for best logic innovation" Instructions: Fill the grid with digits 1 to 5, so tha...

## Outside Sum Tapa: O1

Tapa is quite nice puzzle and getting famous like Sudoku. There is now weekly Tapa Variation Contest. I have created some of the Tapa puzz...