Puzzle No.174

This is a Multi Sudoku from the Bulgarian Sudoku Championship - 2007.

PUZZLE NO.174: MULTI SUDOKU


SOLUTION:

Puzzle No.173

This is a Kropki Sudoku from Sudokucup 1 made by Karel Tesar.

PUZZLE NO.173: KROPKI SUDOKU


SOLUTION:

Puzzle No.172

This is an Inequality Sudoku from Sudokucup 1 made by Karel Tesar.

PUZZLE NO.172: INEQUALITY SUDOKU


SOLUTION:

Puzzle No.171

This is a Killer Sudoku from the Bulgarian Sudoku Championship - 2007.

PUZZLE NO.171: KILLER SUDOKU


SOLUTION:

Puzzle No.170

This is a Killer Sudoku from Sudokucup 1 made by Karel Tesar.

PUZZLE NO.170: KILLER SUDOKU


SOLUTION:

Puzzle No.169

This is a Magic Square Sudoku made by Gaurav Korde.

PUZZLE NO.169: MAGIC SQUARE SUDOKU


SOLUTION:

Puzzle No.168

This is a Triple Sum Sudoku.

PUZZLE NO.168: TRIPLE SUM SUDOKU


SOLUTION:

Puzzle No.167

This is a Doors puzzle from the French Puzzle Championship - 2005.

PUZZLE NO.167: DOORS


SOLUTION:

Puzzle No.166

This is a Quadruple Sudoku made by Ritesh Gupta and Hitesh Gupta.

PUZZLE NO.166: QUADRUPLE SUDOKU


SOLUTION:

Puzzle No.165

This is a No Knight Step Sudoku made by Gaurav Korde.

PUZZLE NO.165: NO KNIGHT STEP SUDOKU














SOLUTION:

Puzzle No.164

This is a Killer Sudoku from the Bulgarian Sudoku Championship - 2007.

PUZZLE NO.164: KILLER SUDOKU


SOLUTION:

Puzzle No.163

This is a Star Battle puzzle from the Belarusian Puzzle Championship - 2008.

PUZZLE NO.163: STAR BATTLE (2 Stars)


SOLUTION:

Puzzle No.162

This is a Doors puzzle from the French Puzzle Championship - 2004.

PUZZLE NO.162: DOORS


SOLUTION:

Puzzle No.161

This is a Meander puzzle from the French Puzzle Championship - 2005.

PUZZLE NO.161: MEANDER


SOLUTION:

Puzzle No.160

This is a Star Battle puzzle.

PUZZLE NO.160: STAR BATTLE (2 Stars)


SOLUTION:

Puzzle No.159

This is a Quadruple Sudoku from Sudokucup 1 made by Karel Tesar.

PUZZLE NO.159: QUADRUPLE SUDOKU


SOLUTION:

Oguz Atay Puzzle Contest 7

The 7th Oguz Atay Puzzle Contest was held on 25th July, 2009 from 14:30 - 17:00 GMT (20:00 - 22:30 IST).

Download Instruction Booklet
Download Puzzle Booklet

Results

1. Thomas Snyder (USA) - 164.9
2. Ulrich Voigt (Germany) - 150.32
3. Hideaki Jo (Japan) - 133.6
4. Dan Katz (USA) - 129.64
5. Peter Hudak (Slovakia) - 127.3
6. Nikola Zivanovic (Serbia) - 124.5
7. Przemyslaw Debiak (Poland) - 123.88
8. Byron Calver (Canada) - 116.38
9. Jan Mrozowski (Poland) - 116.1
10. Shinichi Aoki (Japan) - 112.82

Indian participants

21. Rohan Rao (India) - 83.96
44. Rajesh Kumar (India) - 49.8
52. Rakesh Rai (India) - 40.18
58. Puneet Goenka (India) - 33.9

Complete Results

There were totally 70 participants.
Congrats to everyone!

Puzzle No.158

This is a Killer Sudoku.

PUZZLE NO.98: KILLER SUDOKU


SOLUTION:

Rules of 'Killer Sudoku'

Place numbers in the grid such that each row, column and 3x3 box contain the numbers 1 to 9. The sum of the digits within each dotted subarea equals the number given in the top left corner of that subarea. No digit can occur more than once in each subarea.

EXAMPLE:


UNIQUE SOLUTION:

Rules of 'Skyscrapers'

Place numbers of the given range in the grid such that each row and column contains each number exactly once. Each number represents the height of the skyscraper in each cell. The digits outside the grid indicate the number of skyscrapers seen from the corresponding direction.

EXAMPLE: (1~4)


UNIQUE SOLUTION:

Rules of 'Meander'

Find a route, starting in the upper left corner and ending in the lower right corner. The route meanders horizontally and vertically, passing through centres of cells. The digits outside the grid indicate the total number of occupied cells in the corresponding row or column.

EXAMPLE:


UNIQUE SOLUTION:

Puzzle No.157

This is a No Touch Sudoku from the Polish Sudoku Championship - 2007.

PUZZLE NO.157: NO TOUCH SUDOKU


SOLUTION:

Rules of 'Doors'

Each cell in the grid represents a room. All rooms are interconnected by doors. Some doors are open, while the others are closed. The number inside a room indicates the number of rooms that can be seen from it in all four directions. Draw the closed doors.

EXAMPLE:


UNIQUE SOLUTION:

Rules of 'No Touch Sudoku'

Place numbers in the grid such that each row, column and 3x3 box contain the numbers 1 to 9. Same numbers cannot touch each other even diagonally.

EXAMPLE:


UNIQUE SOLUTION:

Puzzle No.156

This is a Minesweeper puzzle made by Deb Mohanty.

PUZZLE NO.156: MINESWEEPER (24 Mines)

SOLUTION:

Puzzle No.155

This is an Untouchable Sudoku from Sudokucup 1 made by Karel Tesar.

PUZZLE NO.155: UNTOUCHABLE SUDOKU

SOLUTION: