Oguz Atay Puzzle Contest 6

The 6th Oguz Atay Puzzle Contest was held on 27th June, 2009 from 14:30 - 17:00 GMT (20:00 - 22:30 IST).

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Results

1. Mehmet Murat Sevim (Turkey) - 166.85
2. Thomas Snyder (USA) - 157.7
3. Shinichi Aoki (Japan) - 138.46
4. Taro Arimatsu (Japan) - 133.5
5. Nikola Zivanovic (Serbia) 122.26
6. Hideaki Jo (Japan) - 116.46
7. Saikachi Takeya (Japan) - 108.42
8. Przemyslaw Debiak (Poland) - 106.71
9. Sebastian Matschke (Germany) - 106.71
10. Vlad Klyachin (Russia) - 94.5

Indian participants

12. Rohan Rao (India) - 78.8
26. Anurag Sahay (India) - 63.1
33. Rajesh Kumar (India) - 55.68
53. Puneet Goenka (India) - 28.38
61. Roshith Mohan (India) - 12.9

Complete Results

There were totally 66 participants.
Congrats to everyone!

US Puzzle Championship 2009

The US Puzzle Championship 2009 was held on 20th June, 2009 at 13:00 ET, 17:00 GMT (22:30 IST).

Results

1. Thomas Snyder (USA) - 360
2. Mehmet Murat Sevim (Turkey) - 310
3. Roger Barkan (USA) - 265
4. Hideaki Jo (Japan) - 262
5. Zack Butler (USA) - 260
6. Byron Calver (Canada) - 256
7. Wei-Hwa Huang (USA) - 249
8. Dan Katz (USA) - 242
9. Sebastiano Schillaci (Italy) - 230
10. Derek Kisman (Canada) - 220

Indian participants

56. Rajesh Kumar (India) - 143
71. Amit Sowani (India) - 130
112. Rakesh Rai (India) - 114
219. Rohan Rao (India) - 84
226. Anoop Varghese (India) - 80
429. Vivek Jain (India) - 45
512. Lakshminarayan Bobba (India) - 30
534. Sundaresan Sethuraman (India) - 25

There were totally 540 participants.
Congrats to everyone!

Sudokucup 2

The 2nd sudokucup tournament was held on 20th-21st June, 2009. It was prepared by Jan Novotny.

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Password is HN7ER&QAC21U?QW0

The list of sudokus that appeared in the championship are:

1. Anti-Knight Sudoku
2. Biathlon Sudoku
3. Classic Sudoku
4. Clock Faces Sudoku
5. Consecutive Sudoku
6. Diagonal Sudoku
7. Figure Sudoku
8. Irregular Dots Sudoku
9. Multiplication Table Sudoku
10. Neighbours Sudoku
11. Quadruple Sudoku
12. Sequence Sudoku
13. Triathlon Sudoku
14. Wrong Killer Sudoku
15. Surprise Sudoku

Results

1. Jan Mrozowski (Poland) - 300 (1:15)
2. Jakub Ondrousek (Czech Republic) - 300 (1:34)
3. Jason V. Zuffranieri (USA) - 300 (1:39)
4. Byron Calver (Canada) - 300 (1:43)
5. Nikola Zivanovic (Serbia) - 300 (1:45)
6. Michael Smit (Germany) - 300 (1:45)
7. Min-hyeong Jeong (South Korea) - 300 (1:47)
8. Yuhei Kusui (Japan) - 300 (1:48)
9. Bertrand Vincent (Belgium) - 300 (1:48)
10. Hideaki Jo (Japan) - 300 (1:48)
11. Lukasz Bozykowski (Poland) - 300 (1:52)
12. David McNeill (UK) - 300 (1:54)
13. Przemysław Debiak (Poland) - 300 (1:54)
14. Jana Tylova (Czech Republic) - 300 (1:59)
15. Minfang Lin (China) - 300 (2:00)

Indian participants

34. Gaurav Korde (India) - 244
42. Ritesh Gupta (India) - 225
46. Rohan Rao (India) - 224
53. Rishi Puri (India) - 204
58. Puneet Goenka (India) - 201
59. Rakesh Rai (India) - 201
84. Tejal Phatak (India) - 170
86. Himani Shah (India) - 167
102. Rajesh Kumar (India) - 152
123. Munira Lokhandwala (India) - 137

There were totally 281 participants.
Congrats to everyone!

Puzzle No.149

This is an Extra Region Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.149: EXTRA REGION SUDOKU

SOLUTION:

Puzzle No.148

This is a Diagonal Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.148: DIAGONAL SUDOKU

SOLUTION:

Puzzle No.147

This is an External Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.147: EXTERNAL SUDOKU

SOLUTION:

Puzzle No.146

This is an Extra Region Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.146: EXTRA REGION SUDOKU

SOLUTION:

Puzzle No.145

This is a Windoku from the World Sudoku Championship - 2009.

PUZZLE NO.145: WINDOKU


SOLUTION:

Puzzle No.144

This is a Classic Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.144: CLASSIC SUDOKU

SOLUTION:

Puzzle No.143

This is an External Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.143: EXTERNAL SUDOKU

SOLUTION:

Puzzle No.142

This is a Roman Sudoku from the World Sudoku Championship - 2009.

PUZZLE NO.142: ROMAN SUDOKU

SOLUTION:

Puzzle No.141

This is a Pandigital Sudoku from the Japanese Sudoku Championship - 2007.

PUZZLE NO.141: PANDIGITAL SUDOKU

SOLUTION:

Rules of 'Pandigital Sudoku'

Place numbers in the grid such that every row, column and 3x3 box contain the numbers 1 to 9. There are some rows and columns which form correct arithmetic expressions.

EXAMPLE:

UNIQUE SOLUTION:

Puzzle No.140

This is a Minesweeper puzzle made by Deb Mohanty.

PUZZLE NO.140: MINESWEEPER (24 Mines)

SOLUTION:

Puzzle No.139

This is a Minesweeper puzzle made by Deb Mohanty.

PUZZLE NO.139: MINESWEEPER (24 Mines)

SOLUTION:

Puzzle No.138

This is a Digital Sudoku from the Japanese Sudoku Championship - 2007.

PUZZLE NO.138: DIGITAL SUDOKU (1~6)


SOLUTION:

Rules of 'Magic Square Sudoku'

Place numbers in the grid such that every row, column and 3x3 box contain the numbers 1 to 9. Shaded 3x3 squares are magic squares. The sum of the numbers in all rows, columns and two diagonals should be equal in a magic square.

EXAMPLE:


UNIQUE SOLUTION:

Rules of 'External Sudoku'

Place numbers in the grid such that every row, column and 3x3 box contain the numbers 1 to 9. Fill in the shaded square of seven cells per side with numbers 1 to 7 such that no two adjacent cells contain consecutive numbers.

EXAMPLE:


UNIQUE SOLUTION:

Rules of 'Cross Sudoku'

Place numbers in the grid such that the three rows, three columns and five 3x3 boxes contain the numbers 1 to 9. Digits cannot be repeated along any diagonal shown by an arrow.

EXAMPLE:


UNIQUE SOLUTION:

Rules of 'Windoku'

Place numbers in the grid such that every row, column and 3x3 box contain the numbers 1 to 9. Each of the four shaded 3x3 boxes must also contain the numbers 1 to 9.

EXAMPLE:


UNIQUE SOLUTION: