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Classic sudoku
rules
Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns, 3x3 box.Today's puzzle: Renban Groups
rules
Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns, 3x3 box. Additionally, shaded cells in each 3x3 box must contain consecutive digits (example: 2, 3, 4; 6, 7, 8, 9 etc.).- 01.05.2012 - Jigsaw sudoku
- 02.05.2012 - Diagonal sudoku
- 03.05.2012 - Windoku
- 04.05.2012 - Jigsaw sudoku
- 05.05.2012 - Diagonal sudoku
- 06.05.2012 - Windoku
- 07.05.2012 - Greater Than
- 08.05.2012 - Consecutive sudoku
- 09.05.2012 - Greater Than
- 10.05.2012 - Consecutive sudoku
- 11.05.2012 - Diagonal and Windoku
- 12.05.2012 - Irregular and Consecutive
- 13.05.2012 - Diagonal sudoku
- 14.05.2012 - Diagonal and Greater Than
- 15.05.2012 - Consecutive sudoku
- 16.05.2012 - Windoku
- 17.05.2012 - Jigsaw sudoku
- 18.05.2012 - Greater Than
- 19.05.2012 - Diagonal and Windoku
- 20.05.2012 - Irregular and Consecutive
- 21.05.2012 - Diagonal sudoku
- 22.05.2012 - Windoku
- 23.05.2012 - Even sudoku
- 24.05.2012 - Diagonal sudoku
- 25.05.2012 - Jigsaw sudoku
- 26.05.2012 - Diagonal Odd Sudoku
- 27.05.2012 - Non-consecutive sudoku
- 28.05.2012 - Skyscrapers
- 29.05.2012 - Diagonal sudoku
- 30.05.2012 - Odd sudoku
- 31.05.2012 - Quadruple
- 01.06.2012 - Diagonal Even
- 02.06.2012 - Jigsaw sudoku
- 03.06.2012 - Windoku
- 04.06.2012 - Five Pair Sudoku
- 05.06.2012 - Magic Summer Sudoku
- 06.06.2012 - Gappy Consecutive Sudoku
- 07.06.2012 - Alternative Sudoku
- 08.06.2012 - Arrow Sudoku
- 09.06.2012 - Quadruple
- 10.06.2012 - Diagonal sudoku
- 11.06.2012 - Twin Detector Sudoku
- 12.06.2012 - Odd sudoku
- 13.06.2012 - Kropki
- 14.06.2012 - Thermo-sudoku
- 15.06.2012 - Diagonal sudoku
- 16.06.2012 - Even sudoku
- 17.06.2012 - Mathdoku
- 18.06.2012 - Skyscrapers
- 19.06.2012 - Even sudoku
- 20.06.2012 - Diagonal Sudoku
- 21.06.2012 - Consecutive sudoku
- 22.06.2012 - Jigsaw sudoku
- 23.06.2012 - Sum Sudoku
- 24.06.2012 - Non-consecutive sudoku
- 25.06.2012 - Diagonal sudoku
- 26.06.2012 - Windoku
- 27.06.2012 - Consecutive sudoku
- 28.06.2012 - Greater Than
- 29.06.2012 - Jigsaw sudoku
- 30.06.2012 - Odd sudoku
- 01.07.2012 - Sudoku extraregions
- 02.07.2012 - Diagonal even
- 03.07.2012 - Mathdoku
- 04.07.2012 - Kropki
- 05.07.2012 - Sudoku extraregions
- 06.07.2012 - Jigsaw sudoku
- 07.07.2012 - Greater Than
- 08.07.2012 - Diagonal sudoku
- 09.07.2012 - Quadruple
- 10.07.2012 - Odd sudoku
- 11.07.2012 - Diagonal and Windoku
- 12.07.2012 - Skyscrapers
- 13.07.2012 - Non-consecutive sudoku
- 14.07.2012 - Diagonal sudoku
- 15.07.2012 - Jigsaw sudoku
- 16.07.2012 - The greater
- 17.07.2012 - Antiknight (to fullfill jzverina's wish)
- 18.07.2012 - Even sudoku
- 19.07.2012 - Diagonal sudoku
- 20.07.2012 - Consecutive sudoku
- 21.07.2012 - Jigsaw sudoku
- 22.07.2012 - Outside sums
- 23.07.2012 - Thermo-sudoku (the competition variant was prepared by player KrtekHonza)
- 24.07.2012 - Odd sudoku
- 25.07.2012 - Non-consecutive sudoku
- 26.07.2012 - Mathdoku (to fullfill Ziti's wish)
- 27.07.2012 - Diagonal sudoku
- 28.07.2012 - Greater Than
- 29.07.2012 - Little killer
- 30.07.2012 - Arrow Sudoku (the competition variant was prepared by player KrtekHonza)
- 31.07.2012 - Diagonal sudoku
- 01.08.2012 - Jigsaw sudoku
- 02.08.2012 - Kropki
- 03.08.2012 - Thermo-sudoku (the competition variant was prepared by player KrtekHonza)
- 04.08.2012 - Even sudoku
- 05.08.2012 - Skyscrapers
- 06.08.2012 - Diagonal sudoku
- 07.08.2012 - Little killer (the competition variant was prepared by player KrtekHonza)
- 08.08.2012 - Antiknight
- 09.08.2012 - Odd sudoku
- 10.08.2012 - Arrow Sudoku (the competition variant was prepared by player KrtekHonza)
- 11.08.2012 - Windoku
- 12.08.2012 - Non-consecutive sudoku
- 13.08.2012 - Diagonal sudoku
- 14.08.2012 - Antiknight
- 15.08.2012 - Killer sudoku
- 16.08.2012 - Untouchable
- 17.08.2012 - Even sudoku
- 18.08.2012 - Antidiagonal sudoku
- 19.08.2012 - Little killer (the competition variant was prepared by player KrtekHonza)
- 20.08.2012 - Sudoku extraregions
- 21.08.2012 - Diagonal sudoku
- 22.08.2012 - More-Less sudoku (to fullfill sudophile's wish)
- 23.08.2012 - Greater Than
- 24.08.2012 - Odd sudoku
- 25.08.2012 - Killer sudoku
- 26.08.2012 - Consecutive sudoku
- 27.08.2012 - Jigsaw sudoku
- 28.08.2012 - Diagonal sudoku
- 29.08.2012 - Quadruple
- 30.08.2012 - Twin Detector Sudoku
- 31.08.2012 - Thermo-sudoku (the competition variant was prepared by player KrtekHonza)
- 01.09.2012 - Even sudoku
- 02.09.2012 - Outside sums
- 03.09.2012 - Killer sudoku
- 04.09.2012 - Jigsaw sudoku
- 05.09.2012 - Kropki
- 06.09.2012 - Diagonal sudoku
- 07.09.2012 - Windoku
- 08.09.2012 - Odd sudoku
- 09.09.2012 - No four in a grow Sudoku
- 10.09.2012 - Sudoku extraregions
- 11.09.2012 - Arrow Sudoku (the competition variant was prepared by player KrtekHonza)
- 12.09.2012 - Greater Than
- 13.09.2012 - Diagonal sudoku
- 14.09.2012 - Windoku
- 15.09.2012 - Non-consecutive sudoku
- 16.09.2012 - Even sudoku
- 17.09.2012 - Renban sudoku (the competition variant was prepared by player jzverina)
- 18.09.2012 - Jigsaw sudoku
- 19.09.2012 - Diagonal sudoku
- 20.09.2012 - No three in row consecutive sudoku (the competition variant was prepared by player jzverina)
- 21.09.2012 - Quadruple
- 22.09.2012 - Odd sudoku
- 23.09.2012 - Antiknight
- 24.09.2012 - Little killer (the competition variant was prepared by player KrtekHonza)
- 25.09.2012 - Diagonal sudoku
- 26.09.2012 - Skyscrapers
- 27.09.2012 - Twin Detector Sudoku
- 28.09.2012 - Sum sudoku
- 29.09.2012 - Even sudoku
- 30.09.2012 - Sudoku extraregions
- 01.10.2012 - Jigsaw sudoku
- 02.10.2012 - Diagonal sudoku
- 03.10.2012 - Five Pair Sudoku
- 04.10.2012 - Killer sudoku
- 05.10.2012 - Alternative Sudoku
- 06.10.2012 - Odd sudoku
- 07.10.2012 - Antidiagonal sudoku
- 08.10.2012 - Untouchable
- 09.10.2012 - Diagonal sudoku
- 10.10.2012 - Palindrome sudoku (to fullfill sudophile's wish)
- 11.10.2012 - Antiknight
- 12.10.2012 - XV sudoku (to fullfill MrLiang's wish)
- 13.10.2012 - Even sudoku
- 14.10.2012 - Greater Than Killer (to fullfill squick's wish)
- 15.10.2012 - Diagonal and Windoku
- 16.10.2012 - Consecutive Sudoku
- 17.10.2012 - Diagonal Sudoku
- 18.10.2012 - Jigsaw Sudoku
- 19.10.2012 - No Four in a Grow Sudoku
- 20.10.2012 - Diagonal Odd Sudoku
- 21.10.2012 - Mathdoku (to fullfill Ziti's wish)
- 22.10.2012 - Disjoint Groups
- 23.10.2012 - Diagonal Sudoku
- 24.10.2012 - Symmetric Unequal
- 25.10.2012 - Queens
- 26.10.2012 - Touchy
- 27.10.2012 - Sudoku Extraregions
- 28.10.2012 - Trio Sudoku (to fullfill dp_94's wish)
- 29.10.2012 - Little Killer
- 30.10.2012 - Diagonal Sudoku
- 31.10.2012 - Non-consecutive Sudoku
- 01.11.2012 - Sequences Sudoku (the competition variant was prepared by player MrLiang)
- 02.11.2012 - Quadruple
- 03.11.2012 - Greater Than
- 04.11.2012 - Odd Sudoku
- 05.11.2012 - Group Sum Sudoku (the competition variant was prepared by player MrLiang)
- 06.11.2012 - Diagonal Sudoku
- 07.11.2012 - Jigsaw Sudoku
- 08.11.2012 - Windoku
- 09.11.2012 - Pandigital sudoku (the competition variant was prepared by player MrLiang)
- 10.11.2012 - Kropki
- 11.11.2012 - Even Sudoku
- 12.11.2012 - Untouchable
- 13.11.2012 - Diagonal Sudoku
- 14.11.2012 - Queens
- 15.11.2012 - Consecutive sudoku (the competition variant was prepared by player MrLiang)
- 16.11.2012 - Antiknight
- 17.11.2012 - XV Sudoku
- 18.11.2012 - Odd Sudoku
- 19.11.2012 - Disjoint Groups
- 20.11.2012 - Diagonal Sudoku
- 21.11.2012 - Twin Detector Sudoku
- 22.11.2012 - Outside Sums
- 23.11.2012 - Kropki (the competition variant was prepared by player MrLiang)
- 24.11.2012 - Symmetric Unequal
- 25.11.2012 - Even Sudoku
- 26.11.2012 - Greater Than
- 27.11.2012 - Diagonal Sudoku
- 28.11.2012 - Killer Sudoku
- 29.11.2012 - Jigsaw Sudoku
- 30.11.2012 - Antidiagonal Sudoku
- 01.12.2012 - Sudoku Extraregions
- 02.12.2012 - Odd Sudoku
- 03.12.2012 - Skyscrapers
- 04.12.2012 - Diagonal Sudoku
- 05.12.2012 - Fortress Sudoku
- 06.12.2012 - Little Killer
- 07.12.2012 - Non-consecutive Sudoku
- 08.12.2012 - Thermo-sudoku
- 09.12.2012 - Prime Sudoku (the competition variant was prepared by player MrLiang)
- 10.12.2012 - Diagonal Sudoku
- 11.12.2012 - Diagonal Sudoku
- 12.12.2012 - Consecutive Sudoku
- 13.12.2012 - No Four in a Grow Sudoku
- 14.12.2012 - Sum Sudoku
- 15.12.2012 - Trio Sudoku (to fullfill jaku111's wish)
- 16.12.2012 - Alternative Sudoku
- 17.12.2012 - Antiknight
- 18.12.2012 - Diagonal Sudoku
- 19.12.2012 - Mathdoku
- 20.12.2012 - Kropki
- 21.12.2012 - Fortress Sudoku
- 22.12.2012 - Greater Than
- 23.12.2012 - Group Sum Sudoku (to fullfill jaku111's wish)
- 24.12.2012 - Jigsaw Sudoku
- 25.12.2012 - Snowflake (the competition variant was prepared by player MrLiang)
- 26.12.2012 - Killer Sudoku (to fullfill moon58's wish)
- 27.12.2012 - Greater Than (to fullfill Čert's wish)
- 28.12.2012 - Quadruple
- 29.12.2012 - Gappy Consecutive Sudoku
- 30.12.2012 - 3-Cyclic (the competition variant was prepared by player MrLiang)
- 31.12.2012 - Diagonal Sudoku
- 01.01.2013 - Renban Sudoku (the competition variant was prepared by player jzverina)
- 02.01.2013 - Windoku
- 03.01.2013 - The Greater
- 04.01.2013 - Jigsaw Sudoku
- 05.01.2013 - Three Different (the competition variant was prepared by player jzverina)
- 06.01.2013 - Diagonal Even Sudoku
- 07.01.2013 - Little Killer (the competition variant was prepared by player jzverina)
- 08.01.2013 - Diagonal Sudoku
- 09.01.2013 - Antiknight
- 10.01.2013 - No three in row consecutive sudoku (the competition variant was prepared by player jzverina)
- 11.01.2013 - Disjoint groups
- 12.01.2013 - Sudoku Extraregions
- 13.01.2013 - Odd Sudoku
- 14.01.2013 - Killer Sudoku (practice on SC9)
- 15.01.2013 - Diagonal Sudoku
- 16.01.2013 - XV Sudoku (practice on SC9)
- 17.01.2013 - Notwo Sudoku (practice on SC9)
- 18.01.2013 - Twin Detector Sudoku (practice on SC9)
- 19.01.2013 - Kropki (to fullfill jaku111's wish)
- 20.01.2013 - Even Sudoku
- 21.01.2013 - Mathdoku (practice on SC9)
- 22.01.2013 - The Greater (practice on SC9)
- 23.01.2013 - Quadruple (practice on SC9)
- 24.01.2013 - Fortress Sudoku (practice on SC9)
- 25.01.2013 - Antiknight (practice on SC9)
- 26.01.2013 - Diagonal Sudoku
- 27.01.2013 - Odd Sudoku
- 28.01.2013 - Sudoku Extraregions
- 29.01.2013 - Diagonal Sudoku
- 30.01.2013 - Difference Sudoku (the competition variant was prepared by player jzverina)
- 31.01.2013 - Consecutive Sudoku (the competition variant was prepared by player jzverina)
- 01.02.2013 - Sum Sudoku
- 02.02.2013 - Skyscrapers
- 03.02.2013 - Even Sudoku
- 04.02.2013 - Renban Groups (practice on LMI WPF Sudoku GP)
- 05.02.2013 - Coded Pair (practice on LMI WPF Sudoku GP)
- 06.02.2013 - Repeated Neighbours (practice on LMI WPF Sudoku GP)
- 07.02.2013 - Thermo-sudoku (practice on LMI WPF Sudoku GP)
- 08.02.2013 - Odd Even Frame (practice on LMI WPF Sudoku GP)
- 09.02.2013 - Disjoint Groups (practice on LMI WPF Sudoku GP)
- 10.02.2013 - Diagonal Sudoku (practice on LMI WPF Sudoku GP)
- 11.02.2013 - Odd Sudoku
- 12.02.2013 - Jigsaw Sudoku
- 13.02.2013 - Non-consecutive Sudoku
- 14.02.2013 - Order Sudoku (the competition variant was prepared by player jzverina)
- 15.02.2013 - Sudoku Extraregions
- 16.02.2013 - Outside Sums
- 17.02.2013 - Touchy
- 18.02.2013 - Between 1 and 9 (practice on DSM WPF Sudoku GP)
- 19.02.2013 - Equal Sudoku (practice on DSM WPF Sudoku GP)
- 20.02.2013 - Search Nine Sudoku (practice on DSM WPF Sudoku GP)
- 21.02.2013 - Arrow Sudoku (practice on DSM WPF Sudoku GP)
- 22.02.2013 - X-Sums Sudoku (practice on DSM WPF Sudoku GP)
- 23.02.2013 - Little Killer Killer Sudoku (practice on DSM WPF Sudoku GP)
- 24.02.2013 - Skyscrapers (practice on DSM WPF Sudoku GP)
- 25.02.2013 - Even Sudoku
- 26.02.2013 - Diagonal Sudoku
- 27.02.2013 - Consecutive Sudoku
- 28.02.2013 - Greater Than
- 01.03.2013 - Queens
- 02.03.2013 - Symmetric Unequal
- 03.03.2013 - Sudoku Extraregions
- 04.03.2013 - Diagonal Sudoku
- 05.03.2013 - Killer Sudoku
- 06.03.2013 - Arrow Sudoku
- 07.03.2013 - Diagonal and Windoku
- 08.03.2013 - Sum Skyscrapers (the competition variant was prepared by player jzverina)
- 09.03.2013 - Palindrome Sudoku
- 10.03.2013 - Odd Sudoku
- 11.03.2013 - Multiple Sudoku (the competition variant was prepared by player MrLiang)
- 12.03.2013 - Diagonal Sudoku
- 13.03.2013 - Zigzag Sudoku (the competition variant was prepared by player Mahyar)
- 14.03.2013 - Untouchable
- 15.03.2013 - Twin Detector Sudoku (to fullfill Black Tiger's wish)
- 16.03.2013 - Mathdoku
- 17.03.2013 - Diagonal Even Sudoku
- 18.03.2013 - Antiknight
- 19.03.2013 - Diagonal Sudoku
- 20.03.2013 - Jigsaw Sudoku
- 21.03.2013 - Quadruple
- 22.03.2013 - No Four in a Grow Sudoku
- 23.03.2013 - Five Pair Sudoku
- 24.03.2013 - Alternative Sudoku
- 25.03.2013 - Non-consecutive Sudoku
- 26.03.2013 - Diagonal Sudoku
- 27.03.2013 - Sum Sudoku
- 28.03.2013 - Fortress Sudoku
- 29.03.2013 - Little Killer
- 30.03.2013 - Kropki
- 31.03.2013 - Odd Sudoku
- 01.04.2013 - XV Sudoku
- 02.04.2013 - Diagonal Sudoku
- 03.04.2013 - Greater Than
- 04.04.2013 - Thermo-sudoku
- 05.04.2013 - Consecutive Sudoku
- 06.04.2013 - Diagonal Sudoku - Change!
- 07.04.2013 - Even Sudoku
- 08.04.2013 - Non-consecutive Sudoku
- 09.04.2013 - Diagonal Sudoku
- 10.04.2013 - Diagonal Skyscrapers (the competition variant was prepared by player jzverina)
- 11.04.2013 - The Greater
- 12.04.2013 - Killer Sudoku
- 13.04.2013 - Antidiagonal Sudoku
- 14.04.2013 - Sudoku Extraregions
- 15.04.2013 - Quadruple (practice on WPF Sudoku Grand Prix — Serbian Round)
- 16.04.2013 - Arrow Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
- 17.04.2013 - Tennis Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
- 18.04.2013 - Little Killer (practice on WPF Sudoku Grand Prix — Serbian Round)
- 19.04.2013 - Thermo-sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
- 20.04.2013 - Renban Groups (practice on WPF Sudoku Grand Prix — Serbian Round)
- 21.04.2013 - Jigsaw Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
- 22.04.2013 - Odd Sudoku
- 23.04.2013 - Diagonal Sudoku
- 24.04.2013 - Consecutive Sudoku
- 25.04.2013 - Antiknight
- 26.04.2013 - Greater Than
- 27.04.2013 - Windoku
- 28.04.2013 - Twin Detector Sudoku
- 29.04.2013 - Disjoint Groups
- 30.04.2013 - Diagonal Sudoku
- 01.05.2013 - Figure sudoku
- 02.05.2013 - Untouchable
- 03.05.2013 - Skyscrapers
- 04.05.2013 - Even Sudoku
- 05.05.2013 - Notwo Sudoku
- 06.05.2013 - XV Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 07.05.2013 - Diagonal Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 08.05.2013 - Thermo Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 09.05.2013 - Deficit Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 10.05.2013 - Killer Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 11.05.2013 - Surplus Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 12.05.2013 - Palindrome Sudoku (practice on WPF Sudoku Grand Prix — UK Sudoku Championship)
- 13.04.2013 - Diagonal Sudoku
- 14.04.2013 - Jigsaw Sudoku
- 15.05.2013 - Non-consecutive Sudoku
- 16.05.2013 - Odd Sudoku
- 17.05.2013 - Outside Sums
- 18.05.2013 - Mathdoku
- 19.05.2013 - Queens
- 20.05.2013 - Consecutive Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 21.05.2013 - Arrow Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 22.05.2013 - Thermo Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 23.05.2013 - Dynasty Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 24.05.2013 - Property Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 25.05.2013 - Jigsaw Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 26.05.2013 - Killer Sudoku (practice on WPF Sudoku Grand Prix — U.S. Sudoku Team Qualifying Test)
- 27.05.2013 - Sudoku Extraregions
- 28.05.2013 - Diagonal Sudoku
- 29.05.2013 - Windoku
- 30.05.2013 - Symmetric unequal
- 31.05.2013 - No Four in a Grow Sudoku
- 01.06.2013 - Odd Sudoku
- 02.06.2013 - Greater Than
- 03.06.2013 - Touchy
- 04.06.2013 - Diagonal Sudoku
- 05.06.2013 - Twin Detector Sudoku (to fullfill Black Tiger's wish)
- 06.06.2013 - Kropki
- 07.06.2013 - Alternative Sudoku
- 08.06.2013 - Even Sudoku
- 09.06.2013 - Fortress Sudoku (to fullfill Black Tiger's wish)
- 10.06.2013 - XV Sudoku (practice on NSC of Czech Republic)
- 11.06.2013 - Antiknight (practice on NSC of Czech Republic)
- 12.06.2013 - Worddoku (practice on NSC of Czech Republic)
- 13.06.2013 - Skyscrapers (practice on NSC of Czech Republic)
- 14.06.2013 - NEWS (practice on NSC of Czech Republic)
- 15.06.2013 - Odd Sudoku (practice on NSC of Czech Republic)
- 16.06.2013 - Diagonal Sudoku (practice on NSC of Czech Republic)
- 17.06.2013 - Even Sudoku
- 18.06.2013 - One Digit Unique Solution (practice on WPF Sudoku Grand Prix — Turkish Round)
- 19.06.2013 - Odd Tab (practice on WPF Sudoku Grand Prix — Turkish Round)
- 20.06.2013 - A or B (practice on WPF Sudoku Grand Prix — Turkish Round)
- 21.06.2013 - Antiknight
- 22.06.2013 - Notwo Sudoku
- 23.06.2013 - Diagonal Odd Sudoku
- 24.06.2013 - Jigsaw Sudoku (practice on WPF Sudoku Grand Prix — Italian Round)
- 25.06.2013 - Killer Sudoku (practice on WPF Sudoku Grand Prix — Italian Round)
- 26.06.2013 - Coast to Coast sudoku (practice on WPF Sudoku Grand Prix — Italian Round)
- 27.06.2013 - The Big Bang Theory Sudoku (practice on WPF Sudoku Grand Prix — Italian Round)
- 28.06.2013 - 1011 Sudoku (practice on WPF Sudoku Grand Prix — Italian Round)
- 29.06.2013 - Kropki (practice on WPF Sudoku Grand Prix — Italian Round)
- 30.06.2013 - Diagonal Sudoku
- 01.07.2013 - Sum Sudoku
- 02.07.2013 - Little Killer
- 03.07.2013 - Untouchable
- 04.07.2013 - Arrow Sudoku
- 05.07.2013 - Sudoku Extraregions
- 06.07.2013 - Antidiagonal Sudoku
- 07.07.2013 - Coded Pair
- 08.07.2013 - Diagonal Sudoku
- 09.07.2013 - Antiknight
- 10.07.2013 - Non-consecutive Sudoku
- 11.07.2013 - Killer Sudoku
- 12.07.2013 - No four in a grow Sudoku
- 13.07.2013 - Quadruple
- 14.07.2013 - Thermo Sudoku
- 15.07.2013 - Diagonal Sudoku
- 16.07.2013 - Kropki (the competition variant was prepared by player Black Tiger)
- 17.07.2013 - Non-consecutive Sudoku (to fullfill karzym's wish)
- 18.07.2013 - 4 as the Basic Operations (the competition variant was prepared by player Mahyar)
- 19.07.2013 - Bent Diagonal (to fullfill sudophile's wish)
- 20.07.2013 - Jigsaw Sudoku
- 21.07.2013 - Greater Than
- 22.07.2013 - Palindrome Sudoku (the competition variant was prepared by player Black Tiger)
- 23.07.2013 - Diagonal Sudoku
- 24.07.2013 - Classic & Jigsaw Sudoku (the competition variant was prepared by player Mahyar)
- 25.07.2013 - Windoku
- 26.07.2013 - Killer Sudoku (to fullfill karzym's wish)
- 27.07.2013 - Coast to Coast sudoku (to fullfill Black Tiger's wish)
- 28.07.2013 - Even Sudoku
- 29.07.2013 - Notwo Sudoku
- 30.07.2013 - Diagonal Sudoku
- 31.07.2013 - Odd Sudoku
- 01.08.2013 - Antiknight
- 02.08.2013 - XV Sudoku
- 03.08.2013 - Diagonal Sudoku
- 04.08.2013 - Even Sudoku
- 05.08.2013 - Windoku
- 06.08.2013 - Diagonal Sudoku
- 07.08.2013 - Sudoku Extraregions
- 08.08.2013 - Little Killer
- 09.08.2013 - Antidiagonal Sudoku (to fullfill karzym's wish)
- 10.08.2013 - Odd Sudoku
- 11.08.2013 - Consecutive Sudoku
- 12.08.2013 - Non-consecutive Sudoku
- 13.08.2013 - Diagonal Sudoku
- 14.08.2013 - Greater Than
- 15.08.2013 - Twin Detector Sudoku
- 16.08.2013 - Killer Sudoku
- 17.08.2013 - Even Sudoku
- 18.08.2013 - Outside Sums
- 19.08.2013 - Jigsaw Sudoku
- 20.08.2013 - Diagonal Sudoku
- 21.08.2013 - Quadruple
- 22.08.2013 - Sudoku Extraregions
- 23.08.2013 - Skyscrapers
- 24.08.2013 - Odd Sudoku
- 25.08.2013 - Fortress Sudoku
- 26.08.2013 - Non-consecutive Sudoku
- 27.08.2013 - Diagonal Sudoku
- 28.08.2013 - Even Sudoku
- 29.08.2013 - Little Killer
- 30.08.2013 - Diagonal Sudoku
- 31.08.2013 - Odd Sudoku
- 01.09.2013 - XV Sudoku
- 02.09.2013 - Diagonally Non-consecutive Sudoku
- 03.09.2013 - Diagonal Sudoku
- 04.09.2013 - Even Sudoku
- 05.09.2013 - Disjoint Groups
- 06.09.2013 - Thermo Sudoku (the competition variant was prepared by player KrtekHonza)
- 07.09.2013 - Odd Sudoku
- 08.09.2013 - Diagonal Sudoku
- 09.09.2013 - Diagonal Sudoku
- 10.09.2013 - Non-consecutive Sudoku
- 11.09.2013 - Alternative Sudoku
- 12.09.2013 - Mathdoku
- 13.09.2013 - No Four in a Grow Sudoku
- 14.09.2013 - Sudoku Pairs
- 15.09.2013 - Odd Lab
- 16.09.2013 - Antiknight (practice on SC10)
- 17.09.2013 - Disjoint Groups (practice on SC10)
- 18.09.2013 - Palindrome Sudoku (practice on SC10)
- 19.09.2013 - Killer Sudoku (practice on SC10)
- 20.09.2013 - Quadruple (practice on SC10)
- 21.09.2013 - Diagonal Sudoku
- 22.09.2013 - Even Sudoku
- 23.09.2013 - Diagonal Odd Sudoku
- 24.09.2013 - Diagonal Sudoku
- 25.09.2013 - Non-consecutive Sudoku
- 26.09.2013 - Jigsaw Sudoku
- 27.09.2013 - Pairs
- 28.09.2013 - Queens
- 29.09.2013 - Coded Pair
- 30.09.2013 - Diagonal Sudoku
- 01.10.2013 - Gappy Consecutive Sudoku (practice on WPF GP finals)
- 02.10.2013 - Point To Next (practice on WPF GP finals)
- 03.10.2013 - Arrow Sudoku (practice on WPF GP finals)
- 04.10.2013 - Tennis Sudoku (practice on WPF GP finals)
- 05.10.2013 - Sudoku Extraregions (practice on WPF GP finals)
- 06.10.2013 - Even/Odd Sudoku (practice on WPF GP finals)
- 07.10.2013 - Odd Lab (practice on WPF GP finals)
- 08.10.2013 - Coast to Coast sudoku (practice on WPF GP finals)
- 09.10.2013 - Diagonal Sudoku
- 10.10.2013 - Windoku
- 11.10.2013 - Outside Sums
- 12.10.2013 - Disjoint Groups
- 13.10.2013 - Odd Sudoku
- 14.10.2013 - Antiknight
- 15.10.2013 - Diagonal Sudoku
- 16.10.2013 - Twin Detector Sudoku
- 17.10.2013 - Jigsaw Sudoku
- 18.10.2013 - Top Heavy Sudoku (to fullfill sudophile's wish)
- 19.10.2013 - Untouchable
- 20.10.2013 - Even Sudoku
- 21.10.2013 - Diagonal Sudoku
- 22.10.2013 - Windoku
- 23.10.2013 - No Four in a Grow Sudoku
- 24.10.2013 - Killer Sudoku
- 25.10.2013 - Greater Than
- 26.10.2013 - Odd Sudoku
- 27.10.2013 - Fortress Sudoku
- 28.10.2013 - Non-consecutive Sudoku
- 29.10.2013 - Diagonal Sudoku
- 30.10.2013 - Disjoint Groups
- 31.10.2013 - X-Sums Sudoku
- 01.11.2013 - Classic & Jigsaw Sudoku
- 02.11.2013 - Sudoku Extraregions
- 03.11.2013 - Even Sudoku
- 04.11.2013 - Little Killer
- 05.11.2013 - Diagonal Sudoku
- 06.11.2013 - XV Sudoku
- 07.11.2013 - Untouchable
- 08.11.2013 - Outside Sums
- 09.11.2013 - Notwo Sudoku
- 10.11.2013 - Odd Sudoku
- 11.11.2013 - Jigsaw Sudoku
- 12.11.2013 - Diagonal Sudoku (the competition variant was prepared by player TiiT)
- 13.11.2013 - Even Sudoku
- 14.11.2013 - Killer Sudoku
- 15.11.2013 - Diagonal Sudoku
- 16.11.2013 - Non-consecutive Sudoku
- 17.11.2013 - Twin Detector Sudoku
- 18.11.2013 - Odd Sudoku
- 19.11.2013 - Diagonal Sudoku
- 20.11.2013 - Arrow Sudoku
- 21.11.2013 - Diagonal Sudoku
- 22.11.2013 - Odd Lab
- 23.11.2013 - Quadruple
- 24.11.2013 - Even Sudoku
- 25.11.2013 - Little Killer
- 26.11.2013 - Diagonal Sudoku
- 27.11.2013 - Antiknight
- 28.11.2013 - Windoku
- 29.11.2013 - Queens
- 30.11.2013 - Palindrome Sudoku
- 01.12.2013 - Odd Sudoku
