Some may not like the fact that today’s puzzle isn’t actually a SquareWisdom puzzle, instead, it’s actually a true hybrid between Killer Sudoku and Kendoku. Having implemented Kendoku puzzles into my solver&generator program, it was a no brainer to extend it a little further and allow all four operators for my Killer Sudoku puzzles. And […]
Next in line – Kendoku with unknown cages! This is similar to “Zero Killer Sudoku” where some cells do not belong to any cages. This one is relatively easy, but rest assured there are more difficult ones to come! 🙂 7×7 Kendoku UC (unknown cages) for Tuesday, October 7, 2008. CalcuDoku for Tuesday, Oct 07, […]
Today’s puzzle is a diagonal Kendoku variant. In addition to all other standard Kendoku rules, there is one extra for this puzzle: the numbers cannot be repeated on either diagonal, just like they can’t be repeated on any row/column. This is marked in the puzzle with an “X” across. I’m posting two versions of the […]
Well, a little later than anticipated, I am ready to show you my first Kendoku (aka Square Wisdom) puzzle! And to compensate for being late, I have created something really special – the first ever (?) Overlapping Kendoku (CanCan, Square Wisdom) puzzle! If you have seen overlapping Kendoku puzzles elsewhere – please let me know. […]
Here is very difficult Killer Sudoku puzzle. There are two Zero Killer Sudoku puzzles overlapping each other in the TwoDoku format. The difficulty is rated IQ. What do you think? Zero Killer Twodoku for Saturday, September 20, 2008 Click on the puzzle thumbnail to access the puzzle.
The two anti-chess variants anti-knight and anti-camel cannot both exist on a sudoku grid with the standard 3×3 nonets, so I’ve removed the nonets!  In chess, a knight moves 2 cells horizontally and 1 cell vertically or vise versa. Since this puzzle is anti-knight, none of the red X’s below can contain a 5 because the center […]
Rules: Solve the puzzle so that the numbers in every horizontal and vertical region add up to the sum indicated for that region. Numbers CAN NOT be repeated in any region. Additional Rule: The yellow groups of 3×3 blocks contain the numbers 1-9 once and only once.  It took me about 10 hours spread out […]
Djape has kindly granted me my own corner as well, which I will use to present my own hand-designed Saturday Specials. We’ll start things off with a big one. Samurai: This puzzle consists of 5 overlapping grids, which on their own don’t neccessarily have a unique solution, but together they do. X: Along the diagonal lines […]
After a few weekends without any special puzzles, now I present you with another Gattai-4 non-consecutive Sudoku puzzle. This time, it’s a (somewhat forgotten) Butterfly Sudoku variation. The 4 sub-puzzles heavily overlap, so be careful! Non-consecutive Butterfly (Gattai-4) Sudoku for Saturday, May 10, 2008. Difficulty: Brain Rules: Solve the puzzle so that any two horizontally […]
A few people have requested more non-consecutive puzzles and, as usual, I’m happy to fulfill your demands. This time is a Gattai-4 non-consecutive puzzle. Non-consecutive Ring (Gattai-4) Sudoku for Saturday, April 5, 2008. Difficulty: Brain Rules: Solve the puzzle so that any two horizontally or vertically adjacent cells DO NOT contain two consecutive numbers (1 […]
