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Tag Archives: swordfish
Samurai Sudoku rules
I’ve been asked a few times to post some Samurai sudoku solving tips. Well – there aren’t any special tips that apply exclusively to Samurai. Standard Sudoku rules apply, but to make things clear for newcomers, I’d like to give a brief set of instructions. Rules of Samurai Sudoku 1. Each Samurai Sudoku puzzle consists […]
Posted in Samurai sudoku, Solving tips
Also tagged Classic Sudoku, HARD, hidden subsets, instructions, interactions, IQ, rules, samurai, Samurai Sudoku, solving tip, solving tips, standard sudoku, SUBSETS, suggestions, technique, x-wing
48 Responses
More Swordfish
I posted another classic Sudoku that requires Swordfish/X-Wing solving technique. You should practice this technique because at some stage I might post a Killer Sudoku that will require you to use this technique to solve the puzzle. Maybe. 🙂 Of course I also posted another Killer – it’s a Brain X. Have fun.
Posted in Killer Sudoku
Also tagged BRAIN, Classic Sudoku, IQ, killer, killer sudoku, solving technique, technique, x-wing
2 Responses
X-Wing
UPDATE: I changed the image to reflect an actual X-Wing. As a matter of fact, this is the puzzle that I posted a couple of days ago under the “daily Sudoku” page. Here is a quick explanation for the “X-Wing” technique. Suppose you reach the following position and you can’t go any further: Tweet You […]
Swordfish
As promised, I implemented the Swordfish classic Sudoku solving technique in my Perfect Sudoku software and generated a few puzzles. I just posted one of them on the Daily Sudoku page. However, I ran my generator and generated a couple of thousands Killer Sudokus and NONE of them required Swordfish, just as I speculated before. […]
Posted in Killer Sudoku, Solving tips
Also tagged Classic Sudoku, Daily Sudoku, IQ, killer, killer sudoku, Killer Sudokus, Perfect Sudoku, solving technique, sudoku solving technique, technique, x-wing
8 Responses
