If you're still stuck, double check on X wings and maybe skyscrappers, or even a 2 string kite. When you have a bundle of cells with pairings, start to look for XY wings or even the XYZ wing. Next, find hidden singles, or the next step is to look for naked pairs or triples, sometimes those pairs/triples are pointed pairs and triples, which helps you eliminate more possibilities.
SUDOKU STRATEGY REDDIT HOW TO
I still use Snyder with paper puzzles, and you can learn how to mark candidates in ways that are more efficient and less confusing.įirst step, write possibilities in every cell when you don't see an obvious giveaway. This will allow you to spot many different useful patterns, and the value of this outweighs the value of Snyder. (highlighting all the remaining positions for a selected candidate number).
On the other hand, if you use a computer-aided solver, with autofill, you want to use a solver that allows candidate highlighting. Until you finally have all candidates, having found box triples. Then, fill in box triads (3 positions per box), and again do this for all boxes, then 4,, etc. To move beyond Snyder Notation, the optimal next step is not to "fill in all candidates." Snyder fills in box doubles (two positions for a candidate per box). Not necessarily "wrong," but not the best practice. You will also be given, on occasion, poor advice. You can present where you are "stuck," and you'll be advised, and not only with the "next step," which is a common illusion, but how to find the patterns.
SUDOKU STRATEGY REDDIT CODE
You can load the puzzles into a solver - and often the code is given to make this fast and easy. Over time, the most difficult sudoku are presented here, with guidance as to how to solve them. The best way to learn, I suggest, is to follow this subreddit. I've been thinking of creating slide shows that where you could go back and forth, to the next step. Animation videos are a poor way to learn, in fact, because of the problem of pacing. Cracking the Cryptic will lead you astray with hard puzzles, which they mostly avoid.
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