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I have been playing sudokus for about a month now and I have been constantly improving, but I feel like I am hitting a wall now.

My best time for hard is 3:34, but when I accidently started an easy game, thinking it was a hard one, I got the time 3:25.

I know that times under 3 minutes are possible and achievable, but the time I needed to solve an easy puzzle with my current tactic for hard puzzles made me realizee that it might take too long to always add pencil marks for every number.

Knubble

edit: I am using Digit first already, aswell as auto erase pencil ]]> http://www.genina.com/posts/preList/421/1331.page http://www.genina.com/posts/preList/421/1331.page GMT
You've only been playing a month and already your times are pretty good. Give it a few years?]]> http://www.genina.com/posts/preList/421/1334.page http://www.genina.com/posts/preList/421/1334.page GMT
mark all the possible number as fast as you can (try to mark all the number before it reach 2min) then, solve it as fast as you can

with lots of practice and luck, you will be able to solve it within 2-3min

my best time for extreme is 2.53 using this

my friend who usually solve extreme puzzle around 7-10min suddenly able to solve it around 3min after i taught him this technique.

i think its possible to solve it within 2:30-2:40, depend on your luck and reaction speed

i solve it without cheating, guessing, helper, validate etc

it can be done, goodluck]]> http://www.genina.com/posts/preList/421/1355.page http://www.genina.com/posts/preList/421/1355.page GMT http://www.genina.com/posts/preList/421/1392.page http://www.genina.com/posts/preList/421/1392.page GMT