Asian Sudoku Championship 2025
LMI Launches Puzzle Expo!
Announcing "LMI Beginners' Sudoku Contests"363 posts • Page 14 of 15 • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
@ 2014-07-21 9:35 AM (#16156 - in reply to #15140) (#16156) Top

Administrator



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Administrator posted @ 2014-07-21 9:35 AM

July Beginners' Sudoku Contest

Types

Here are the types for the July Edition of LMI Beginners' Sudoku Contest - http://logicmastersindia.com/BeginnersSudoku/types/?test=B201407

• Trio Sudoku
• Diagonal Sudoku
• Extra Region Sudoku
• Arrow Sudoku

Since we just had Times Sudoku Championship, we have picked up 2 types (Trio and Diagonal) from the regional finals, we are introducing the other 2 types to the new players.

Dates

23rd - 28th July (including both dates)

Author :

All 8 Sudokus are written by Rohan Rao. As per http://rohanrao91.blogspot.in, Rohan is a three-time Indian puzzle champion and a three-time Indian sudoku champion.

@ 2014-07-23 8:45 AM (#16168 - in reply to #7911) (#16168) Top

Administrator



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Country : India

Administrator posted @ 2014-07-23 8:45 AM

July Beginners' Sudoku Contest has started


Link for Classics round - http://logicmastersindia.com/BeginnersSudoku/?Part=C
Link for Variants round - http://logicmastersindia.com/BeginnersSudoku/?Part=V
Link for score page - http://logicmastersindia.com/BeginnersSudoku/score.asp



@ 2014-07-23 12:16 PM (#16169 - in reply to #16168) (#16169) Top

lakshmisv



Posts: 24
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lakshmisv posted @ 2014-07-23 12:16 PM

I am clueless on how to solve the arrow sudoku - the rest were fine. Once the competition is over, would be grateful if someone could give me a few pointers on how to start. Thanks
@ 2014-07-23 12:29 PM (#16170 - in reply to #16169) (#16170) Top

vopani



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vopani posted @ 2014-07-23 12:29 PM

lakshmisv - 2014-07-23 12:16 PM

I am clueless on how to solve the arrow sudoku - the rest were fine. Once the competition is over, would be grateful if someone could give me a few pointers on how to start. Thanks

We will provide solving steps for Arrow once the competition ends. Hope you enjoyed the other sudokus!
@ 2014-07-23 8:54 PM (#16172 - in reply to #16170) (#16172) Top

margareta456



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Country : Poland

margareta456 posted @ 2014-07-23 8:54 PM

have some question, because when i started i claimed as a begginer, because i was. now i have trained for some time and dont now if i should still start as a beginner or maybe seasoner. It's depend of our position in LMI ratings? Or i can change it due to my own feelings who i am?
@ 2014-07-23 11:19 PM (#16174 - in reply to #16156) (#16174) Top

auroux



Posts: 145
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Country : France

auroux posted @ 2014-07-23 11:19 PM

The Arrow sudoku was indeed quite tricky -- not exactly beginner stuff in my opinion.
Apart from that, on the classics I must have set a new record for the number of incorrect solves and broken puzzles. For some reason it took me 3 attempts to get each of the first two puzzles right... :( when I submitted all my answers after 12 minutes, little did I know that my final solve time would be more than twice that.
Professional musicians often claim that a catastrophic general rehearsal is the best guarantee that the concert itself will go well, so perhaps I should take comfort in playing so badly just a few weeks before the WPC...
Denis

@ 2014-07-24 3:45 AM (#16176 - in reply to #16156) (#16176) Top

achan1058



Posts: 80
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Country : Canada

achan1058 posted @ 2014-07-24 3:45 AM

The arrow was indeed quite nasty, especially near the end. I ended up having to use some kind of cycle strategy to eliminate a digit.

This contest probably serve as my "most typo per question" as well, having entered 25% of the puzzles incorrectly.
@ 2014-07-24 4:58 AM (#16177 - in reply to #16172) (#16177) Top

auroux



Posts: 145
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Country : France

auroux posted @ 2014-07-24 4:58 AM

margareta456 - 2014-07-23 7:54 AM - wrote:have some question, because when i started i claimed as a begginer, because i was. now i have trained for some time and dont now if i should still start as a beginner or maybe seasoner. It's depend of our position in LMI ratings? Or i can change it due to my own feelings who i am?
As far as I know, It's entirely up to you whether you want to compete as Beginner or Seasoner, depending on how you feel -- unless you have a high LMI rating, in which case you will be forced to compete as a Seasoner.

Edited by auroux 2014-07-24 4:59 AM
@ 2014-07-24 11:33 AM (#16180 - in reply to #16172) (#16180) Top

prasanna16391



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prasanna16391 posted @ 2014-07-24 11:33 AM

margareta456 - 2014-07-23 8:54 PM

have some question, because when i started i claimed as a begginer, because i was. now i have trained for some time and dont now if i should still start as a beginner or maybe seasoner. It's depend of our position in LMI ratings? Or i can change it due to my own feelings who i am?


Once you have chosen to be a beginner, you can become a Seasoner in two main ways,
1. Using LMI ratings/performance on these tests/performance on Monthly tests, there are 4 criteria to get bumped up automatically.
2. If you want to make the change, you may request one of the admins to bump you up manually.
@ 2014-07-24 1:56 PM (#16181 - in reply to #16156) (#16181) Top

coolsprite



Posts: 1

Country : India

coolsprite posted @ 2014-07-24 1:56 PM

The arrow sudoku was the best. First time I am participating in such online sudokus. I could do all the other 7 online and had submitted and finished off yesterday. But today I took the Arrow sudoku on a printout and with a beautiful logic could complete successfully. Wonderful feeling... even if the timing looks awry.... Thanks once again.
@ 2014-07-26 6:24 PM (#16188 - in reply to #16156) (#16188) Top

himanshu_mittal



Posts: 4

Country : India

himanshu_mittal posted @ 2014-07-26 6:24 PM

Mistakenly I did not submitted my answers before 40 minutes. I submit the answers of 3 sudokus at 40:25 and arrow sudoku at 64:31. will i get full points for first 3 sudokus or only half points?
@ 2014-07-27 4:18 AM (#16191 - in reply to #16156) (#16191) Top

swaroop2011




Posts: 668
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swaroop2011 posted @ 2014-07-27 4:18 AM

Nice and Awesome Puzzles.
Trio was nice theme.
Arrow literally killed my time took 10 min on that.
@ 2014-07-27 4:42 PM (#16193 - in reply to #16156) (#16193) Top

playee



Posts: 12

Country : India

playee posted @ 2014-07-27 4:42 PM

The arrow Sudoku was a real test to the logic. I submitted the classics well within time and also the 3 variants again in time but the arrow sudoku was a killer. The first time i submitted i got it wrong and then it took almost 100 mins extra to solve the puzzle correctly. I really enjoyed solving it finally though I lost on the time factor. Awaiting eagerly for the next beginners contest already.
@ 2014-07-28 2:21 AM (#16198 - in reply to #16156) (#16198) Top

winash26



Posts: 2

winash26 posted @ 2014-07-28 2:21 AM

I have been trying to participate for a very long time but the plugin just isnt right some body plz tell me what to do about it.
@ 2014-07-28 5:50 AM (#16199 - in reply to #7911) (#16199) Top

swaroop2011




Posts: 668
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Country : India

swaroop2011 posted @ 2014-07-28 5:50 AM

@winash26
i guess you are talking about java flash plugin.
I don't think anything else is required.

You can try in other browsers like chrome, mozilla or opera. Also you can try installing the browser java flash plugin again.


Edited by Administrator : LMI does not use java.
@ 2014-07-28 6:33 AM (#16200 - in reply to #16198) (#16200) Top

Administrator



200010005002020
Country : India

Administrator posted @ 2014-07-28 6:33 AM

winash26 - 2014-07-28 2:21 AM

I have been trying to participate for a very long time but the plugin just isnt right some body plz tell me what to do about it.
You need adobe flash player ( http://get.adobe.com/flashplayer/ ) installed on your laptop / desktop. Do you have it? If not, can you have it installed?
@ 2014-07-28 7:17 AM (#16201 - in reply to #16200) (#16201) Top

swaroop2011




Posts: 668
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Country : India

swaroop2011 posted @ 2014-07-28 7:17 AM

Administrator - 2014-07-28 6:33 AM

winash26 - 2014-07-28 2:21 AM

I have been trying to participate for a very long time but the plugin just isnt right some body plz tell me what to do about it.
You need adobe flash player ( http://get.adobe.com/flashplayer/ ) installed on your laptop / desktop. Do you have it? If not, can you have it installed?


oops sorry my mistake :)
@ 2014-07-29 3:01 PM (#16209 - in reply to #16170) (#16209) Top

lakshmisv



Posts: 24
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Country : India

lakshmisv posted @ 2014-07-29 3:01 PM

Can you please give me tips now on how to solve the 'Arrow' problem?

Thanks
@ 2014-07-29 3:51 PM (#16210 - in reply to #16209) (#16210) Top

lakshmisv



Posts: 24
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Country : India

lakshmisv posted @ 2014-07-29 3:51 PM

Please ignore this message - I figured it out thanks to a tip from Deb Mohanty
@ 2014-07-29 7:41 PM (#16211 - in reply to #7911) (#16211) Top

vopani



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Country : India

vopani posted @ 2014-07-29 7:41 PM

This is the first Beginners Contest I've authored, and it was a sudden plan when Deb and I decided I should conduct one before the WSC-WPC fever sets in.

I hate creating Classics (like many Authors), but since I had no choice, I pushed myself and created 3 Classics (Classic 1, 2, 3) each having a different kind of solve. I think I got tired then and created a simple fourth Classic with the 'triplets' theme :-)

Trio Sudoku: It was my personal favourite. It took me longer to create with a 1~9 diagonal theme than any normal Trio, but I was satisfied with the puzzle. It had a nice solve and I'm sure all of you enjoyed solving this :P

Diagonal Sudoku: I like Diagonal Sudoku with 3 blank rows, it forces solvers to put in those digits using the diagonal. Maybe next time I'll try 4 blank rows!

Extra Region Sudoku: Nothing special here, just a pleasant design to see (I think!) and a simple symmetry of givens. I didn't want too many digits to be filled using Classic rules, and I think that stands true for this puzzle.

Arrow Sudoku: There must be something to test solvers, right? I admit the Arrow was not trivial, it had a tight opening in the bottom-left of the grid, but after that, the solve is very smooth. Lots of players struggled solving this variant and I've posted one (the easiest I could think of) solving path. You can have a look here: http://rohanrao91.blogspot.in/2014/07/beginners-contest-on-lmi.html

I'm glad to see 295 participants, though crossing 300 would've been nice :-|, but thanks a lot for participating and I hope you enjoyed.
Congrats to the top-3 Beginners: sworls (USA), anti-inequality (Turkey) and ViRa (India) and the top-3 Seasoners: Kota (Japan), Timothy (France) and deu (Japan).

Feels nice to finally conduct a Beginners Contest and hope to see many more contests and sudokus in future!
@ 2014-07-29 8:31 PM (#16212 - in reply to #16211) (#16212) Top

Fred76




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Fred76 posted @ 2014-07-29 8:31 PM

Rohan Rao - 2014-07-29 7:41 PM

Lots of players struggled solving this variant and I've posted one (the easiest I could think of) solving path. You can have a look here: http://rohanrao91.blogspot.in/2014/07/beginners-contest-on-lmi.html


I find your explanation about the 1 in R8C4 quite confusing. I imagine it can be struggling to try to "solve" these 2 arrows independently. If you take care of both arrows together it becomes very easy:
Considering that the maximum of the sum of both cells R9C23 is 4+5=9, then the sum of the three cells R7C45 and R8C4 has to be <9, hence must contain a 1, which can be placed only at R8C4.
There is even no need to write candidates ;)

I liked this sudoku very much, and I remember I explained this "technique" about taking care of several arrows together in a Swiss federation newsletter (...a bit sad that other swiss players taking part didn't solve this sudoku).

See you in London

Fred
@ 2014-07-29 10:13 PM (#16214 - in reply to #16212) (#16214) Top

gaurav.kjain



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gaurav.kjain posted @ 2014-07-29 10:13 PM

The way I got it was

R9 C23 could be from 3/4/5 so other than 5 , 3/4 has 1 in their addition combination. which has to in one of the cells even if 5 is one of the cells.
so 1 has to be in one of the 4 cells(R7 C45 and R8 C34), which can only come at R8C4.

Since only single 1 comes in these 4 cells which will also provide other clue, that is R9 C23, one of this should contain 5.


Edited by gaurav.kjain 2014-07-29 10:16 PM
@ 2014-07-29 10:39 PM (#16215 - in reply to #16212) (#16215) Top

vopani



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vopani posted @ 2014-07-29 10:39 PM

Fred76 - 2014-07-29 8:31 PM

Considering that the maximum of the sum of both cells R9C23 is 4+5=9, then the sum of the three cells R7C45 and R8C4 has to be <9, hence must contain a 1, which can be placed only at R8C4.
There is even no need to write candidates ;)

Yes, this is something even I missed. Thanks!

See you in London

Fred

Yes :-)

gaurav.kjain - 2014-07-29 10:13 PM

The way I got it was

R9 C23 could be from 3/4/5 so other than 5 , 3/4 has 1 in their addition combination. which has to in one of the cells even if 5 is one of the cells.
so 1 has to be in one of the 4 cells(R7 C45 and R8 C34), which can only come at R8C4.

Since only single 1 comes in these 4 cells which will also provide other clue, that is R9 C23, one of this should contain 5.

There are multiple ways of figuring out the bottom-left... but either ways, I think it does take a while to identify the opening, especially when you are solving under time-pressure!
@ 2014-07-30 1:02 PM (#16222 - in reply to #16156) (#16222) Top

mohanprashanth



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Country : India

mohanprashanth posted @ 2014-07-30 1:02 PM

Where can I view my LMI rating points?
@ 2014-07-30 1:33 PM (#16224 - in reply to #16222) (#16224) Top

vopani



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vopani posted @ 2014-07-30 1:33 PM

mohanprashanth - 2014-07-30 1:02 PM

Where can I view my LMI rating points?

Click on your name: http://logicmastersindia.com/forum/view-profile.asp?action=view&uid...
Announcing "LMI Beginners' Sudoku Contests"363 posts • Page 14 of 15 • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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