Indian Sudoku Championship 2013192 posts • Page 7 of 8 • 1 2 3 4 5 6 7 8
@ 2013-08-13 6:59 AM (#12270 - in reply to #11781) (#12270) Top

An LMI player



An LMI player posted @ 2013-08-13 6:59 AM

 How did you come to know about Indian Sudoku Championship? I am a regular visitor at LMI forum.
 Did the Instructions Booklet (IB) provide enough information about participating in ISC? Yes, mostly.
 Did you understand the Sudoku variations rules and examples from the IB? I understood most of them.
 Did you find enough easy Sudokus to solve during the championship? Yes, some of them were easy. I would have liked more easy puzzles.
 Did you find enough easy / familiar variations to solve during the championship? Yes, some of them were familiar. I would have liked more familiar types.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-13 9:00 AM (#12271 - in reply to #12267) (#12271) Top

debmohanty




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Country : India

debmohanty posted @ 2013-08-13 9:00 AM

skywalker - 2013-08-13 1:57 AM

After a long time I was a competitor on the sudoku test that Deb organize and I really enjoyed...
Congratulations to Prasanna for excellent performance and good luck to Indians in Beijing.
Ignoring the Screen Test, I think we have to go back 3 years (Mastermind Twins) which I organized and you participated.
You had spent so much time on Times Sudoku that I really didn't want to ask you to pre-test this one. Thank you so much for being there all the time.

I take this opportunity to thank the authors for providing some wonderful Sudokus.

Classic Sudokus, Sudo-Kurve, Thermo Sudoku, Arrow Sudoku - Thomas Snyder
Pinocchio Sudoku, Diagonal Sudoku, Killer Sudoku, Renban Sudoku - Bastien Vial-Jaime
Smashed Sums Sudoku, Vudoku - Serkan Yurekli

I am indebted to the test solvers - Bram, Gotroch, Matus, Nikola - who gave very significant input and feedback in a really short amount of time.

Thank you everyone for your kind help.

@ 2013-08-13 10:46 AM (#12279 - in reply to #11781) (#12279) Top

munna



Posts: 6

Country : India

munna posted @ 2013-08-13 10:46 AM

 How did you come to know about Indian Sudoku Championship? I am a regular visitor at LMI forum.
 Did the Instructions Booklet (IB) provide enough information about participating in ISC? Yes, mostly.
 Did you understand the Sudoku variations rules and examples from the IB? I understood most of them.
 Did you find enough easy Sudokus to solve during the championship? Yes, there were many of them.
 Did you find enough easy / familiar variations to solve during the championship? Yes, there were many of them.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-13 12:03 PM (#12280 - in reply to #11781) (#12280) Top

Black Tiger



Posts: 11

Country : Iran

Black Tiger posted @ 2013-08-13 12:03 PM

 How balanced do you think the puzzle types of this test were? Perfectly balanced
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Very nice
 What was your opinion of the booklet formatting and printing? Just right


@ 2013-08-13 12:48 PM (#12285 - in reply to #11781) (#12285) Top

An LMI player



An LMI player posted @ 2013-08-13 12:48 PM

 How balanced do you think the puzzle types of this test were? Fairly balanced
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Fairly Nice


@ 2013-08-13 1:20 PM (#12290 - in reply to #11781) (#12290) Top

davep



Posts: 43
2020
Country : United States

davep posted @ 2013-08-13 1:20 PM

 How balanced do you think the puzzle types of this test were? Perfectly balanced
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Very nice
 What was your opinion of the booklet formatting and printing? Just right


Enjoyed the test as always. Compliments to the authors, thanks for the challenge!
@ 2013-08-13 2:26 PM (#12291 - in reply to #11781) (#12291) Top

An LMI player



An LMI player posted @ 2013-08-13 2:26 PM

 How did you come to know about Indian Sudoku Championship? Others
 Did you understand the Sudoku variations rules and examples from the IB? I understood only a few of them.
 Did you find enough easy Sudokus to solve during the championship? No, there were really few easy puzzles.
 Did you find enough easy / familiar variations to solve during the championship? No, there were really few familiar types.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-13 3:40 PM (#12293 - in reply to #11781) (#12293) Top

wgryciuk



Posts: 24
20
Country : Poland

wgryciuk posted @ 2013-08-13 3:40 PM

 How balanced do you think the puzzle types of this test were? Fairly balanced
 What was your opinion of the distribution of easy/hard puzzles? A bit hard
 What did you think about the puzzle quality of the test? Very nice
 What was your opinion of the booklet formatting and printing? Just right


@ 2013-08-13 10:12 PM (#12294 - in reply to #12293) (#12294) Top

Administrator



20001000100100100100202020
Country : India

Administrator posted @ 2013-08-13 10:12 PM

Indian Sudoku Championship - Results


The Indian Sudoku Championship is officially over. Both the official Indian Score page as well as the International score page are now public. 15 participants submitted all 24 Sudokus correctly, including 3 Indians.

Congratulations once again to the trio of Prasanna Seshadri, Rohan Rao and Rishi Puri for a strong showing at the top again. Prasanna's score of 1232.7 points was good enough to defeat the defending champion Rohan who scored 1181.2 points. Times Champion, Rishi, had a close 3rd place finish with 1158.1 points. Some good performances from the experienced contenders, Gaurav Korde and Amit Sowani, and Kishore Kumar showing a lot of potential with a solid 6th place, building on his good performances in recent LMI tests as well as the Times Championship. The International top 3 places were taken by janoslaw, Kota and daisuke_t. Prasanna finished at an impressive 6th place in the international rankings.

Thank you all for participating, and please keep visiting the forum for more puzzle contests and discussions.

@ 2013-08-13 10:26 PM (#12295 - in reply to #11781) (#12295) Top

An LMI player



An LMI player posted @ 2013-08-13 10:26 PM

 How did you come to know about Indian Sudoku Championship? I am a regular visitor at LMI forum.
 Did the Instructions Booklet (IB) provide enough information about participating in ISC? Yes, mostly.
 Did you understand the Sudoku variations rules and examples from the IB? I understood all of them.
 Did you find enough easy Sudokus to solve during the championship? No, there were really few easy puzzles.
 Did you find enough easy / familiar variations to solve during the championship? Yes, some of them were familiar. I would have liked more familiar types.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-14 1:31 AM (#12296 - in reply to #11781) (#12296) Top

An LMI player



An LMI player posted @ 2013-08-14 1:31 AM

 How did you come to know about Indian Sudoku Championship? SMS from LMI
 Did the Instructions Booklet (IB) provide enough information about participating in ISC? Yes, mostly.
 Did you understand the Sudoku variations rules and examples from the IB? I understood all of them.
 Did you find enough easy Sudokus to solve during the championship? Yes, some of them were easy. I would have liked more easy puzzles.
 Did you find enough easy / familiar variations to solve during the championship? Yes, some of them were familiar. I would have liked more familiar types.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-14 11:14 AM (#12297 - in reply to #12294) (#12297) Top

amitsowani




Posts: 349
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Country : India

amitsowani posted @ 2013-08-14 11:14 AM

Administrator - 2013-08-13 10:12 PM

Indian Sudoku Championship - Results


Some good performances from the experienced contenders, Gaurav Korde and Amit Sowani


Technically this is my first ISC :P The last time I participated was in TSC back in 2007.
@ 2013-08-14 4:47 PM (#12305 - in reply to #11781) (#12305) Top

Administrator



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Country : India

Administrator posted @ 2013-08-14 4:47 PM

Password removed from Sudoku Booklet. Solutions appended at the end.
@ 2013-08-14 8:51 PM (#12312 - in reply to #12305) (#12312) Top

Junta



Posts: 3

Country : ITALY

Junta posted @ 2013-08-14 8:51 PM

Hello, is the solution of "Outside Sudoku" correct ?
If so, i do not understand the rules to solve it.
Thanks.

Marco
@ 2013-08-14 9:10 PM (#12313 - in reply to #12312) (#12313) Top

prasanna16391



Posts: 1723
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Country : India

prasanna16391 posted @ 2013-08-14 9:10 PM

Junta - 2013-08-14 8:51 PM

Hello, is the solution of "Outside Sudoku" correct ?
If so, i do not understand the rules to solve it.
Thanks.

Marco


Good catch. I think that somehow, the Instruction booklet's Outside Sudoku solution has been added here into this puzzle
@ 2013-08-14 10:00 PM (#12315 - in reply to #12313) (#12315) Top

Administrator



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Country : India

Administrator posted @ 2013-08-14 10:00 PM

prasanna16391 - 2013-08-14 9:10 PM

Junta - 2013-08-14 8:51 PM

Hello, is the solution of "Outside Sudoku" correct ?
If so, i do not understand the rules to solve it.
Thanks.

Marco


Good catch. I think that somehow, the Instruction booklet's Outside Sudoku solution has been added here into this puzzle
Fixed now - Download updated version
@ 2013-08-15 4:39 AM (#12325 - in reply to #12315) (#12325) Top

Fred76




Posts: 337
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Country : Switzerland

Fred76 posted @ 2013-08-15 4:39 AM

Thanks for having organized a beautiful test.

Having sudokus from different authors permitted to vary the difficulty and styles. I think I recognized some authors' style while solving a few puzzles (especially kurve, renban, vudoku) but it should have been difficult to "authenticate" authors for all puzzles (I was surprised that the killer was written by Bastien, for example).

This test was a bit particular for me, because my grandmother died sunday, so I was not looking to make a good result, only tried to think of anything else.

Puzzles created by Thomas were really easy for confirmed players. Kurve, thermo and arrow were very nice for beginners or less experienced players, (as there are many for a national championship), and a good sprint for others. (I created a lot of classic sudokus last month, so I could not help noticing the lack of symmetry of the second classic, with 2 digits added on the bottom left. I think it was possible to make a symmetric one with that pattern, without adding the 2 digits, but it's really a tiny detail).

I even didn't notice the theme of the 6*6 irregulars while solving. Nice construction ! Overlapping, shifted and deficit were nice.
Diagonal was a nice construction, with only 18 symetric givens without clue on diagonals and a nice pattern . I liked the logic of killer and renban. I was not fast on smashed sums, but it had a nice logical path, too. GT consecutive had lot of non-consecutive logic in it.
I was stuck for a while in outside sudoku, but that's quite normal as it is worth 115 points.
Like Prasanna, I was stuck in the even killer, but after having spotted the 5 odds in the 1rst column I wasn't able to find the 9 in R3C7, which was quite easy. So I lost at least 10 minutes on that one (I left it and finished to solve it at the end).

Congrats to Prasanna, Rohan and Rishi, Jan and the "pack of hungry Japanese players" and thanks again to the organizers !

Fred
@ 2013-08-15 11:28 AM (#12327 - in reply to #11781) (#12327) Top

fatemeh



Posts: 1

Country : Iran

fatemeh posted @ 2013-08-15 11:28 AM

hello, please help me........
@ 2013-08-15 11:30 AM (#12328 - in reply to #12327) (#12328) Top

prasanna16391



Posts: 1723
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Country : India

prasanna16391 posted @ 2013-08-15 11:30 AM

fatemeh - 2013-08-15 11:28 AM

hello, please help me........


Can you specify your problem?
@ 2013-08-15 8:09 PM (#12332 - in reply to #11781) (#12332) Top

gowrishankar



Posts: 13

Country : India

gowrishankar posted @ 2013-08-15 8:09 PM

 How did you come to know about Indian Sudoku Championship? I am a regular visitor at LMI forum.
 Did the Instructions Booklet (IB) provide enough information about participating in ISC? Yes, mostly.
 Did you understand the Sudoku variations rules and examples from the IB? I understood most of them.
 Did you find enough easy Sudokus to solve during the championship? No, there were really few easy puzzles.
 Did you find enough easy / familiar variations to solve during the championship? No, there were really few familiar types.
 After your experience in ISC, are you going to participate in future championshiops or contests at LMI? Most likely


@ 2013-08-16 12:19 AM (#12337 - in reply to #12325) (#12337) Top

motris



Posts: 199
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Country : United States

motris posted @ 2013-08-16 12:19 AM

Fred76 - 2013-08-14 3:39 PM
I could not help noticing the lack of symmetry of the second classic, with 2 digits added on the bottom left. I think it was possible to make a symmetric one with that pattern, without adding the 2 digits, but it's really a tiny detail).
Fred


The second classic has diagonal reflective symmetry which is one I certainly count (others may only like spinning their puzzles in place). I was indeed going for a clover leaf with an all even middle and an all odd outside but there are no possible puzzles of this form without another even digit somewhere. Making a stem for the clover was my compromise, along one diagonal axis, as that then kept the very naked single start I had set-up fully preserved.

Edited by motris 2013-08-16 12:24 AM
@ 2013-08-16 12:54 AM (#12338 - in reply to #12337) (#12338) Top

Fred76




Posts: 337
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Country : Switzerland

Fred76 posted @ 2013-08-16 12:54 AM

motris - 2013-08-16 12:19 AM

Fred76 - 2013-08-14 3:39 PM
I could not help noticing the lack of symmetry of the second classic, with 2 digits added on the bottom left. I think it was possible to make a symmetric one with that pattern, without adding the 2 digits, but it's really a tiny detail).
Fred


The second classic has diagonal reflective symmetry which is one I certainly count (others may only like spinning their puzzles in place). I was indeed going for a clover leaf with an all even middle and an all odd outside but there are no possible puzzles of this form without another even digit somewhere. Making a stem for the clover was my compromise, along one diagonal axis, as that then kept the very naked single start I had set-up fully preserved.


You are right, it has a diagonal symmetry. Also, I didn't notice the even-odd "game" on this puzzle. Thanks for the explanation

Fred
@ 2013-08-16 11:37 PM (#12345 - in reply to #12325) (#12345) Top

debmohanty




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Country : India

debmohanty posted @ 2013-08-16 11:37 PM

Fred76 - 2013-08-15 4:39 AM

I even didn't notice the theme of the 6*6 irregulars while solving. Nice construction !
That (the theme) is also the reason why the 6X6 irregular ones turned out to be tougher than usual, as noted by some participants. Thankfully, they were not in the first page of the pdf.
@ 2013-09-13 7:28 PM (#12685 - in reply to #11781) (#12685) Top

vijaya_rajan



Posts: 22
20
Country : India

vijaya_rajan posted @ 2013-09-13 7:28 PM

Sorry to harp back to ISC challenge, but I need some help in solving smashed sums, deficit and shifted sudokus. I am unable to go beyond a point in deficit whereas in the other two, I don't even know where to start. I also need help with the 6x6 of which I could solve only two. The last one in the left side column and all three in the right side column have proved difficult for me.
@ 2013-09-13 8:31 PM (#12686 - in reply to #12685) (#12686) Top

debmohanty




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Country : India

debmohanty posted @ 2013-09-13 8:31 PM

vijaya_rajan - 2013-09-13 7:28 PM

Sorry to harp back to ISC challenge, but I need some help in solving smashed sums, deficit and shifted sudokus. I am unable to go beyond a point in deficit whereas in the other two, I don't even know where to start. I also need help with the 6x6 of which I could solve only two. The last one in the left side column and all three in the right side column have proved difficult for me.

Here are the steps for Top Right 6X6 Sudoku.



In the last image here, I use something called "Placeholder". It can be explained like this : Lets say R1C5=X. So X can be 2 or 3 or 5. Then R2C3 = X, and then R5C1=X. Now where does X go in box6, and what will be its value?

Placeholder can be used to solve some of the other 6X6 that you have found difficult. I will be posting steps for them, but it will take a while (to create the images.)
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