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Puzzle Zodiac (09th - 15th Oct) Score Discuss

Nikoli Selection - LMI October Puzzle Test 1
   LMI Tests -> Monthly Sudoku and Puzzle Tests58 posts • Page 2 of 3 • 1 2 3
Akuma21
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-09 9:38 PM (#2108 - in reply to #2014) (#2108) Top




Posts: 22
20
Location: Italy
A good set of puzzle, i like it! I have done only a stupid error in hashi'answer key; i have entered the number of all double bridges.
Good luck to everyone!
Deyan
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-09 11:15 PM (#2109 - in reply to #2014) (#2109) Top




Posts: 7

Location: Bulgaria
I had the bad luck to solve the wrong PDF.

This is what I found:
#1 Numberlink - multiple solutions
When I realized it, I just found a solution that is using all cells and got points
#5 Akari - 4 solutions
For luck, all solutions have the same answer, so no problems with it
#12 Nurikabe - wrong image
I spent a lot of time on it. After time limit I solved the bigger Nurikabe for about 1/3 of the time I spent on this.
Actually, it's very easily fixable: just change '4' to '3' at R5C10
#16 LITS
I also spent some time until found it's wrong (one small line, but a big difference)
detuned
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-09 11:53 PM (#2110 - in reply to #2109) (#2110) Top




Posts: 152
1002020
Location: United Kingdom
For anyone wondering what the big heyawake should have looked like:

Puzzle: http://www.warwick.ac.uk/~marear/36x20_heyawake.png
(and solution: http://www.warwick.ac.uk/~marear/36x20_heyawake_solution.png)

Please accept this as something of an apology :)
debmohanty
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 1:06 AM (#2111 - in reply to #2109) (#2111) Top



1000500100100100202020
Location: India
Deyan - 2010-10-09 11:15 PM

I had the bad luck to solve the wrong PDF.
#5 Akari - 4 solutions
For luck, all solutions have the same answer, so no problems with it
Sorry again about the problems.
#5 Akari has one solution. Please check your email.
Deyan
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 1:57 AM (#2112 - in reply to #2111) (#2112) Top




Posts: 7

Location: Bulgaria
debmohanty - 2010-10-09 9:06 PM

Deyan - 2010-10-09 11:15 PM

I had the bad luck to solve the wrong PDF.
#5 Akari - 4 solutions
For luck, all solutions have the same answer, so no problems with it
Sorry again about the problems.
#5 Akari has one solution. Please check your email.


Oops
You are right. I should change my notation for this puzzle.
StGeorge
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 4:36 AM (#2113 - in reply to #2014) (#2113) Top




Posts: 11

Location: Bulgaria
The heyawake marathon was wrong? I didn't notice. It did take me quite a while to solve it - about 75 minutes - but I didn't see any mistakes. I'm sure I can easily be missing something and the correct version that Tom posted looks quite a bit different. Can someone tell me what the mistake is? Or is it that the one in the booklet is still a valid heyawake, just not the one that was intended? That would be a weird happenstance :)
detuned
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 5:37 AM (#2114 - in reply to #2113) (#2114) Top




Posts: 152
1002020
Location: United Kingdom
I didn't notice either - until it was too late.

There was a thing quite early on in the solve where you have a choice between either entirely surrounding an empty square with shaded squares, or else leaving 3 rooms empty in a row. The latter option was apparently quite subtle as I must have passed over it at least four or five times. Either that, or I'm an idiot. The new version is basically a fiddle to change as little of the solving experience (after wrongly assuming the 3 empty rooms in a row) as possible - I'd estimate about 80% of the puzzle solves the same.

Edited by detuned 2010-10-10 5:39 AM
motris
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 10:24 AM (#2115 - in reply to #2014) (#2115) Top




Posts: 199
10020202020
Location: USA
I obviously had the benefit of the "improved" test, but that won't keep me from my typical counting error (on the highest possible valued puzzle to boot). Got through all the solvable puzzles though. I think the marathon Kakuro was guilty of being too cute (not a good thing in a competition), but otherwise a lot of very fun puzzles to solve. Thanks for the puzzles Tom.

Edited by motris 2010-10-10 10:25 AM
StGeorge
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 2:40 PM (#2117 - in reply to #2014) (#2117) Top




Posts: 11

Location: Bulgaria
Yeah, I found the spot and fixed it up with the new image, it should be ok now :)

By the way, the masyu marathon was pretty fun, I had a couple of warm, fuzzy "Oooh" moments solving it :P
forcolin
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 2:54 PM (#2118 - in reply to #2014) (#2118) Top





Posts: 165
100202020
Location: Italy
I made it too although my PC froze as soon as I copy/pasted the pw. Had to reset and reboot and lost 5-6 minutes. Therefore I guess this time motris will beat me

Nice set of puzzles, although I did not always find a straight relationship between the points awarded and the difficulty level. Thanks Tom, better luck for the future

stefano
ps: how do I rate the puzzles?

Edited by forcolin 2010-10-10 2:55 PM
rajeshk
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 5:29 PM (#2119 - in reply to #2014) (#2119) Top


WSPC Organizer

Posts: 507
500
Location: India
Nice set of puzzles. Made one error while submitting the answer to lost 100 points. Do take care while submitting your answers.


debmohanty
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 6:38 PM (#2124 - in reply to #2118) (#2124) Top



1000500100100100202020
Location: India
forcolin - 2010-10-10 2:54 PM
ps: how do I rate the puzzles?

In the submission page, below each puzzle name there are 10 dots.
The left-most dot is for 1-star and the right-most dot is for 10-stars. You can move your mouse over the dot to see.
Gotroch
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 9:34 PM (#2126 - in reply to #2102) (#2126) Top




Posts: 79
202020
Location: Czech Republic
amitsowani - 2010-10-09 6:03 PM

Reposting to make sure that everyone has read this post:

1) The LITS image in the pdf is incorrect. We have uploaded an updated pdf. So all participants who are yet to participate please download the updated version.
2) The Nurikabe 10X10 puzzle is incorrect.
3) The Numberlinks puzzle has multiple solutions.
4) The Heyawake marathon puzzle is incorrect.

Password for marathon pdf is different than main puzzle pdf. Both passwords will be displayed after you start the test


So for the Numberlink puzzle it means that any correct solution will be accepted and points will be awarded?
Or is that puzzle out of the competition like the incorrect ones?
DreamRose311
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 11:49 PM (#2127 - in reply to #2014) (#2127) Top




Posts: 24
20
Location: USA
Since you uploaded a new test booklet with a corrected LITS, are you going to somehow adjust the scores of those who completed the test before the new PDF was uploaded?
Gareth
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-10 11:56 PM (#2128 - in reply to #2014) (#2128) Top




Posts: 17

Location: United Kingdom
If you start the competition now, should you just skip the broken puzzles or are there still points available for these anyway?
amitsowani
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 12:04 AM (#2129 - in reply to #2128) (#2129) Top



PR 2020 (Casual and Word) Author

Posts: 339
10010010020
Location: India
We will consider points only for the updated puzzle booklet.
Points will be adjusted for all participants who participated in the test before the updated booklet was made available.

debmohanty
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 6:40 AM (#2130 - in reply to #2129) (#2130) Top



1000500100100100202020
Location: India
Results are published -
http://logicmastersindia.com/M201010P1/score.asp

We've followed a simple method
Nurikabe = 0 points for all
NumberLinks = 20 if player solved with old pdf and answer startsed with 1114, 0 if player solved with new pdf

This may not be the fairest way, but I guess there is no fair way to compute how much time a player spent on broken puzzle to compensate them for that.

We've disabled the ranks this time - you can sort by Points though.

Thank you everyone for participating.
And we (debmohanty, amitsowani, detuned) apologize again for the mistakes which could have been avoided.
debmohanty
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 8:21 AM (#2131 - in reply to #2014) (#2131) Top



1000500100100100202020
Location: India
There were 184 participants - 151 of whom got non-zero scores.

Here are some stats :
of countries - 35.
Top 3 (Based on #of non-zero entries)
Ind - 21
Japan - 18
USA - 16

Beginning of last week there were many new users registering from Japan that at one point I was thinking there will be more participants than Japan than India.
But Japan has highest Avg Score "754", and it won't be difficult to imagine how famous Nikoli is there.

debmohanty
Subject: RE: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 1:26 PM (#2141 - in reply to #2014) (#2141) Top



1000500100100100202020
Location: India
Please provide feedback about the puzzles.
If anyone needs hints / steps to solve any puzzles, please don't hesitate to post here.

From the score page, it looks LITS is the least solved puzzle (okay, after the new pdf is uploaded)
No prizes for guessing the most solved puzzle - yes it is Sudoku!
P18 - Slitherlink was most incorrectly entered puzzle.
keshava.hs
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 2:30 PM (#2142 - in reply to #2014) (#2142) Top




Posts: 10

Location: India
Hi Organizers,

first if all hats off for preparing such a wonderful puzzle set.

I have one doubt regaring the MASYU, It also has a multiple answers.

please tell me how can post it, so that you can correct me if i am wrong.

awaiting for the next test.

3 Cheers,
Keshav

debmohanty
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 5:26 PM (#2146 - in reply to #2142) (#2146) Top



1000500100100100202020
Location: India
@Keshav : I assume you are talking about P06 Masyu, because that is marked as 0 for you. We are absolutely certain that the P06 Masyu is correct and has only one solution.
You can upload your other solution (in image format) in this forum.
keshava.hs
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-11 9:52 PM (#2153 - in reply to #2014) (#2153) Top




Posts: 10

Location: India
Hi,

I am extremely sorry, misunderstud the rule, i just read it should take 90 degree turn in Black circle and should not turn in white circle.

Thanks a lot for your reply.

Best Regards,
Keshav
StGeorge
Subject: RE: Nikoli Selection - Announcements @ 2010-10-12 12:01 AM (#2156 - in reply to #2082) (#2156) Top




Posts: 11

Location: Bulgaria
debmohanty - 2010-10-08 9:01 AM

Announcements

1. For HEYAWAKE in main section -
The answer key will be different that what it is specified in the IB

New Answer key: Enter the number of shaded cells in the 3th row, followed by the number of shaded cells in the 3rd column.

For the example the answer is 0,2

[...]



This post sort of tripped me up. Apparently, it was not the 3rd row and column but the ones specified in the PB. I guess I must have misunderstood, I actually had the correct answer until I noticed the huge red announcement in the sidebar. :D Oh well.
Yuhei Kusui
Subject: Re: Nikoli Selection - LMI October Puzzle Test 1 @ 2010-10-13 2:10 PM (#2176 - in reply to #2014) (#2176) Top




Posts: 42
2020
Location: Japan
I've never solved Nikoli puzzles, and keenly realized the importance of experience.
Especially, Akari and Heyawake (which I couldn't solve within the time-limit) were thought to be tough for non-Nikolist.

Anyway, Thank you for the nice puzzles!
Yuhei Kusui
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