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Administrator
   
Country : India | |
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Administrator
Country : India | April Contest has started• Puzzle booklet (without password ) is now available. • This thread will remain open (unrestricted ) throughout the contest - which will allow players to ask questions about the puzzles. • The red warnings for optimizer puzzles are not always correct. You can ignore them, if you are fairly sure that your answer keys are in correct format; • Potential Score page - http://logicmastersindia.com/2015/04Contest/score.asp
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Administrator
Country : India | Some notes about April ContestPlease note this contest will have a slightly different format than regular LMI tests.
Key differences from regular LMI tests:
• There is no IB (i.e. no Instructions Booklet). If you have any questions about any puzzle, please ask here.
• The PB (Puzzle Booklet) does have any password
• You can download the pdf and start solving. Login at the contest page to start submitting.
• There is no time limit. You can submit until the contest ends.
• There are 3 optimizer puzzles. Other puzzles will hard (compared to regular LMI tests)
• Same scores will have same rank (i.e. early submissions do not count towards rank)
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Jacoblance
Posts: 9
Country : United States | Why is April Contest not counted for Puzzle Ratings? |
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chaotic_iak
Posts: 241
Country : Indonesia | This is an annual contest. Forsmarts annual contests, and if I recall correctly Fillomino-Fillia 2, weren't counted for Puzzle Ratings, either. |
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Nikola
Posts: 103
Country : Serbia | Nikola posted @ 2015-04-03 4:34 PM Very nice stuffs again! I have two questions:
4. MIRRORED SUDOKUS
I don't understand the rule: "All cells with digits which, after mirroring, become the same or other digits (in any of the other grids) are marked by green". Why in the solution of the example not all the same mirrored digits are marked by green? And how to solve an example when we have only one given digit? Also a thinking why digital shapes are given? Must be I miss something in this puzzle.
11. NUMBERED SNAKE
There is no limitation about sequence of the numbers for this puzzle. I suppose we need to place the numbers strictly from 1 to 45 in creasing order. Am I right? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Nikola - 2015-04-03 4:34 PM
Very nice stuffs again! I have two questions:
4. MIRRORED SUDOKUS
I don't understand the rule: "All cells with digits which, after mirroring, become the same or other digits (in any of the other grids) are marked by green". Why in the solution of the example not all the same mirrored digits are marked by green? And how to solve an example when we have only one given digit? Also a thinking why digital shapes are given? Must be I miss something in this puzzle.
11. NUMBERED SNAKE
There is no limitation about sequence of the numbers for this puzzle. I suppose we need to place the numbers strictly from 1 to 45 in creasing order. Am I right?
Hi Nikola,
4. In the example only 0 and 1 can be reflected itself in each of four grids. The number 3 may be mirrored in 3 or letter E. Therefore, one given digit enough to solve an example.
11. You are right.
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rakesh_rai
Posts: 774
Country : India | Riad Khanmagomedov - 2015-04-03 6:38 PM
Nikola - 2015-04-03 4:34 PM
4. MIRRORED SUDOKUS
I don't understand the rule: "All cells with digits which, after mirroring, become the same or other digits (in any of the other grids) are marked by green". Why in the solution of the example not all the same mirrored digits are marked by green? And how to solve an example when we have only one given digit? Also a thinking why digital shapes are given? Must be I miss something in this puzzle.
4. In the example only 0 and 1 can be reflected itself in each of four grids. The number 3 may be mirrored in 3 or letter E. Therefore, one given digit enough to solve an example. (Adding to the explanation given by Riad already )
Any cell will have three possible "mirror" cells, one in each quadrant. If any one or more of these three represent a valid number (0 to 5, digital shape ), then the original cell will be shaded green. If not, it will be shaded white. Edited by rakesh_rai 2015-04-03 8:49 PM
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Realshaggy
Posts: 69
Country : Germany | Deleted something really stupid.
Edited by Realshaggy 2015-04-04 1:49 AM
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Nikola
Posts: 103
Country : Serbia | Nikola posted @ 2015-04-04 2:37 AM Clear now, thanks. Yes, "reflected" is key word and the rules always say "mirrored". I don't know why those two words are not synonyms in my mind.  |
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forcolin
Posts: 172
Country : ITALY | Hi
my printer does not recognize the internal grid lines of the TOOLS. something similar happened at the beginning of the marathon with the fillomino diagram. the inside of the diagram is completely blank. can somebody fix it?
Thanks
stefano |
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Administrator
Country : India | forcolin - 2015-04-04 5:41 PM
Hi
my printer does not recognize the internal grid lines of the TOOLS. something similar happened at the beginning of the marathon with the fillomino diagram. the inside of the diagram is completely blank. can somebody fix it?
Thanks
stefano
Hi Stefano,
Riad made this grid with solid lines. Please check. Attachments ----------------  April_Contest_2015_TOOLS.pdf (58KB - 12 downloads) |
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forcolin
Posts: 172
Country : ITALY | yes it works, thank you
sf |
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forcolin
Posts: 172
Country : ITALY | re. puzzle 10. can additional letters be included in the sequence, example APRI5L CONTEST 2015 AT LMTI? |
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Nikola
Posts: 103
Country : Serbia | Nikola posted @ 2015-04-05 3:54 PM To follow up on the previous question. Is it allowed to make the crossings on the cells with the letters? In that case, if the letter has remained out of the loop, is it an empty cell? |
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Puzlifouk
Posts: 67
Country : France | Hello. Very pleasant contest : I like !
For puzzle 11, the answer is controlled as "- or number (10 times)" but the grid is 11x11 : so I suppose it would be "- or number (11 times)" ? |
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Administrator
Country : India | Puzlifouk - 2015-04-05 8:49 PM
Hello. Very pleasant contest : I like !
For puzzle 11, the answer is controlled as "- or number (10 times)" but the grid is 11x11 : so I suppose it would be "- or number (11 times)" ? You are right. Fixed the warning. |
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Puzlifouk
Posts: 67
Country : France | Nikola - 2015-04-05 10:54 AM
To follow up on the previous question. Is it allowed to make the crossings on the cells with the letters? In that case, if the letter has remained out of the loop, is it an empty cell?
I have the same question. For example, along the line we must go through two letters 'A' : is it possible to go through the same letter 'A' 2 times (by crossing ), and to avoid the second letter 'A' ? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | forcolin - 2015-04-05 2:39 PM
re. puzzle 10. can additional letters be included in the sequence, example APRI5L CONTEST 2015 AT LMTI?
No Stefano,
This is unacceptable. |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Nikola - 2015-04-05 3:54 PM
To follow up on the previous question. Is it allowed to make the crossings on the cells with the letters? In that case, if the letter has remained out of the loop, is it an empty cell?
The line should pass through each letter. The letter can not be remained out of the loop. |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Puzlifouk - 2015-04-05 9:22 PM
Nikola - 2015-04-05 10:54 AM
To follow up on the previous question. Is it allowed to make the crossings on the cells with the letters? In that case, if the letter has remained out of the loop, is it an empty cell?
I have the same question. For example, along the line we must go through two letters 'A' : is it possible to go through the same letter 'A' 2 times (by crossing ), and to avoid the second letter 'A' ?
Perhaps such conditions would make the puzzle more difficult. But I assumed that the line goes through all the characters. |
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auroux
Posts: 145
Country : France | auroux posted @ 2015-04-06 6:25 AM In the answering form, for puzzle 11, I think the answer keys need to be of length 11 not 10 as claimed by the format verification code (which warns me that my answer keys are not of the right length).
(In general, many of the answer keys seem trickier than necessary -- really, counting the C's? diagonals that go in the opposite of the usual direction? --, but it's too late to change them). |
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Riad Khanmagomedov
Posts: 231
Country : Russia | auroux - 2015-04-06 6:25 AM
In general, many of the answer keys seem trickier than necessary -- really, counting the C's? diagonals that go in the opposite of the usual direction? --, but it's too late to change them.
I'm a pronounced left-handed. Maybe because I offered unusual diagonals? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | About puzzle 10 (APRIL CONTEST 2015 AT LMI):
It is not necessary for the line to start at cells with A and end at cells with I. |
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Puzlifouk
Posts: 67
Country : France | Hello. New question : in Sudoku without wall, may a wall segment separate two cells of the same area ? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Puzlifouk - 2015-04-06 10:18 PM
Hello. New question : in Sudoku without wall, may a wall segment separate two cells of the same area ?
Hello, certainly not! |
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sliverbrain
Posts: 4
Country : India | #@!%^ |
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Mihalich
Posts: 26
Country : Ukraine | ????????????, ????! ??????? ?? ?????????? ???????.
4. ???????????? ??????.
????? ?????? ???????? ???????, ? ??????? ??? ??????, ????? ? ??????? ????????? ?????????? ? ???? ??? ? ?????? ?????.
1.????? ??, ??? ?????? ????? ? ??????? ?????? ???? ?? ??? ????????? ? ??????????????? ???????? ??? ??????? ?????????? ???? ? 2 ? 0, 2 ? 0 ? ?????????? ???????, ?? ?? ????????????. ????? ?? ? ???????????? ???? ???? 2 ? 5 - ??? ????????? "???????" ???????????
2. ????? ????? ?? ????? ???? ? ?????????? ?? ???????? ????????, 2 ? 5 ????? ??? ????
Zdravstvujte, Riad! Spasibo za interesnye zadanija.
4. ZAZERKAL''NYE SUDOKU.
Serym cvetom otmecheny zerkala, a zeljonym vse kletki, cifry v kotoryh zerkal'no otrazhajutsja v sebja ili v drugie cifry.
1.Verno li, chto kazhdaja cifra v zeljonoj kletke HOTJa BY RAZ otrzhaetsja v sootvetstvujushhej zeljonoj? Kak primere vnutrennie ugly s 2 i 0, 2 i 0 v zerkal'nyh zeljonyh, no ne povtorjajut'sja. Mogut li v edinstvennoj pare byt' 2 i 5 - jeto schitaetsja "zeljonym" otrazheniem?
2. Kakie cifry NE MOGUT BYT'' v zerkal'nyh NE ZELJoNYH? Naprimer, 2 i 5 mogut ili net? Edited by Mihalich 2015-04-07 11:44 AM
 (Mihalich_Post18193.png)Attachments ---------------- Mihalich_Post18193.png (17KB - 5 downloads) |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Mihalich - 2015-04-07 11:40 AM
Zdravstvujte, Riad! Spasibo za interesnye zadanija.
4. ZAZERKAL''NYE SUDOKU.
Serym cvetom otmecheny zerkala, a zeljonym vse kletki, cifry v kotoryh zerkal'no otrazhajutsja v sebja ili v drugie cifry.
1.Verno li, chto kazhdaja cifra v zeljonoj kletke HOTJa BY RAZ otrzhaetsja v sootvetstvujushhej zeljonoj? Kak primere vnutrennie ugly s 2 i 0, 2 i 0 v zerkal'nyh zeljonyh, no ne povtorjajut'sja. Mogut li v edinstvennoj pare byt' 2 i 5 - jeto schitaetsja "zeljonym" otrazheniem?
2. Kakie cifry NE MOGUT BYT'' v zerkal'nyh NE ZELJoNYH? Naprimer, 2 i 5 mogut ili net?
Zdravstvujte, Vladimir!
1. Verno. Da, 2 i 5 mogut byt' v edinstvennoj pare (ne v diagonal'noj, razumeetsja ).
2. Ogranichenij net: v belyh kletkah mogut vstretit'sja ljubye cifry, v tom chisle 2 i 5. |
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Mihalich
Posts: 26
Country : Ukraine | Vyhodit, 2 i 5 - jeto i zerkal'noe otrazhenie i net odnovremenno? ili tol'ko po gorizontali(vertikali)?
Mozhet li 2 byt' v zeljonoj kletke pri otrazhenii vpravo ili vniz ili tol'ko po diagonali?
3 mozhet byt' v zeljonoj kletke TOL''KO pri gorizontal'nom zerkale (vniz-vverh)? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Mihalich - 2015-04-07 2:37 PM
Vyhodit, 2 i 5 - jeto i zerkal'noe otrazhenie i net odnovremenno? ili tol'ko po gorizontali(vertikali)?
Mozhet li 2 byt' v zeljonoj kletke pri otrazhenii vpravo ili vniz ili tol'ko po diagonali?
3 mozhet byt' v zeljonoj kletke TOL''KO pri gorizontal'nom zerkale (vniz-vverh)?
2 zerkal'no otrazhaetsja v 5, esli rech' o sosednih po gorizontali ili vertali poljah. V sebja 2 otrazhaetsja "tol'ko po diagonali".
S 3 vsjo verno. |
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Mihalich
Posts: 26
Country : Ukraine | 4 ne mozhet byt' v zeljonoj kletke - neotrazimaja zerkal'no? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Mihalich - 2015-04-07 9:01 PM
4 ne mozhet byt' v zeljonoj kletke - neotrazimaja zerkal'no?
Ne mozhet. |
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Yajendra
Posts: 18
Country : India | I am not able to solve even a single puzzle :( |
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rakesh_rai
Posts: 774
Country : India | Yajendra - 2015-04-09 1:18 PM
I am not able to solve even a single puzzle :(
Read the rules carefully, multiple times.
Try to find openings, applying the rules.
Try to think "If .... then what happens, is any rule violated."
And if you are stuck, save your work and come back later.
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Eisbaer
Posts: 4
Country : The Netherlands | Eisbaer posted @ 2015-04-09 5:11 PM I have a little question about puzzle 10...
In the requested sentence there are two "I' 's and one time the digit 1. But it looks like there are three same characters "I" (or 1?) in the grid? Could all three characters be used for the digit 1? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Eisbaer - 2015-04-09 5:11 PM
I have a little question about puzzle 10...
In the requested sentence there are two "I' 's and one time the digit 1. But it looks like there are three same characters "I" (or 1?) in the grid? Could all three characters be used for the digit 1?
1 can be any of the three "I". Two other "I" will be letters. |
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auroux
Posts: 145
Country : France | auroux posted @ 2015-04-09 10:25 PM Just to make sure -- in "Tools", the answer key only describes whether the edges of the grid along the given row or column are occupied (and if so by what tool) or not, correct?
More precisely: what would be the answer key for the second row in the example? Am I right that it would be -----HH---- ? (i.e. the edges that are "inside" the ladder are unoccupied and so remain "-" in the answer key, even though there is a ladder) ?
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Riad Khanmagomedov
Posts: 231
Country : Russia | auroux - 2015-04-09 10:25 PM
Just to make sure -- in "Tools", the answer key only describes whether the edges of the grid along the given row or column are occupied (and if so by what tool) or not, correct?
More precisely: what would be the answer key for the second row in the example? Am I right that it would be -----HH---- ? (i.e. the edges that are "inside" the ladder are unoccupied and so remain "-" in the answer key, even though there is a ladder) ?
Yes, for the second row in the example the answer is recorded correctly. |
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kiwijam
Posts: 186
Country : New Zealand | kiwijam posted @ 2015-04-11 8:19 AM Just a small confirmation for #10 (April Contest 2015 At LMI):
At the points of intersection, the line path must always continue straight ahead, it cannot have 2 turns (reflecting off each other)? |
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Riad Khanmagomedov
Posts: 231
Country : Russia | kiwijam - 2015-04-11 8:19 AM
Just a small confirmation for #10 (April Contest 2015 At LMI):
At the points of intersection, the line path must always continue straight ahead, it cannot have 2 turns (reflecting off each other)?
The line path must always continue straight. |
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Mihalich
Posts: 26
Country : Ukraine | V zadanii 10 v forme dlja otvetov ukazyvaetsja na moju oshibku pri opisanii marshruta. Posle ukazanija poslednego ugla nichego ne nuzhno ukazyvat'? Ved' mozhet byt' nejasno napravlenie i dlina otrezka! |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Mihalich - 2015-04-11 2:53 PM
V zadanii 10 v forme dlja otvetov ukazyvaetsja na moju oshibku pri opisanii marshruta. Posle ukazanija poslednego ugla nichego ne nuzhno ukazyvat'? Ved' mozhet byt' nejasno napravlenie i dlina otrezka!
Ne nuzhno, ja dorisuju hvostik linii. |
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Administrator
Country : India | Optimizer submissions
Link : http://logicmastersindia.com/lmitests/dl.asp?attachmentid=513
Like every year, we have prepared images for optimizer submissions. Couple of notes
1. In Puzzle 10 (LMI Contest 2015 at LMI ) we had to manually determine the end point of the line in several cases. Please check if your submission is different than what is intended.
2. Riad is still solving all the Puzzle 12 (ROMAN COOL-L-L ) submissions. If you notice any grid is invalid, please post here.
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kiwijam
Posts: 186
Country : New Zealand | kiwijam posted @ 2015-04-12 11:02 AM Player3 grid has 8 solutions. It has six rows of "LOOLOOLOO", and 3 rows of "CLLCLLCL?", where "?" can be C or L. |
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debmohanty
Country : India | Thanks James. What about Player13? |
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kiwijam
Posts: 186
Country : New Zealand | kiwijam posted @ 2015-04-12 2:31 PM The Player13 grid is interesting.
The only way to get four adjacent 200s is with:
LOLOOLOOL
OOLLLOOLO
OLOOLLLOO
LOOLOOLOL
or its mirror image. (this is not simple to prove!)
So that fixes the top 4 rows, and if the bottom 4 are the same pattern then the solution must be:
LOLOOLOOL
OOLLLOOLO
OLOOLLLOO
LOOLOOLOL
LCLLCLLCL
LOLOOLOOL
OOLLLOOLO
OLOOLLLOO
LOOLOOLOL
If the mirror image option is used below then no solution is possible.
So the Player13 grid is fine.
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Yajendra
Posts: 18
Country : India | In puzzle 10, minimizing P+2E. I thought E means the number of empty cells through which the thread moves... |
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Riad Khanmagomedov
Posts: 231
Country : Russia | kiwijam - 2015-04-12 11:02 AM
Player3 grid has 8 solutions. It has six rows of "LOOLOOLOO", and 3 rows of "CLLCLLCL?", where "?" can be C or L.
I saw it more April 10. Do not have a unique solution puzzles of other participants. I ask everyone to look at the preliminary results and report if something disagree.
I congratulate James, Tomoaki and my Ukrainian friend Sergey with a victory in the April contest! |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Yajendra - 2015-04-12 2:42 PM
In puzzle 10, minimizing P+2E. I thought E means the number of empty cells through which the thread moves...
I counted the puzzle10 is easiest to understand. In any case, thank you for your participation!
I thank everyone who participated in the contest and Deb, Prasanna and Rakesh for support! |
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flk
Posts: 23
Country : Australia | flk posted @ 2015-04-12 5:37 PM Thanks Riad for many wonderful puzzles. These were certainly very difficult and had me frustrated for many hours! With so many unique rules, it was easy to make a careless mistake early on in a puzzle, not be sure where you had erred, and have to restart. But, it was certainly fun and had me focused intently for a long time. Unfortunately ran out of time to tackle the last optimiser!
On the results: it looks like I did not receive any points for my COOL optimiser, and Christian may have been given the points in my place. Thanks again. |
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Puzlifouk
Posts: 67
Country : France | kiwijam - 2015-04-12 6:02 AM
Player3 grid has 8 solutions. It has six rows of "LOOLOOLOO", and 3 rows of "CLLCLLCL?", where "?" can be C or L.
Unfortunatly for me, I was Player3, and I made the wrong choice : (
I had also the idea to send your solution (the good one ) but I thought mine was easier to check, and I checked mine... too quickly.
Because of many players found the best solution last year on Roman OX, I thought the same players will find easily Roman COOL, which is a kind of transposition... And because of this transposition, I was early convinced that 1200 was the best score to reach.
Definitely, I was too lazy this time : for puzzle 10, I have the same answer than Hugo, and didn't saw your answer, which is so similar : ( (
Congratulations to all, and espacially to Riad for the conception and to James for his performance ! |
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Riad Khanmagomedov
Posts: 231
Country : Russia | flk - 2015-04-12 5:37 PM
Thanks Riad for many wonderful puzzles. These were certainly very difficult and had me frustrated for many hours! With so many unique rules, it was easy to make a careless mistake early on in a puzzle, not be sure where you had erred, and have to restart. But, it was certainly fun and had me focused intently for a long time. Unfortunately ran out of time to tackle the last optimiser!
On the results: it looks like I did not receive any points for my COOL optimiser, and Christian may have been given the points in my place. Thanks again.
I saw that in your puzzle is not the only 1 solution. I noticed that if you moved down the 150 in the middle row, then the solution would be the only one. I cooked your puzzle in PDF-file with your answer. Alas, the answer was the same as in the file. I wish you good luck in the next contests! |
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Riad Khanmagomedov
Posts: 231
Country : Russia | Puzlifouk - 2015-04-12 5:50 PM
Unfortunatly for me, I was Player3, and I made the wrong choice :(
I had also the idea to send your solution (the good one) but I thought mine was easier to check, and I checked mine... too quickly.
Because of many players found the best solution last year on Roman OX, I thought the same players will find easily Roman COOL, which is a kind of transposition... And because of this transposition, I was early convinced that 1200 was the best score to reach.
Definitely, I was too lazy this time : for puzzle 10, I have the same answer than Hugo, and didn't saw your answer, which is so similar :((
Congratulations to all, and espacially to Riad for the conception and to James for his performance !
Thank you Puzlifouk,
Your puzzle I checked the day before the end of the contest. I thought that you can still move the 150 to the right and correct the last day of the contest. But your idea really was good.
See you in September, I have already prepared a contest of new puzzles! |
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flk
Posts: 23
Country : Australia | flk posted @ 2015-04-12 6:22 PM Hi Riad, not sure I understand. I submitted: 1800#150,150,-,150,-,150,-,150,150,150,150,-,150,150,-,-,150,150#-#-#-#-#-#-#-#-#- (Player 8) and pretty confident it has a unique solution! |
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Administrator
Country : India | A new pdf has been uploaded with actual player names. |
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Riad Khanmagomedov
Posts: 231
Country : Russia | flk - 2015-04-12 6:22 PM
Hi Riad, not sure I understand. I submitted: 1800#150,150,-,150,-,150,-,150,150,150,150,-,150,150,-,-,150,150#-#-#-#-#-#-#-#-#- (Player 8) and pretty confident it has a unique solution!
Hi Orion, sorry, now I see that you are right. I added you points. |
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kiwijam
Posts: 186
Country : New Zealand | kiwijam posted @ 2015-04-13 8:32 AM Thank you Riad for another great contest.
The puzzles are hard, but we have a week so that is not a problem. It is nice to sit down and solve a puzzle without time pressure.
I kept making small mistakes in the Mirrored Sudokus, I solved it on my 3rd try.
For Optimizer #10 I found 6 solutions with 9 points, and there are 2 more in the pdf. I think this was just hard to find any solution, especially in the bottom-right corner. I expected many people would find 9 points.
But I thought Optimizer #11 was the hardest. On the last day I submitted a 2225 solution, which is the best when going around the edge. Later that night I tried the "S" shape and found the 1818 solution. I thought this would be very hard for people to find, but 14 people did! Great work by all of them. This was my favourite puzzle.
For Optimizer #12 I remembered last year's Roman Ox, which I did not do well with. First I found a symmetrical "tartan" solution, with 6 clues on the top and side (150,-,150,150,-,150,150,-,150). Then I removed one clue at a time, checking for uniqueness, until only 8 clues remained. This surprised me, I thought 10 clues would be minimal. Also surprised that less people tried this.
I looked at solutions with three adjacent clues (e.g. 150,250,200) but these were too expensive for not enough information.
Well done to Tomoaki and Sergey also.
Every year I feel very lucky to win this, maybe next year my luck will finish :)
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ibon
Posts: 4
Country : Spain | ibon posted @ 2015-04-13 11:35 AM Thank you Riad for the very nice contest, fortunatly we had more than a week to solve the puzzles. All of them hard but funny and challenging to solve.
The best puzzles for me were tools and borderless ABCD. And the optimizers April contest and snake were also very funny to solve.
Congratulations to all the participants, specially to kiwijam!
Already waiting for next year's contest! |
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Riad Khanmagomedov
Posts: 231
Country : Russia | kiwijam - 2015-04-13 8:32 AM
Thank you Riad for another great contest.
The puzzles are hard, but we have a week so that is not a problem. It is nice to sit down and solve a puzzle without time pressure.
I kept making small mistakes in the Mirrored Sudokus, I solved it on my 3rd try.
For Optimizer #10 I found 6 solutions with 9 points, and there are 2 more in the pdf. I think this was just hard to find any solution, especially in the bottom-right corner. I expected many people would find 9 points.
But I thought Optimizer #11 was the hardest. On the last day I submitted a 2225 solution, which is the best when going around the edge. Later that night I tried the "S" shape and found the 1818 solution. I thought this would be very hard for people to find, but 14 people did! Great work by all of them. This was my favourite puzzle.
For Optimizer #12 I remembered last year's Roman Ox, which I did not do well with. First I found a symmetrical "tartan" solution, with 6 clues on the top and side (150,-,150,150,-,150,150,-,150). Then I removed one clue at a time, checking for uniqueness, until only 8 clues remained. This surprised me, I thought 10 clues would be minimal. Also surprised that less people tried this.
I looked at solutions with three adjacent clues (e.g. 150,250,200) but these were too expensive for not enough information.
Well done to Tomoaki and Sergey also.
Every year I feel very lucky to win this, maybe next year my luck will finish :)
Thank you James, your comments are always interesting and informative!
I assumed that the optimizer 10 will be easy to find the best solution. I knew that the best solution is defined in different ways. So I appreciated the best solution in 10 points, and the subsequent 7. I wanted that new players could solve several puzzles. Because I do not cut the duration of the contest, knowing full well that strong solvers enough 2-3 days. |
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Riad Khanmagomedov
Posts: 231
Country : Russia | ibon - 2015-04-13 11:35 AM
Thank you Riad for the very nice contest, fortunatly we had more than a week to solve the puzzles. All of them hard but funny and challenging to solve.
The best puzzles for me were tools and borderless ABCD. And the optimizers April contest and snake were also very funny to solve.
Congratulations to all the participants, specially to kiwijam!
Already waiting for next year's contest!
Thank you Ibon. May contact the administrator to determine the best puzzle?
Deb, is it possible to invite participants to rank the puzzles? |
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Administrator
Country : India | |
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Puzlifouk
Posts: 67
Country : France | Hi Riad,
You talked about a new set of puzzles in September... May we know some more ? There will be before of after Puzzle Ramayan ? At the beginning or at the end of September ?
As you can imagine, I am eager to see these puzzles... |
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Administrator
Country : India | Puzlifouk - 2015-08-15 2:48 AM
Hi Riad,
You talked about a new set of puzzles in September... May we know some more ? There will be before of after Puzzle Ramayan ? At the beginning or at the end of September ?
As you can imagine, I am eager to see these puzzles...
http://logicmastersindia.com/2015/09S/ |
