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Snakes - 26th - 28th Dec - Puzzle Ramayan & IPC Qualifier82 posts • Page 1 of 4 • 1 2 3 4
@ 2015-12-22 7:55 PM (#20329 - in reply to #20267) (#20329) Top

Swagatam



Posts: 45
2020
Country : India

Swagatam posted @ 2015-12-22 7:55 PM

Could anyone please suggest me how to start and proceed for 'Horse snake' and 'Summed snake'?
In the given example of 'Horse snake' on IB I only can find the positions of the Knight capturing cells. Can't proceed after that. And, can the numbered cells be a part of a snake?
@ 2015-12-22 8:41 PM (#20330 - in reply to #20329) (#20330) Top

ashaash11ash



Posts: 54
2020
Country : India

ashaash11ash posted @ 2015-12-22 8:41 PM

Swagatam - 2015-12-22 7:55 PM

Could anyone please suggest me how to start and proceed for 'Horse snake' and 'Summed snake'?
In the given example of 'Horse snake' on IB I only can find the positions of the Knight capturing cells. Can't proceed after that. And, can the numbered cells be a part of a snake?


horse snake i have attached a PDF for you to proceed. and for the sum snake. the numbers inside the grid is head and tail of the snake. 1 is the starting point and 21 is the end point indicating the length. the numbers outside indicates the total sum of the snake cells for the particular row it indicates if you draw from 1-21 in the grid.



Attachments
----------------
Attachments snake.pdf (27KB - 31 downloads)
@ 2015-12-22 9:16 PM (#20331 - in reply to #20319) (#20331) Top

ashaash11ash



Posts: 54
2020
Country : India

ashaash11ash posted @ 2015-12-22 9:16 PM

rob - 2015-12-22 1:24 AM

For Multiple Snakes, is it really "multiple snakes of different lengths", not "multiple snakes of possibly different lengths"?


it is possibly different lengths.
@ 2015-12-23 8:43 PM (#20342 - in reply to #20331) (#20342) Top

rakesh_rai




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rakesh_rai posted @ 2015-12-23 8:43 PM

ashaash11ash - 2015-12-22 9:16 PM

rob - 2015-12-22 1:24 AM

For Multiple Snakes, is it really "multiple snakes of different lengths", not "multiple snakes of possibly different lengths"?


it is possibly different lengths.

Does that mean there could be more than two snakes with some having equal lengths?
@ 2015-12-23 10:13 PM (#20343 - in reply to #20342) (#20343) Top

ashaash11ash



Posts: 54
2020
Country : India

ashaash11ash posted @ 2015-12-23 10:13 PM

rakesh_rai - 2015-12-23 8:43 PM

ashaash11ash - 2015-12-22 9:16 PM

rob - 2015-12-22 1:24 AM

For Multiple Snakes, is it really "multiple snakes of different lengths", not "multiple snakes of possibly different lengths"?


it is possibly different lengths.

Does that mean there could be more than two snakes with some having equal lengths?

Ya there can be more than 2 snakes with same length
@ 2015-12-24 12:36 PM (#20344 - in reply to #20267) (#20344) Top

Administrator



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Country : India

Administrator posted @ 2015-12-24 12:36 PM

Updated IB - Rule for Multiple Snakes removes the statement about lengths of the altogether

>>
? Apply Snake rules; however multiple snakes are there in the grid.
? Head and tail of all snakes are given.
? Different snakes do not touch each other, even diagonally.
>>
@ 2015-12-24 12:36 PM (#20345 - in reply to #20316) (#20345) Top

mikeylyk



Posts: 16

Country : United States

mikeylyk posted @ 2015-12-24 12:36 PM

i'm at 2 years solving, and still not consistent... i try to practice puzzles as events dictate, but there are always new ones, which i like, but still a lot to learn, i admire you guys so much for your abilities.. normal people have no idea what you guys know and do, amazing... anyway, i will keep practicing, thanks for all you guys do;
@ 2015-12-26 1:05 AM (#20352 - in reply to #20267) (#20352) Top

An LMI player



An LMI player posted @ 2015-12-26 1:05 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 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
 Which set of puzzles did you like the most? Horse Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


@ 2015-12-26 1:20 AM (#20353 - in reply to #20267) (#20353) Top

Grizix



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Grizix posted @ 2015-12-26 1:20 AM

In graffiti snake, can there be 2x2 squares of black cells ?
@ 2015-12-26 1:21 AM (#20354 - in reply to #20267) (#20354) Top

rob



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rob posted @ 2015-12-26 1:21 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Just right
 Which set of puzzles did you like the most? Toroidal Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


Thanks! I had a bit of trouble getting started, and struggled with two or three puzzles (the large standard snake in particular; I had something very close to the solution quickly, but had to get there again slowly). Now to wait and see how much faster other solvers can go.
@ 2015-12-26 1:27 AM (#20355 - in reply to #20353) (#20355) Top

Administrator



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Country : India

Administrator posted @ 2015-12-26 1:27 AM

Grizix - 2015-12-26 1:20 AM

In graffiti snake, can there be 2x2 squares of black cells ?
Yes. (Note in Graffiti Snake, black cells refer to non-snake parts. The white cells refer to snake parts, so 2X2 squares of white cells are not allowed)
@ 2015-12-26 5:02 AM (#20356 - in reply to #20267) (#20356) Top

achan1058



Posts: 80
20202020
Country : Canada

achan1058 posted @ 2015-12-26 5:02 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 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
 Which set of puzzles did you like the most? Graffiti Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


I suck at snakes, though I do think I did better this time around then I do on average.
@ 2015-12-26 6:27 AM (#20357 - in reply to #20267) (#20357) Top

Grizix



Posts: 30
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Grizix posted @ 2015-12-26 6:27 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Average
 Which set of puzzles did you like the most? Graffiti Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


@ 2015-12-26 11:00 AM (#20359 - in reply to #20267) (#20359) Top

chaotic_iak




Posts: 241
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Country : Indonesia

chaotic_iak posted @ 2015-12-26 11:00 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 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
 Which set of puzzles did you like the most? Summed Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


I'm personally not sure why Snakes is a theme by itself (and isn't considered a subtheme of shading or something), but eh. I'm not very sure either whether the variations represented the theme, but considering I can't think up of decent Snakes variations myself, I'll just say it's good.

The puzzles themselves are great. I think some of them have superfluous clues, but then this is aimed to beginners so I'm okay with that. Scoring I'm not very confident, but I think they are roughly correctly scored. Some 1-2 pointers took slightly more time than 3-4 pointers, but not big enough to say it's wrong. I'd probably give the Multiple Snake a bit more points though; it's easily the one that took the most time for me (10 minutes; the other big pointers are 5-6 minutes).

I made stupid mistakes on the first Summed Snake. The first mistake was genuine (note to self: 3+4+5+6 is as 18 as 5+6+7); the following four mistakes are silly typoes from reading the wrong columns. That might mean the answer key markers can possibly be larger... or it might just mean that I suck.
@ 2015-12-26 11:14 AM (#20360 - in reply to #20359) (#20360) Top

debmohanty




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debmohanty posted @ 2015-12-26 11:14 AM

chaotic_iak - 2015-12-26 11:00 AM

I'm personally not sure why Snakes is a theme by itself (and isn't considered a subtheme of shading or something), but eh.
Good question.
@ 2015-12-26 3:11 PM (#20367 - in reply to #20267) (#20367) Top

Pratyu2812



Posts: 5

Country : India

Pratyu2812 posted @ 2015-12-26 3:11 PM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Too many medium difficult puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Standard Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


I enjoyed solving even though am quite a beginner :) Just found it a little hard. Expected considering its a qualifier round for IPC.

Was wondering how everyone else solves these puzzles. Would love to know about it!

Thanks!
@ 2015-12-26 4:12 PM (#20369 - in reply to #20267) (#20369) Top

Swagatam



Posts: 45
2020
Country : India

Swagatam posted @ 2015-12-26 4:12 PM

 How well did the variants represent the theme of the test ? variations represented the theme well
 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
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount


@ 2015-12-26 7:10 PM (#20371 - in reply to #20267) (#20371) Top

vopani



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vopani posted @ 2015-12-26 7:10 PM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Too many hard puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Horse Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


Don't like Snakes in general, but I found this hard. Couldn't get any of the Toroidal ones going.

I think the puzzles are excellent, top-notch quality, but not suitable for beginners.

Thanks Ashish!
@ 2015-12-26 8:02 PM (#20373 - in reply to #20360) (#20373) Top

vopani



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vopani posted @ 2015-12-26 8:02 PM

debmohanty - 2015-12-26 11:14 AM

chaotic_iak - 2015-12-26 11:00 AM

I'm personally not sure why Snakes is a theme by itself (and isn't considered a subtheme of shading or something), but eh.
Good question.

I agree. Snake can definitely be part of Classics or Evergreens, since it is a single puzzle type.
Initially, we had Word Puzzles as a round, but decided to keep that aside for some reason I don't remember. Maybe next year it might be a good idea to introduce Word Puzzles and fit Snake elsewhere.
@ 2015-12-26 8:14 PM (#20374 - in reply to #20267) (#20374) Top

prasanna16391



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prasanna16391 posted @ 2015-12-26 8:14 PM

We basically felt that we should have one round with a specific but prominent type. While Snake is largely shading based while solving, I think there are certain logical characteristics which differentiate it from other shading puzzles and pull it more towards path puzzles done with shading. Anyway, next year we are most likely to continue the model of having one round for a specific type which is prominently appearing in contests, but has a little bit of a unique feel of its own.
@ 2015-12-26 8:15 PM (#20375 - in reply to #20367) (#20375) Top

prasanna16391



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prasanna16391 posted @ 2015-12-26 8:15 PM

Pratyu2812 - 2015-12-26 3:11 PM

I enjoyed solving even though am quite a beginner :) Just found it a little hard. Expected considering its a qualifier round for IPC.

Was wondering how everyone else solves these puzzles. Would love to know about it!

Thanks!


I suggest you ask for specific puzzles. Its difficult to give one broad explanation for all of them, but if we explain one or two you may start getting the approach for the rest too.
@ 2015-12-26 8:52 PM (#20376 - in reply to #20374) (#20376) Top

chaotic_iak




Posts: 241
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chaotic_iak posted @ 2015-12-26 8:52 PM

prasanna16391 - 2015-12-26 11:14 PM

We basically felt that we should have one round with a specific but prominent type. While Snake is largely shading based while solving, I think there are certain logical characteristics which differentiate it from other shading puzzles and pull it more towards path puzzles done with shading. Anyway, next year we are most likely to continue the model of having one round for a specific type which is prominently appearing in contests, but has a little bit of a unique feel of its own.


Oh, right, there are also loop/path puzzles. Yes, Snakes belong to either of them. If the reason is "we need a round where there's only one type", then I can't argue with that, okay.

Also, calling that type to be Tapa (for the sole fact that it's the one that I can recall that has many variations).
@ 2015-12-26 11:00 PM (#20377 - in reply to #20267) (#20377) Top

prasanna16391



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prasanna16391 posted @ 2015-12-26 11:00 PM

Tapa is definitely an option in future years along with a few others we have in mind :)
@ 2015-12-27 8:14 AM (#20378 - in reply to #20267) (#20378) Top

rakesh_rai




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rakesh_rai posted @ 2015-12-27 8:14 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Too many medium difficult puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Horse Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


Solved logically rather than intuitively, and it took a lot more time perhaps than it should have taken. I was too slow and could not even lay hands on any of the toroidals or exploratory ones. But I liked all the puzzles I solved.

Somehow my expecatations before the test were high for this test, and I was expecting 80+ points but fell short by a lot in the end. The test turned out a little tougher than expected.
@ 2015-12-27 9:25 AM (#20379 - in reply to #20267) (#20379) Top

swaroop2011




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swaroop2011 posted @ 2015-12-27 9:25 AM

 How well did the variants represent the theme of the test ? variations represented the theme well
 What was your opinion of the distribution of easy/hard puzzles? Too many medium difficult puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Summed Snake
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


Another beautiful set of Puzzles.
That's surprising that, I am ahead of others in Indian contingent. Thought Rohan would be way ahead.
Personally, I don't like snakes and I am very bad at those.

But somehow these puzzles i went logically and fluently. Especially I liked the Summed Snake (ALL 4 , didn't had to do lot of calculations and it was more intuitive how the path should go).
Only part where I guessed was the classic SNAKE big one.
This test itself was on harder side, but was expected after last easy round. I second Rohan that, I couldn't even do any toroidal (not even smaller ones). But lets see, will try soon and see if I can still get it.
Horse Snake,while practicing i found a nice notation technique for myself (don't know how other solve usually), which helped a lot and that worked out well during contest too. So horse snake i did pretty smoothly.
Graffiti were easy, that was reflected in points as well. Even the variant was small in size so pretty easy.
Multiple Snakes, not even got a chance to touch it.

Overall wonderful test. Thanks Ashish for the contest. I thought I would do bad, but seems I did pretty well. Let's see how others do.
Snakes - 26th - 28th Dec - Puzzle Ramayan & IPC Qualifier82 posts • Page 1 of 4 • 1 2 3 4
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