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| | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What did you think about the puzzle quality of the test? | Fairly 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 | |
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Location: India | Leaderboard updated - http://logicmastersindia.com/PR/2015-16-ranks.asp |
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Location: India | Hotel - 2015-12-29 5:01 PM
In this test, I think toroidal snake is most difficult. In particular I couldn't find even the first step of two puzzles on page 6. Anyone knows how to start?
Steps for Toroidal 12X12
(Logic and images from Prasanna)
| Step 1 : The 8 and 9 clues for row4&5 takes up 17 cells. Whatever way it goes since it cant form a loop around the grid, 2 cells space will remain empty. So you have 11 columns to fit in 17 snake cells. In every 2 columns, you can have maximum 3 snake cells. So 10 columns can have max 15. One extra column will have both snake cells. So it is a complete zig zag configuration. |  | Step 2 : Since it forms a zig zag path, there will be only one exit from row4/5. And it has to be towards row 3 because the 1 clue of row 3 can not be satisfied otherwise. |  | Step 3 : The snake can not go up from R4C3, because of the 3 clue in that column. So you can complete the Zig Zag configuration.
In column 1, 7 of the remaining 8 cells are to be snake parts. So exactly one will not be snake part. If both R1C1 and R2C1 are snake parts, the 4 of row2 can not be satisfied. [ There are 2 cases if both the cells are snake cells. These 2 cases are shown in 2 different images ] |  | |  | | Step 4 : So now row 7 to row 12 of column 1 are snake parts. |  | Step 5 : Some standard book-keeping stuff. |  | | Step 6 |  | Step 7 |  | | Step 8 |  | Step 9 |  |
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Location: India | Solutions appended to puzzle booklet. |
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PR 2020 (MII and Regions) Author
Posts: 55
Location: India | Congrats to EKBM, Uvo and Deu for top 3 places. congrats to Prasanna, Amit and Swaroop for top 3 India. Thanx to all 173 participants.
Thanks to deb for giving me the opportunity to conduct the contest. the contest was on a tough side. Toroidal seemed to be the toughest in this contest. there were 22 participants who submitted all the 22 puzzles correctly :)
hoped u all enjoyed the contest. Thanks |
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Location: India | Steps for Snake - 1
1. The snake has not go up from R7C5, otherwise the 6 clue of row 6 can not be satisfied.
2. At R6C5, the snake has to turn right.
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Location: India | Steps for Snake - 2
If the snake passes through R3C1, that end will meet R2C3. No further snake parts are possible in the right side region, so the 3s of R2/3/4 can not be satisfied.
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Location: India | Steps for Snake - 3
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Location: India | Steps for Snake - 4
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Snakes - 26th - 28th Dec - Puzzle Ramayan & IPC Qualifier
