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LMI Book - Sudoku Mix Vol #1•
WSPC 2017

Riad's September Sudoku Contest 2019 (6^{th} - 10^{th} Sep) Score •Discuss

Pentakaideca (20^{th} - 24^{th} Sep) has started •Discuss

Pentakaideca (20

Riad Khanmagomedov's April Contest — 3rd to 11th April 2018 | |

LMI Tests -> Annual Competitions | 44 posts • Page 1 of 2 • 1 2 |

Administrator |
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Location: India | Coming Soon! | ||

Administrator |
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Location: 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 not 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 will be some optimizer puzzles. Other puzzles will be very hard (compared to regular LMI tests) • Same scores will have same rank (i.e. early submissions do not count towards rank) | ||

Puzlifouk |
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Posts: 49 Location: France | Hello everybody, I'm really impatient ... Can we know what time PB will be available online? | ||

Administrator |
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Location: India | ## Puzzle BookletThe PB should be available at 12 PM Moscow time (0900 GMT) on April 3rd. | ||

Administrator |
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Location: India | The test has started and PB is available now. | ||

Para |
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Posts: 311 Location: The Netherlands | For 10. Does minimum mean the amount of digits or the sum of their values? For 11. Can you place a black triangle in a given cell with a triangle to turn it into a fully black cell? Edited by Para 2018-04-03 7:06 PM | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | Para - 2018-04-03 7:00 PM For 10. Does minimum mean the amount of digits or the sum of their values? For 11. Can you place a black triangle in a given cell with a triangle to turn it into a fully black cell? 10. Minimize the sum by using fewer digits. 11. Yes. | ||

Para |
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Posts: 311 Location: The Netherlands | Riad Khanmagomedov - 2018-04-03 7:21 PM Para - 2018-04-03 7:00 PM For 10. Does minimum mean the amount of digits or the sum of their values? For 11. Can you place a black triangle in a given cell with a triangle to turn it into a fully black cell? 10. Minimize the sum by using fewer digits. 11. Yes. Sorry, my bad for not clarifying well enough. I meant for when two solutions are tied for score. It says the minimum digits. Does this mean the solution with fewest digits used or the solution with the lowest sum of the digits used. | ||

Administrator |
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Location: India | ## Puzzle 10 - Minor changesThere are few changes suggested by the author. An updated PB shall be uploaded on April 4th. Number Range Numbers from 1 to 5 can be used in coloured cells. Four sets of numbers from 1 to 5 are available. 6 and 7 cannot be used. Ranking Criteria - Minimum Value of (A+2B+3C) wilI be used to rank solutions. - If two solutions have the same value of (A+2B+3C), then the solution using minimum number of digits in coloured cells is considered better. - If two solutions have the same value of (A+2B+3C) AND use the same number of digits in coloured cells, then the solution which has minimum sum of digits in coloured cells is considered better. - If two solutions have the same value of (A+2B+3C) AND use the same number of digits in coloured cells AND have the same sum of digits in coloured cells, they will have the same rank. | ||

chaotic_iak |
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NEW, HUGE, AND CHALLENGING Author Posts: 228 Location: Indonesia | In 11 can the ball cross its own path? | ||

ghirsch |
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Posts: 88 Location: USA | In 12, is it a requirement to use all pentominoes (i.e. should K always be 8)? If not, should the formula be 2L - K? Otherwise we are penalized for using more pentominoes, and clearly the more pentominoes, the harder it is to have few black cells. | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | chaotic_iak - 2018-04-04 9:20 AM In 11 can the ball cross its own path? No. | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | ghirsch - 2018-04-04 12:11 PM In 12, is it a requirement to use all pentominoes (i.e. should K always be 8)? If not, should the formula be 2L - K? Otherwise we are penalized for using more pentominoes, and clearly the more pentominoes, the harder it is to have few black cells. K is not necessarily equal to 8. Minimize K + 2L. | ||

Administrator |
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Location: India | ## Updated PBAn updated Puzzle Booklet is now available. | ||

ghirsch |
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Posts: 88 Location: USA | Riad Khanmagomedov - 2018-04-03 2:31 PM ghirsch - 2018-04-04 12:11 PM In 12, is it a requirement to use all pentominoes (i.e. should K always be 8)? If not, should the formula be 2L - K? Otherwise we are penalized for using more pentominoes, and clearly the more pentominoes, the harder it is to have few black cells. K is not necessarily equal to 8. Minimize K + 2L. Wouldn't the optimal thing trivially be to just use no pentominoes? You can make a loop through all the cells if they are all white, so K and L would both be 0. I feel like I must be missing something. Edited by ghirsch 2018-04-05 7:32 AM | ||

chaotic_iak |
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NEW, HUGE, AND CHALLENGING Author Posts: 228 Location: Indonesia | I think the missing thing is that the solution to 12 must be unique. It should be added to the PB. Edited by chaotic_iak 2018-04-05 7:38 AM | ||

chaotic_iak |
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NEW, HUGE, AND CHALLENGING Author Posts: 228 Location: Indonesia | More questions: 3: For the purposes of lawns, each diagonal segment is of the same length as horizontal/vertical segments? Also, can you go diagonally through a white cell, without any lawn next to you? 4: Can names repeat in the grid? 8: For the cells without slashes, the clues point to the longer direction (the direction with more than 1 cell)? Is it possible to make it more similar to Kakuro, so each square is slashed? | ||

amitsowani |
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Irregular Variations (SM 15/16) Author Posts: 322 Location: India | Riad Khanmagomedov - 2018-04-04 1:21 PM chaotic_iak - 2018-04-04 9:20 AM In 11 can the ball cross its own path? No. So this translates to - each half white and fully white cell needs to be visited exactly once? | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | chaotic_iak - 2018-04-05 7:38 AM I think the missing thing is that the solution to 12 must be unique. It should be added to the PB. The loop must be unique! | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | chaotic_iak - 2018-04-05 7:49 AM More questions: 3: For the purposes of lawns, each diagonal segment is of the same length as horizontal/vertical segments? Also, can you go diagonally through a white cell, without any lawn next to you? 4: Can names repeat in the grid? 8: For the cells without slashes, the clues point to the longer direction (the direction with more than 1 cell)? Is it possible to make it more similar to Kakuro, so each square is slashed? 3. Yes. 4. No. 8. Yes, to the longer direction. | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | amitsowani - 2018-04-05 9:56 AM Riad Khanmagomedov - 2018-04-04 1:21 PM chaotic_iak - 2018-04-04 9:20 AM In 11 can the ball cross its own path? No. So this translates to - each half white and fully white cell needs to be visited exactly once? The white cell can be crossed twice. The path should not overlap with itself. | ||

rob |
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Classics & Regions (PR 2016/17) Author Posts: 152 Location: Germany | For the solution code to puzzle 3, would a diagonal of length 2 be counted as 2 (it's two unit diagonals) or as 0 (it's not a unit diagonal)? | ||

bskbri |
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Sudoku Grand Prix - Turkish Round Author Posts: 30 Location: Turkey | 11. Rollball variation. - The ball goes through the centres of all white half cells and all fully white cells. So does it go through all current white cells, or can some of white cells be completely blackened by adding triangles? - "The ball can roll out of the grid or stay inside the grid" Does this sentence refer to the end of the route? Edited by bskbri 2018-04-06 3:58 AM | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | rob - 2018-04-06 12:16 AM For the solution code to puzzle 3, would a diagonal of length 2 be counted as 2 (it's two unit diagonals) or as 0 (it's not a unit diagonal)? The diagonal of length 2 is counted as 2. | ||

Riad Khanmagomedov |
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Moscow Puzzle Cup 2016 Author Posts: 133 Location: Russia | bskbri - 2018-04-06 3:57 AM 11. Rollball variation. - The ball goes through the centres of all white half cells and all fully white cells. So does it go through all current white cells, or can some of white cells be completely blackened by adding triangles? - "The ball can roll out of the grid or stay inside the grid" Does this sentence refer to the end of the route? 1. First you need to blacken some cells. Then through all the remaining white cells and half cells draw the route. 2. Yes, the end of the route. | ||

44 posts • Page 1 of 2 • 1 2 |

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