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9th Belarusian Puzzle Championship will be held on the 28th of August in Minsk. The online-contest based on the puzzles of this championship will be conducted this day as well. See contest page for the details. Instructions are already available.

This topic is the place for questions and discussion.

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I am not able to understand puzzle. Can you please explain in more details or point me to some more examples.

5. Paper clips

8. PENTAMINO IN HALF

10. PENTATOUCH: Can there be any pentamino which does not touch any other pentamino?

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5. Paper clips: Will the number and size of clips will be given?

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**Andrey Bogdanov****Administrator**- From: Moscow
- Registered: 2007-05-30
- Posts: 355
- Website

## rajesh wrote:

I am not able to understand puzzle. Can you please explain in more details or point me to some more examples.

Look through page http://forsmarts.com/eng/puzzles/. There is a lot of examples of Belarusian puzzles. I found "Pentamino in half" in third issue of Forsmarts Puzzle Book and "Paper clips" in Issue 1 of FPB and issue 5 of Season 1.

5. Paper clips

For paper clips sizes are fixed. There ares clips of length 4, 5 and 6.

8. PENTAMINO IN HALF

Look to the given example. The distance from the left border to the nearest pentamino in top row for left grid is equal to 1, for right grid it is equal to 5. So the sum is 6 and this number is given as a clue.

10. PENTATOUCH

There are no any restrictions for nontouching pentamino. They can be.

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Chinese translation of IB, please check http://www.sudokufans.org/forums/index. … wtopic=103

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## Andrey Bogdanov wrote:

## rajesh wrote:

I am not able to understand puzzle. Can you please explain in more details or point me to some more examples.

Look through page http://forsmarts.com/eng/puzzles/. There is a lot of examples of Belarusian puzzles. I found "Pentamino in half" in third issue of Forsmarts Puzzle Book and "Paper clips" in Issue 1 of FPB and issue 5 of Season 1.

5. Paper clips

For paper clips sizes are fixed. There ares clips of length 4, 5 and 6.

8. PENTAMINO IN HALF

Look to the given example. The distance from the left border to the nearest pentamino in top row for left grid is equal to 1, for right grid it is equal to 5. So the sum is 6 and this number is given as a clue.

10. PENTATOUCH

There are no any restrictions for nontouching pentamino. They can be.

Thanks! I got these puzzles now. Looking forward for championship.

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**Andrey Bogdanov****Administrator**- From: Moscow
- Registered: 2007-05-30
- Posts: 355
- Website

Encrypted puzzles file is now available for download: http://www.forsmarts.com/pdf/BPC2010_Online.pdf. Password will appear at the contest page when contest starts.

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Thanks for these great puzzles. I could not solve many. I will try to solve these puzzles offline.

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**tamz29****Member**- Registered: 2009-02-08
- Posts: 24

The test was great, I'm worried about the answer keys to the snake puzzles.

I hope you accept the answers from both directions

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**nikola****Member**- Registered: 2008-04-25
- Posts: 51

Very very nice contest. Vladimir and Andrey, many thanks.

*Last edited by nikola (2010-08-28 23:02:40)*

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Sorry for the delay. Results are up. Adjustments to the table (obvious mistypes, re-order of the answer keys and so on) will be made tomorrow and then the final results will be announced.

Thanks to everybody for the participation!

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**Andrey Bogdanov****Administrator**- From: Moscow
- Registered: 2007-05-30
- Posts: 355
- Website

Now I returned home and checked all submissions. So you could see the final results.

Congratulations to Hideaki Jo, Nikola Zivanovic and Taro Arimatsu!

The results of onsite competition will be posted later.

Thanks to Serkan Yurekli, Alan O'Donnel, Alexander Shkolnikov and Ivan Grischenko for testing the puzzles.

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**nikola****Member**- Registered: 2008-04-25
- Posts: 51

My ranking is not important, but the third Jo's response is different from the exact solution, it has one coordinate more. Is it multiple solution or?

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**Andrey Bogdanov****Administrator**- From: Moscow
- Registered: 2007-05-30
- Posts: 355
- Website

## nikola wrote:

Is it multiple solution?

Unfortunately, yes. Nobody has seen this before.

Here is the picture:

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**Andrey Bogdanov****Administrator**- From: Moscow
- Registered: 2007-05-30
- Posts: 355
- Website

Short report about on-site competition.

10 Belarusian solvers and 8 Russian participated in the championship. Contest consisted of 4 parts. Two of them (the third and the forth) were included to the online contest, two others (the first and the second) you could find here (in English)

At first there was 20-minutes warm up round. It had nine standard easy (I thought) puzzles. Only Riad Khanmagomedov could solve all the puzzles in time and got bonus points. Two other solvers had seven of nine puzzles.

One part of the championship is traditionally devoted to sudoku. There was the second part this year. This 81-munites part consisted of nine sudokus connected to each other. All puzzles were difficult enough (especially "Puzula") and nobody could solve all of them in time. Also participants had a lot of silly mistakes (for example one empty cell or only one wring digit). Alexander Ershov had one such mistake but he was the only who solved "Puzula" and won this round with 305 of 450 points.

Assorted part was the third. There was longest part (90 minute) and consisted of 19 puzzles (all this puzzles were in online contest: 1-19). Vlad Klyachin had excellent result - he got 450 points out of 500 and this result brought him to the first three. Maxim Rutkovskiy was the next with 280 points.

At last there was "Six snakes" part for 45 minutes. I'd expected early solution and there were bonus points for them. Alexey Kravchenko was the first (in 39 minutes). Riad Khanmagomedov also solved all puzzles in time.

Summarized result gave first place to Riad who had good results in each part. Vlad was the second and Maxim was the third (the best from Belarusian solvers). Complete list you could see at chmpionship's page.

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