Urgghhh..this one make my brain damaged...

Wonderful Sudokus... couldn't finish the bunch but enjoyed the difficulty level... Looking forward to more :-)

Thank you for every participant and your feedback, it help us to do better in the future.

We will show you some design idea in Qixi:
First, the classic relay part, please have a look at every puzzle's clues, they're from 20 to 27. but when solve them, you will find they become more and more difficult. In many people's concept, more clues mean much easier. In fact, count of clues and difficulty are not equal. We don't tell you the correct position of every stick digit, but you can determine them by logic. There are many players become puzzle designer, and the process of determine stick digit is also a design, no matter if you had tried design a sudoku, in this test, you had tried. Fulfill the puzzle, then solve it. That's why many players like the classic part. And we also do some thing about this: if you put digits to the wrong place, you will find no solution for the puzzle, or if you haven't decide all marked cells, you will find multiple solution. To the puzzles themselves(i mean when you put all stick digits in right place), when solve P01 from 1 to 9, you can get all 1, then all 2...all 9, maybe you never find solving sudoku is so happy. P02 - P06 are puzzles can be solved only by singles, but we make them difficulty in observing. P07 - P08 need intersection, pairs and x-wing, they are all basic advance techniques.

To variants match part, at first you will find that you can't solve any number by clues, it's like mock test 11 last year. Then you must determine every situation's rule first, it's mostly like a sudoku, and hints are from eight situation. We make a diagram for you:



(They are all from clues, no guessing or trying to solve one situation for finding a mistake.)

There is a trap in P09, you can try to solve it by diagnol, it has unique solution, but it's a very tough puzzle and you will find another situation don't have rule to correspond. P13 and P15 have the same pattern, it's only for fun :-)

By previous 16 puzzles effort, a "heart" bridge is built. In this twins suoku, you can only solve few cells in single grid, but when make them together(same meaning of "17" in Chinese), can be solved by single. It also means one need to support others.

At the end, thanks for LogicMastersIndia give us the chance, and all you spend the wonderful Qixi time together.

TTHsieh&Leafcard

Congratulations to the top 20. 600+ in this test is indeed a great score.

I thought that Diagonal should be the easiest variant (as it is the most common variant) but after looking at the results, it (along with Touchy) proved to be the toughest of the lot.

Was the 2-hr timing enough? The scores suggest it was not.

Looking at scores and when I see that no one including Snyder or Janoslaw could complete it, its evident that 2 hrs was not enough

Congratulations to Jakub Hrazdira, Thomas Snyder, Rodolphe Hurel, Chen Cen and Wu dong yi for topping in LMI Qixi Special Sudoku Test

There were 141 participants out of which 102 got non-zero scores.

Thank you all for participating and making this a success.

Click here for the solution booklet

Sudoku tests take a break now.

Next 2 tests will be Puzzle tests and then we've IPC planned.

Many thanks to Lin Min Fang and her team for this wonderful set of Sudokus.
I'm sure they have lot of time designing the Sudokus (e.g. in all MatchMaker puzzles it was not possible to solve a single digit without determining its type) [ That probably made it tough :-) and Niulang and Zhinv could not meet )

2:30 hours test would have ensured that at least a couple, if not many, players would have got the bonus points.

Thank you again.

Deb: Actually, 102 participants got non-zero scores.

Did anyone manage to get all 8 matchmaker variants correctly ?

Ouchh... Thanks for correcting me.

one of the toughest but most interesting competition........
All the puzzles were 5*..

2 players (zorko and nikola) got all the Match Makers correct. [ Interesting that zorko has submitted only one classic ]
janoslaw got 7 correct.
4 more got 6 correct.

As many as 29 players got all Classics correct.

Check here for the split - http://logicmastersindia.com/M201008S2/ScoreSplit.asp

Thanks Deb. So, most participants did not get enough time for matchmakers as only 56 participants got points as against 101 in classics.The testing of the sudokus and the duration of the test could have been better designed. For example, diagonal, touchy, and no three odd/even could have had more points than the rest of the variants. Also, having the test for 2.5 hours is not correct (its too long). We could have dropped one classic and one variation perhaps for a 2 hr test.

well..when i completed the classics i found that i had 6 mins left for the variants. :P, i am really slow , i don't know what the standard advanced techniques are...is there some place where i can learn or in that case even the basic ones :P

for some players, Qixi rank is displayed as Qixi Score. This will be fixed soon. Sorry for this inadvertent miss.
thanks to luckypunk for bringing it to our notice.

Wonderful sudoku test, congratulations for organizers and all toppers! Classic sudokus are my old complaint, but I think this time I chose the wrong tactics. I have the same number of performed puzzles as Jakub and Thomas, and look at the difference! I solved all matchmaker in about 85 minutes and the rest of time did only 6 classics.

Thanks to Lin Ming Fang.. very logical and definite clues to figure out the match makers :-)

To luckypunk: you can search "intersection, pairs, x-wing" by google.
To rakesh_rai: diagonal, touchy and no 3 odd/even in line are most difficult in variants part, both the puzzle itself and determining the rule. But if one solved as the order we show, he can complete at least 5/8.
Are there someone need help with the puzzles? Please let us know. All puzzles can be solved by logic.

yo thnxs min..got many links...will improve now..

MinFang Lin: If you could give a few starting steps on the diagonal (without trial/error), that'd be helpful. I am stuck at the beginning itself

Deb told me about this, maybe your question is many players' question.
i will show you later...please give me some time to do it.
Are there any other questions?

Thanks for this wonderful tournament, I've just finished to solve grids (I redo the entire relay as it was a catastroph during Test).

About my test:

I did wonderful stupid mistakes on part I (relay): Bad report of relay numbers between puzzle 1 and puzzle 2 (I lost about 10 minutes at the very beginning of the test ). On another relay puzzle, I copy numbers on cells with grey circles instead of cells with white circles .
After 1h10 and finally 7 relay puzzles laboriously finished, I begin "match maker part", it was fun and I manage to solve 5 grids in about 35 minutes (with one mistype - a single digit - on the antiknight), which is quite good, I think. Then during the last minutes I try to solve the last relay puzzle, with no success .

After the test, I finish "match maker part". It was really fun and very good grids. Diagonal was very tough, perhaps too much for this 2h tournament.

grids 17 were fun, too !

I think, inversely to "sampler platter", it was a little bit too difficult for a 2h tournament. Relay are always a trap because you can't do mistakes, otherwise it spreads on next puzzle and you are blocked on every other grids.
Perhaps a 6-grids relay and easier diagonal grid on match maker would have been more balanced for a 2h tournament.

However, it was a very good test with very good grids ! Thanks !

Fred

Transfer square No.16 (row 4, column 5 in the diaonal puzzle) has only possible digits 2,5,7. Look at final twin puzzle, transfer clues 1 and 14 are digits 7 and 2. So transfer clue 16 has to be 5 and transfer clue 15 is 8 (only possible 8 in irregular shape)

When you add these two digits, diagonal puzzle is easy to complete

Of course, this trick is possible only if you already solve some others matchmaker puzzles before diagonal.

Edited by Gotroch 2010-08-17 7:21 PM

there is much of a tie in the standings. Should they not be classified according to the time resolution?