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Rating Assassins
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sudokuEd
Grandmaster
Grandmaster


Joined: 19 Jun 2006
Posts: 257
Location: Sydney Australia

PostPosted: Fri Mar 21, 2008 10:36 am    Post subject: Reply with quote

Found a bug in SS which could affect many puzzles & their scores. Back later - hopefully not 5 months this time!!

Cheers
Ed
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frank
Regular
Regular


Joined: 07 Oct 2006
Posts: 10
Location: Victoria, B.C., Canada

PostPosted: Wed Apr 02, 2008 3:03 am    Post subject: Reply with quote

Richard's SudokuSolver v3.0.0 rates this as 0.48 and also 0.60 depending on
how I open the file. However if a puzzle ever deserved a rating of 0 it is
this one. I have been very interested in SudokuSolver ratings and have
used it to rate many puzzles from different sites with fascinating results.
I applaud the effort to get a rating scheme is - it is well worthwhile.

But - let me know what happened to this one.





Text: 3x3::k:1024:769:1794:259:516:1285:1542:2311:2056:521:2314:267:2060:1805:1550:1295:1040:785:1298:1555:2068:789:1046:2327:1816:281:538:2331:284:1309:1054:1567:800:545:2082:1827:1828:1061:1574:551:1320:2089:2346:811:300:2093:558:815:1840:2353:306:1075:1332:1589:822:1847:1080:2361:2106:571:316:1597:1342:1599:2112:577:1346:323:1092:837:1862:2375:328:1353:2378:1611:844:1869:2126:591:1104:
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Andrew
Grandmaster
Grandmaster


Joined: 11 Aug 2006
Posts: 300
Location: Lethbridge, Alberta

PostPosted: Wed Apr 02, 2008 5:40 am    Post subject: Reply with quote

Nice April Fool's Day post Frank! Wink

Taking the point of rating this diagram, there are 81 Naked Singles so the score must be slightly greater than zero.
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sudokuEd
Grandmaster
Grandmaster


Joined: 19 Jun 2006
Posts: 257
Location: Sydney Australia

PostPosted: Wed Apr 02, 2008 6:46 am    Post subject: Reply with quote

frank wrote:
Richard's SudokuSolver v3.0.0 rates this as 0.48 and also 0.60 depending on how I open the file. However if a puzzle ever deserved a rating of 0 it isthis one
Ha, nice one Frank. Richard loves bug-finders! He'll enjoy that one.

0.48 is the equivalent of a zero rating. We've always called this an Assassin killer scoring project - not killers in general. As you can tell, SS is not so good at the bottom end and tends to squash them in pretty tight. Ruud's software method that he was working on with SumoCue (unreleased) was much more aimed at the lower end and spread those out much more.

frank wrote:
I have been very interested in SudokuSolver ratings and have used it to rate many puzzles from different sites with fascinating results
An update here on any generalizations/observations/results would be very interesting, especially as I'm a regular lurker elsewhere (sadly not Frank's for a long while Embarassed ).

frank wrote:
applaud the effort to get a rating scheme is - it is well worthwhile
Thanks! Richard has a long list of wish-list changes to SS(v3.0) (hidden killer triple, ALS cage block, killer quad etc) including many things for other formats, so the next V of scoring won't be for a good while.

Just to restate my last update - SSscore(v3) is only reasonably accurate up to about 1.40. It will usually err on the lower side. This is because "easier" puzzles that have a long solution set the maximum at about 1.40.

Thanks for your interest.

Cheers
Ed
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