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Str8ts Solver Updated 3rd July 2012!
1 2 3 4 5 6 7 8 9
Set cell colour Symmetrically
Enter clues or solutions
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Quick Rules:

Rows and columns are divided into compartments of white squares. Use single numbers to complete a straight for each compartment. A straight is a set of numbers with no gaps and in any order. No single number can repeat in any row or column. Clues in black cells remove that number as an option in that row and column, and are not part of any straight

A
B
C
D
E
F
G
H
J
                 
                 
                 
                 
                 
                 
                 
                 
                 
Version 1.07
See Strategy Overview documentation

Coordinate system: Letter/Number rYcX
1
2
3
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7
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9
Show Candidates
Check for Solved Squares   
Show Possibles  
1: Compartment Check  
2: Stranded Digit A  
3: Stranded Sequence A  
4: Compartment High/Low A  
5: High/Low Str8ts (rows) A  
6: High/Low Str8ts (cols) A  
7: Stranded Digit B  
8: Stranded Sequence B  
9: Compartment High/Low B  
10: High/Low Str8ts (rows) B 
11: High/Low Str8ts (cols) B 
12: Naked Pairs  
13: Naked Triples  
End Strategies


What's 'A' and 'B'?
I've split these strategies into two. The first time they are called - 'A', they only look for eliminations which return a solution for a cell, ie one number is left. This focuses the solver on the shortest path. If this fails, 'B' is called, which returns all eliminations, if any are possible.

New in version 1.07
Added 'Stranded Sequence' and 'Compartment High/Low' strategies. Many thanks to Konrad Kritzinger for the best tips and others who have pointed out improvements.
New in version 1.06
I have re-written this solver to bring it up-to-date with the other solvers and finally added missing features:
  • automatic state saving (in case you accidentally navigate away)
  • [Save] and [Reload] are now available
  • The [New] button now works and you can create the black and white cells.
This is in preparation for adding more strategies. If there are no bugs I will build on this base.

Please report any bugs. Tested in IE, Firefox, Safari and Opera
If you are getting errors please clear your browser cache to retrieve the latest script files
 

Solver created on 21-Nov-2008.
Solver updated on 31-May-2012.
All puzzles on this site are trademarked and patented and cannot be reproduced without permission.
Copyright Syndicated Puzzles Inc, 2008-2012