Strategies for Number Puzzles of all kinds
Print Version
Latest Apps

Valid XHTML 4.01 Transitional


Post an idea here...
Your Name or Handle

Your comment, idea or question

Please enter the
letters you see:
Enter these letters
Remember me

Please keep your comments relevant to this puzzle.
Email addresses are never displayed, but they are required to confirm your comments. To state your solve time use the smaller form at the top right of this page." & vbNewLine & _ Line breaks and paragraphs are automatically converted ? no need to use <p> or <br> tags.

Saturday 13-Dec-2014


Thanks for the early Xmas present. #154(the first new 'unsolveable' since Oct.4-10) was readily solved using only steps 1-6 to yield 10
fill-ins, and then solving the quad in row H via testing a 3 in cell H7.
No need for any steps from 7-35 just basic candidate search logic and then combination analysis . Time to solve---15 minutes!!

Saturday 13-Dec-2014

... by: ray

#1. Use basic strategies to get working board and apply bi-location tool.
#2. Choose cell J9{3679} - bi-location cell for 6, tri-location cell for 3 and 6.
Forcing J9 = 3 or 6 gives inconclusion, J9 = 7 gives the solution.Using
this solution,other bi-location 1-cell solutions found are: J3 = 6; other
1-cell solutions are:H7 = 3; some 2-cell solutions are: DF7 = (7,8),
G23 = (4,2), D1H5 = (6,1). Note: only basic strategies were used.

Tuesday 9-Dec-2014

... by: JC Van Hay

#1. 10 Singles; Swordfish(3C159)-3H3.B7; XWing(6C19)-6D7; Jellyfish(8R2468)-8ACGJ1379

#2. F7=4 -> G7=6, A9=4, GJ3=24, XWing(3HJ1,3H7J9)-(3=1)H5, B7=1=J2, J1=6, H1=3=J9, XWing(78C19)-(78)D7; D7={} :=> A7=4

#3. 3H7=HP(23-6)CG7=6J9-...-Kite(6JD1,6E29)=HT(631)E468-1D7=*[1H5=1B5-1B7=*(1-2)C7=HP(23)GH7] :=> -3J9.H5; 9 Singles

#4. (78=3)H13-3H7=(3-6)G7=6G3-(6=378)J1.H13 :=> -7GJ23,-8BJ2.H7; Singles to the end.


Each week a new 'unsolvable' will be published and the previous will be accessible here from this archive section. If you like very tough puzzles, these are for you.
Share and Enjoy

Post a Comment using Facebook...

Page created on 03-May-2011, last modified on 03-May-2011.
All puzzles on this site are trademarked and copyright
and cannot be reproduced without permission.
Copyright Syndicated Puzzles Inc, 2011-2014