PB Post 2013 08 16 Lvl 5
To proceed, 4 naked singles were quickly found. Then notice in Column E, 1/7 pairs; In group 8 find 2/6 pairs. You should soon conclude that I8 = 4 and also G9 = 2.
Not too many obstacles after that.
(Later on, I THINK I used a 5/7 double in Row 2)
PB Post 2013 09 20 Lvl 5
In most cases on this website, the pink-boxed answers are the easiest, requiring lesser skills. That was not the main concern in this case. I rarely notice Triples, but one occurs in this puzzle if all the pink boxes are filled in. The results are shown next...
PB Post 2013 08 18 Sunday Lvl 5 w 45 Same as above, except the pink boxes are filled in.
This puzzle was saved in this partially completed form because in group 4, (after eliminating underlined) you can see a triple of 2s, 3s, and 8s. This means that A5 cannot be a 2, nor an 8 and must = 6.
Most likely the puzzle can be solved without noticing this, but I wanted to save the illustration of a Triple.
PB Post 2013 09 20 Lvl 5
PB Post 2013 09 29 Lvl 5 w 36 Same as above, except the pink boxes are filled in.
PB Post 2013 10 06 Sunday Lvl 5 w 40 Same as above, except the pink boxes are filled in.
To proceed,Note the doubles of 2/4 in row 2; Doubles of 4/8 in Col E; 1/2 pairs in Col H AND in Grp 9.
Two 6/8 pairs in col I; 5/9 pairs in Col G. Eventually you prove that H5 must equal 3. The results of all these findings is shown below.
PB Post 2013 10 06 Sunday Lvl 5 w 39 (3rd Showing!) Same as above, except the gray box is filled in.
To proceed, note the 4/9 doubles in row 8; 2/4 pair in row 2. This leads to G2=3.
NOTABLE (though not necessary): The bottom 3 of column I contain only 3,4,and 5. That is ONE way to prove that G8 cannot equal 4.
PB Post 2013 10 25 Lvl 5
PB Post 2013 10 27 Sunday Lvl 5
PB Post 2013 11 03 Sunday Lvl 5
PB Post 2013 11 15 Lvl 5
PB Post 2013 11 22 Lvl 5
PB Post 2013 11 24 Sun Lvl 5 (Repeated lower down)
PB Post 2013 11 24 Sunday Lvl 5 w 34 Same as above, except the green boxes are filled in.
To proceed, first use MULTI-color method, coloring 1's. This allowed 1 to be eliminated from B7.
Then a chain from B7 to H8 allowed removal of 7's from both C8 and H7.
It was easy from there.
* * * * * * * * * * * * * * * * * * *
PB Post 2013 11 28 Lvl 5 (Repeated lower down)
PB Post 2013 11 28 Lvl 5 (Repeated lower down)
* * * * * * * * * * * * * * * * * * *
PB Post 2013 11 28 Lvl 5 w 41 Same as above, except the blue boxes are filled in
.I would normally leave this puzzle as unsolved. But someone SOMEHOW (guessed?) filled in a 3 for G7. After that, 30 more boxes get filled in easily. Then something unique (for me) happened.
PB Post 2013 11 28 Lvl 5 w 10 (3rd SHOWING!) Same as above, except the gray boxes are filled in.
I found no way to PROVE what must happen next!
I finally guessed: B1 = 3.
I was right.
Was it just a lucky guess?
I tried again with B1=8. I was right again!
TWO POSSIBLE SOLUTIONS.
Awkward to phrase what's going on, but you might see how the symmetry in possible values allows two solutions.
PB Post 2013 11 29 Lvl 5 w 45 Same as above, except the pink boxes are filled in.
Note: Using "simple" methods, the 7 underlined numbers (in A4, A6, E1,H4, I4 & I6 ) can be removed as choices.
STUCK
PB Post 2013Lvl 5 w Same as above, except the boxes are filled in.
Note: Using "simple" methods, the underlined numbers (in ) can be removed as choices.
To proceed,
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