STUCK

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PB Post 2013 01 19   (Repeated lower down)

I can only get the 14 blue boxes. I CANNOT SOLVE IT!!

PB Post 2013 01 19 Same as above, except the blue boxes are filled

To eliminate underlined values: 

     I used "Colors" to eliminate 3 from C4.

     In row 1, there are 2 pairs of 2/7 which allows me to strike 9 from B1, and strike 3&5 from C1.

But I am stuck after that.

  SOLVED          SOLVED           SOLVED   

WITH GUESSING that A4=3!

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PB Post 2013 01 26   (Repeated lower down)

PB Post 2013 01 26 w 38  Same as above, except the green boxes are filled.

(Note: Using "simple" methods, the 3 underlined numbers can be eliminated as choices.) 

With 38 filled in I used a chain starting with the 6 in C4. Then F4, F2, I2, I9, G7. This proved that C7 and G4 cannot contain 8.

Another chain started with 7 in F2. Then I2, I9, G7, G6. Proves that G2 cannot contain 3, and therefore H1=3.

Found a chain starting with 8 in C4. Then H4, G4, G6, G7.  Proves that C7 cannot contain 6.

STUCK

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PB Post 2013 04 06  Lvl 6    (Repeated lower down)

PB Post 2013 04 06 Lvl 6 w41      Same as above, except the green boxes are filled.

Note: Using "simple" methods, the 10 underlined numbers (A1&8, B3&9, E8, F2&9, I1,2,&3) can be eliminated as choices.

To proceed a little I colored with 4's (columns D and G). This eliminated other 3's in rows 1 and 4.

STUCK!

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PB Post 2013 05 11  Lvl 6    (Repeated lower down)

PB Post 2013 05 11 Lvl 6 w45    Same as above, except the green boxes are filled in.

This puzzle had many high skilled eliminations. Among others, look in row 5 for two 7/8 pairs, and in row 7 for two 1/4 pairs. This allows several ellims, and leaves C4 = 7. (shown below)

After those, coloring 3s can prove that A8 cannot contain a 3.  MULTI-COLORING 8's beginning in B4 and E6 proves that B9 cannot equal 8.

A chain begins with the 6 in E1.  Then  D2, I2, I5, I8, I4, and G4.  This proves that E4 cannot=2.

After all that work......STUCK

PB Post 2013 05 11 Lvl 6 w44    (THIRD SHOWING) Same as above, except the pink box is filled in, and a few extra elims were performed using coloring and a chain.

Explanation is given ABOVE this showing.  STUCK

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PB Post 2013 07 04  Lvl 4 (6)    (Repeated lower down)

PB Post 2013 05 11 Lvl 4 (6) w31    Same as above, except the blue boxes are filled in.

STUCK

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PB Post 2014 02 01 Lvl 6  (Repeated lower down)

Grey boxes are filled in the next picture:

PB Post 2014 02 01 w35   Same as above, except the two blue boxes are filled in.

I'm still working on this puzzle. Despite arduous advances, still not solved!

(w33:Ch8:C1 C7 f7 f1 f2 e2 d3 b3 b5 »b1,c2ø2. Gave more eliminations, but no solution)

STUCK

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PB Post 2014 03 22  Lvl 6 (Repeated lower down) Triple checked.

PB Post 2014 03 22 Lvl 6 w44            Same as above, except the blue boxes are filled in.

Note: Using "simple" methods (hidden pairs), the 5 underlined numbers -in Groups 6 and 8 - can be removed as choices.

To proceed, I found a chain beginning with 4 in A7.  Then A5, C5, G5, H4, and H1. This proved that H7 cannot be a 1.   Blech!!   No help.

I cannot solve this puzzle.

STUCK

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PB Post 2014 04 05  Lvl 6 (Repeated lower down)  Triple Checked

PB Post 2014 04 05 Lvl 6 w39   Same as above, except the pink boxes are filled in.

STUCK