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[eddieg]

Having a mental moment here on this puzzle.

So far i have (sorry for unsophisticated sample):

{78} 9 6 {24} {478} 5 {1348} {12348} {1247}
4 {178} {18} {269} 3 {278} {689} {28} 5
2 3 5 {469} {4678} 1 {4689} {48} {479}
{38} {148} 9 7 2 6 {13458} {13458} {14}
5 2 7 {13} {48} {48} {13} 9 6
{368} {1468} {1348} {13} 5 9 7 {12348} {124}
{369} {46} {234} 5 {146} {234} {19} 7 8
1 {678} {28} {26} 9 {27} {45} {45} 3
{79} 5 {34} 8 {17} {34} 2 6 {19}


The clue that is given (a '7' in row 3, column 9) does not set off any lightbulbs over my head. Any help is greatly appreciated.

[Angel]

Hi Eddie,

Looking at your candidates in column 4, 4 can only be in rows 1 or 3. Therefore it is not elsewhere in box 2.

Eliminating other 4s in box 2 leaves a naked pair, 78, in row 1 columns 1 and 5.

Eliminating other 7 and 8s in row 1 leaves row 3 column 9 as the only place for a 7 in box 3.

Over to you now.

[eddieg]

Angel,

Turns out to be something pretty elementary. These puzzles can be very humbling sometimes, as can my teenagers.

Thanks for the quick response. I was loosing valuable work time thinking of my "puzzle dilemna".

[riderdude]

eddie-
thank you for saving me the embarrassment of asking the question. i was at the exact same place when i got stuck. it was straightforward after the hint, but it was driving me mental that i couldn't figure out why the hint was what it was.

thanks, angel, for the help.

chris