Not sure where to go from here

Hi, Look at the squares with 5 as a possibility. If you cannot find anything helpful, try 3 instead.

Row6 Col9 is a 3.
That should break the strangle-hold.

Regards, Brian

Hi
Have you solved this already?
http://learn-how-to-play-sudoku.info

If stuck try this. Remove all possibilities. Not worrying about rows or columns look at each of the nine 3x3 grids. With each individual number put in the possibilities but only if there are two possibilities. eg if you have 5 empty cells and the number 8 can go into three of them, do not enter 8 as a possibility. After finishing with only two possibilities in each grid, check rows column ands grids for two cells with the same numbers. This will then remove those numbers as possibilities for other cells. What this tries to do is to remove noise from the cells so that you see patterns easier.

A further explantion; just looking at the columns starting from the left. Column 1 has two 7s in it. Columns 2 and 3 look cleaner. Now look at columns 2 and 7. Now look at rows (from top) and see 5s in rows 3 and 6. Therefore row 9 col. 4 must be a 5. Similarly but easier look at 3s in columns 2 and 4. That then puts a 3 in col 9 row 6. In row 9 the 8 completes the line. Fill in a few more two only possibilities and look in columns 3,4 and 9. You should be able to work out where one 8 goes.