sudoku puzzle

Here is a sudoku puzzle coming from this magazine

I found that B5 and B6 can only contain 6 and 7. 8 cannot be in B5 because D1 would be a 8 and neither B3 not C1 could be a 8.

I thought it would help me to find out the next number, but I'm still stuck at this step.

What is the next step?

  • $\begingroup$ Welcome to Puzzling, take our tour! Could you please provide proper attribution for this question? $\endgroup$
    – Jafe
    Aug 2 at 23:17


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