A challenge

No.11108977 ViewReplyOriginalReport
>In order to find what's next (3/7), it's often a good idea to look in the past. This is an encoded artifact we've found in our archive. It appears that some of the data have been corrupted due to age. Fortunately, the corruption seems to be systematic—we detect exactly one extraneous number in every horizontal and vertical clue. Can you help us identify these anomalies and restore the artifact to its former glory?