Here is a small bathroom that had a water leak which made the wooden floor buckle pop off the concrete. In retrospect I wish I had a before picture this thing was sticking up a good 2 inches. Anyway some of the boards were salvageable and some had to be replaced. The problem was that it was a discontinued variety of flooring and the only material available anywhere was half a box of the original material. Worse yet this wasn’t the only damaged spot, so you couldn’t just tear out the floor in one direction and replace AND the space to place the new boards had shrunk in the middle but not on either end. The difference between the middle area and the end was just under 1/8″.
So how to make the above picture happen? First, of the 3 rows that popped up 2 could be replaced easily just cut and glue. Second, cut to length and use the table saw to cut off the bottom side of the grove side of the board and make the grove deeper. That makes it possible to get the tounge side of the piece in place and the groove side partially in. If you press on the corner of the board enough to bend it slightly the end could go but the middle is too wide and the spot where it first starts to not fit is where to start using a sander to make it narrower. Then it becomes a process, check the fit, mark the starting location with tape, sand and repeat. Eventually the piece will fit and it’s glue time.
Time consuming and tricky but it saved replacing a whole wood floor running through most of a house.