I have some flaws in my OTB game, and one of the reasons I play here is to correct those flaws.
In OTB, I sometimes play superficially, I don't use enough time (rarely more than 40 minutes in even the slowest games, unless I am losing...), and even when I play a disciplined game for 40 moves, I look too far ahead on move 41 and miss the one-move threat.
Over the last year, I have made very good progress here on the site in removing the simple mistakes and "two-move"-style blunders, but I recently had a reminder that I still have work to do.
I have been studying and playing the Veresov Opening here, and I have a good number of games going on with various lines and ideas within the opening.
In some games, I have played the same line, to see what various approaches my opponents might take.
Imagine my surprise to find that two players had exactly the same idea, and I blundered a piece in both! I try not to make the same mistake twice, but I apparently need to try harder. At first I was angry, but after I got over it, I just had to laugh! I'm sure someone will say that I should have played on, but both opponents are very good players, and I did not think that the marginal value of continuing was equal or greater than the additional time I would need to invest playing a piece down with only marginal compensation. Here they are: