White chose to let up on the pressure in the middlegame, however, and also missed a tactical blow from Black on move 16, which eventually let me equalize. I should have entered the tactical complications of 17...Qxb2! after which White has no better than a perpetual, but even after spending a great deal of time on the calculations, could not definitively resolve them in my favor. Even with the lesser move, a bishop retreat, I was able to transition into an equal endgame, but being tired (or lazy, depending on how you look at it) I allowed White to win a decisive central pawn, then called it quits after blundering another one.
The game showed how psychology and fatigue can influence both sides in what was a rather wild, see-saw match. However, that's exactly what a Dutch Defense game should be, so I'll keep working on it. Lesson learned in one sideline, at least. On the positive side, my tenacity in the middlegame was good, as I constantly sought for opportunities to strike back rather than accept my fate. My tactical vision (when I actively looked for it) was also good in places, for example with the exchange sacrifice sequence started on move 9, the need to play 13...e5 to try and free my game, and seeing the possibilities on moves 16 and 17, even if I failed to fully calculate the large amount of complications after the best move.