Back in 2021 I played this game on BrainKing.com:
I particularly like this game, and not only for the mating attack with a knight sacrifice (19. ♘xg6!). The remarkable detail is that both players also managed to play without any captures until the mentioned move 19, which is pretty unusual. In fact, at least a pawn is exchanged during the first 10 moves in most games. If not, the position becomes too constrained to allow any further development of pieces.
So, besides noting this personal achievement, I got curious and started looking for the absolute winner in this category. Of course, only officially recorded games can be counted, and I tried to restrict the results to “master” games as well. Long story short, this is the outcome:
The game was played at the World Junior Chess Championship in Stockholm (August 1969, Anatoly Karpov dominated the finals). If you click through the moves, you can observe that the first capture really happened at the move 94. Until then, white kept a positional advantage, but for reasons unknown didn’t manage to open any attack. Perhaps both players had been too tired to take any risks, and maybe that’s why they agreed on a draw in a position where white had been much closer to an eventual victory. See the diagram:
107. ♕xa5 ♝xa5 108. ♗xh6 and white is up to a pawn, while black has no compensation for this loss.
Fun fact: The game became game of the day at the online database chessgames.com on 5th February 2013.