Since the format of Codeforces Blitz Cup 2025 is quite novel here, a possibility for warmup duels was introduced: both to train for this specific format and to warm-up prior to the real tournament duels.

Yesterday I played one such duel against budalnik: https://youtu.be/bIzLZ1R5Gmk. The screencast of that will upload in around an hour and a half.