Ahhh I missed Ke4 and lost this
Ke4 is the cleanest because it forces a Queen swap, but Kc2 should also win.
Losing this as Black with half a minute on the clock is quite an achievement, unless you were not playing at an increment.
He definitely wasn't playing on increment, blackbelt is like the dirtiest flagger of all time.

Ahhh I missed Ke4 and lost this
Ke4 is the cleanest because it forces a Queen swap, but Kc2 should also win.
Losing this as Black with half a minute on the clock is quite an achievement, unless you were not playing at an increment.