Does anyone know what “game shapes” are?


They are sort of explained in the Insights and they have little picture icons that are supposed to be helpful. The pictures would tell you something about how the game evaluation scores changed during the game. They are obviously simplified.
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Balanced- neither player ever had an advantage
Giveaway- One player was winning and then gave it away
Sudden- a close game that was lost by a mistake
Smooth- One player took the advantage and never let go
Sharp- a back and forth game where both sides had chances
Wild- a close game where both sides had many chances to win
Intense- that was a serious chess game!
Most of them are pretty easy to comprehend. I don't really know how "intense" is different than wild.