Here it may seems like Grischuk blunder. That nothing can go wrong with 12…e4 in fact Aronian thought this way and played 12…e4. There is a rule that says we must stop calculation when there is no more forcing moves. It makes a lot of sense. Sometimes there exist some hidden forcing moves we miss and that is exactly what happened to Aronian here.
GRISCHUK – ARONIAN
BLACK TO MOVE
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