If Gellert Grindelwald and Albus Dumbledore

made a blood pact,

how did they both not die or receive magical repercussions when the 3-way duel between Aberforth, Albus, and Gellert broke out?

Gellert Grindelwald and Albus Dumbledore both

swore to never fight each other,

so how did they duel each other with no repercussions when the duel between Albus Dumbledore, Aberforth Dumbledore, and Gellert Grindelwald happened?

(the duel that killed Ariana Dumbledore)

Since Albus Dumbledore and Gellert Grindelwald part ways after the 3-way duel and don’t see each other until their 1945 legendary duel, they had to have made the pact before Aberforth found out and confronted them about their plans for the future, which means that they

made their blood pact before

the 3-way duel erupted?

closed as primarily opinion-based by Dave Johnson, TheLethalCarrot, RDFozz, Mat Cauthon, Bellatrix Nov 20 '18 at 0:35

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 6
    We don’t know what they swore with their blood pact. We also don’t know whether they actually fought each other as teenagers – Aberforth and Grindelwald definitely fought each other, but Albus was presumably mostly trying to break up the fight. – Janus Bahs Jacquet Nov 19 '18 at 21:36
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    I’d be very surprised if this isn’t revealed in one of the upcoming films. As such this probably falls foul of the future world policy. – TheLethalCarrot Nov 19 '18 at 21:37
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    Also please be mindful of spoilers for other users. – TheLethalCarrot Nov 19 '18 at 21:39
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    It's not clear how the blood-pact works. It might just make spells bounce off of each other which would explain Ariana's death – Valorum Nov 19 '18 at 21:39
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    It did have repercussions, it killed Arianna. – Möoz Nov 23 '18 at 5:34