Which pre-1453 sieges of Constantinople were closest to succeed?

The siege of 1204, obviously.

Now, seriously :

- The siege of 674, being understood as victorious less trough the city being occupied than suffering from an attrition tactic, and eventually ending with an Arab tactical victory followed by withdrawal (not unlike the siege of 1203 on some matters)

-The siege of 1422, maybe?, as an earlier Ottoman takeover?
 
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