US free solo climber confirms he will return to Taiwan

Presidents thank Honnold for putting Taiwan on world stage

Perfect conditions allow for problem-free climb during televised event

Another attempt to scale the tower without ropes will be made Sunday

Athlete encountered wet conditions during test climb on Wednesday

He says shape of building makes it safer to climb with balconies on every 8 floors

Free climber says most challenging phase will be 8 overhanging segments