Tripod Sudoku - 1

Tripod Sudoku Puzzle type appeared in Oğuz Atay Puzzle Contest (OAPC)-5 championship and The Last Sudoku Competition Before World Sudoku Championship. To me, Tripod Sudoku looks more like a puzzle type than a Sudoku. 

Here are some of the Tripod Sudoku Puzzles created by me. Can you solve these Tripod Sudoku puzzles?

Tripod Sudoku - 1

Tripod Sudoku - 2

Tripod Sudoku - 3