PUZZLE NO. 137 : Double Sandwich Sudoku

RULES : Classic sudoku rules apply. Clues outside the grid indicate the sum of the digit(s) placed between the digits 1,5 and 9 in the respective row or column in the correct order. The order of the digits 1,5 and 9 is not given.
Note : This sudoku featured on the youtube channel Unshackling Sudokus & Puzzles. The link to the video can be found here Methodology to solve Double Sandwich Sudoku?

PUZZLE NO. 129 : Creasing Sudoku

RULES : Classic sudoku rules apply. Along the grey lines, digits are strictly increasing or strictly decreasing according to the direction in which they are read.
Note : This sudoku featured on the youtube channel Unshackling Sudokus & Puzzles. The link to the video can be found here Keep chipping away at this Creasing sudoku until it crumbles !

PUZZLE NO. 110 : Odd Even Bridge Sudoku

 RULES : Classic sudoku rules apply. Some circled cells are connected by a bridge.
               An odd digit in a circle equals the number of odd digits on the bridge. An even digit in a circle equals the number of even digits on the bridge.
               The digits on the circle are not counted.
Note : This sudoku featured on the youtube channel Unshackling Sudokus & Puzzles. The link to the video can be found here How to solve this Odd Even Bridge Sudoku