Number Logic Puzzle 12154

Type: Sudoku, Rectangular Blocks
Size: 16
Points: 155, Penalty:0, Time : Initializing..  
1234
5678
9ABC
DEFG

Rules:

The goal is to fill a grid with digits so that each column and each row contain the digits only once.

This puzzle has Rectangular Blocks. Every block contains each of the digits only once.