Logic Masters Deutschland e.V.

My first attempt at a proper Full Rank puzzle.

click to play in sudokuPad

Within the main 5x5 grid each row and column must contain each of the digits 1-5.

Each row forms two 5-digit numbers, one reading from left to right, the other from right to left. Similarly each column forms two 5-digit numbers from top to bottom and bottom to top. These numbers when sorted into ascending order each have a rank from 1-20 with 1 being the smallest and 20 the largest. There are no tied ranks.

Outside the grid the surrounding cells have a value equal to the rank of that row or column when read from that side.

Some cells have their value given at the top either directly or as a sum of two numbers. Some of these numbers have been replaced with letters. Each letter represents the same value wherever it appears. Each letter represents a different digit from 1-5.