Logic Masters Deutschland e.V.

Third puzzle of my Linked Sudokus series, exploring multi-grid puzzle. Hope you enjoy solving the puzzle!

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Rules:

Normal 4x4 sudoku rules apply for each grid.

Each circle is an outside clue for both adjacent grids with the value to be determined.

Additionally, the values from 1-4 must appear at least once in the circles, but values can be bigger than 4.

Numbered Rooms: Clues outside the grid for top left grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.

Numbered Sums: Clues outside the grid for top right grid indicate the sum of N and the digit in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.

Numbered Differences: Clues outside the grid for bottom left grid indicate the difference of N and the digit in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.

Numbered Products: Clues outside the grid for bottom right grid indicate the product of N and the digit in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.

For clarification, if N=1, Numbered Rooms value is 1, Numbered Sums value is 2, Numbered Differences value is 0, Numbered Products value is 1.

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Puzzle Link: SudokuPad

For solution check, fill in all of the 4x4 sudokus and outside clues with values less than 10.

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My youtube channel on solving sudoku: Crusader Puzzle