Logic Masters Deutschland e.V.

Fill the rows and columns of the 7x7 grid with the digits 1-7 without repeats. In addition, digits may not repeat in the 2x3 boxes.

The digit on the sandwich emoji is a sandwich sum clue. The sum of the digits between the least and greatest digit in that column of the inner 6x6 (not including those digits) is equal to the clue.

The digits on the X emojis are X-Sum clues. The first digit in the corresponding row or column of the 6x6 inner region is X, and the first X digits of the row/column of the 6x6 (including X) add up to the clue.

The digits on the noisemaker emojis are Parity Party clues. The clue is the sum of the first few digits going along that row/column of the 6x6 up to and including the first odd or even digit.

The digits on the skyscraper emojis are skyscraper clues. Imagine the cells in the 6x6 as skyscrapers. The digit is the height of the skyscraper. Taller skyscrapers block shorter ones from your view. The digit in the skyscraper clues are the number of skyscrapers visible in that row/column of the 6x6 from the vantage point of the clue.

Click the image to go to SudokuPad.

Here's a link to a harder version (just missing some clues) that I couldn't figure out how to solve.