Logic Masters Deutschland e.V.

This puzzle doesn’t have a link, feel free to skip my puzzle, you won’t miss anything.

Standard sudoku rules applies. Fill the grid with numbers from 1 to 9 so each digit occurs exactly once in every row, column and 3x3 box.

Every digit inside the grid is a skyscraper, the height of which is defined by the value of the digit.

Clues outside shows the number of roofs one can at the top of the first skyscraper in the first X digit, where X is the value of the first digit. Higher buildings hide the lower buildings roof behind. In other words, count skyscrapers from the second digit, except higher building has longer view.

That’s a year ago, i can’t believe this is this long ago. I only remember this one is easier to set than the previous one, because i skip some possibility, which make the puzzle solves harder, even though i don’t think so. Now i solve it, i still feel the same.

Considering this puzzle is one year old, it’ll take another year to post my recent puzzle, i might as well gather my thought on this variant. X-sum is , so easy to think, it can fit everything. But at the same time, it’s lazy for me to go into that zone. X-sum can reduce the difficulty into a normal level, but the clues will be more random, uncontrollable. Starting from the second cell can greatly reduce the restriction inside the first cell, which is prefect for x-sum. I only try the non-calculation variant. Calculation is in another variant, which might be post some time later when i notice that puzzle. Anyway, this is one of the example i use my layer theory to write rules. I remember it being way too easy to think i bench it for a long time.

Another thing on this puzzle, there’s actually a naming plan. I was going to called it look far building(chinglish) and 2.0 or for real, as i think of a famous line, ‘You will enjoy a grander sight if you climb to a greater height’(On the Stork Tower, Wang Bo, translated by Yuanchong Xu). also it can be called sentry tower, but too wary for me. At last, we settled for gate house, it’s a common type of building in Beijing. Anyway, there’s no way i called this first X second start skyscraper. 000huh