Logic Masters Deutschland e.V.

Normal sudoku rules apply. Numbers in cages must be triangular numbers when read from left to right.

The list of the first triangle numbers is available at this link https://oeis.org/A000217 and is reproduced here: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666, 703, 741, 780, 820, 861, 903, 946, 990

F-puzzles: The Bermuda Triangle

CTC: The Bermuda Triangle