https://www.youtube.com/watch?v=4GK0bWCsTgM
原标题：FIghting with the Cages!
Blabarskaka 的“耦合笼”
规则：适用标准数独规则。任何被马步（国际象棋中）分开的两个单元格不能包含相同数字。在笼中，数字之和必须等于笼左上角的提示数。笼内数字不得重复。黑点两边的一个数字是另一个的三倍。
链接：https://sudokupad.app/72xo00v9n2
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Here's where you can try Coupled Cages by Blabarskaka: https://sudokupad.app/72xo00v9n2
Normal sudoku rules apply. Any two cells separated by a knight's move (in chess) cannot contain the same digit. In cages, digits must sum to the small clue in the top left corner of the cage. Digits cannot repeat within a cage. On a black dot, one digit is three times the other.
