• tsir1962
    Translate Original Version
    Hint:
    [1,(4-7,17-18)],
    [3,(4,6,8-9,16-17,19)],
    [6,{5,8-11,15-16,18-19}],
    [12,{1-4,6-7.11-13,16}],
    [15,{10-11,14-16}],
    [16,12-15],
    [19,{3,7-13}],
    [20,{1-3,7-14}].
    October 8, 2016, 10:08 pm
  • JeremyNo
    Translate Original Version
    It is difficult, but logical. Thanks!
    November 1, 2017, 2:43 pm
  • littlebitocd
    Translate Original Version
    Don't give into the hints. It's completely logical on its own!
    August 13, 2018, 5:52 am