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  • $\begingroup$ @BeastlyGerbil Sorry, to solve the puzzle $\endgroup$
    – CrSb0001
    Commented May 21 at 19:10
  • $\begingroup$ I believe the '10' clue can be left out, and it is still a valid hidato. Because 1-7 and 46-49 is forced, there is only one way for the 7 to leave the corner: there is no need for the 10 at that place. Leaves only 15 clues ;) $\endgroup$
    – Lezzup
    Commented May 21 at 21:48
  • $\begingroup$ @Lezzup Agreed, and you can also simultaneously remove 40, leaving 14 clues. $\endgroup$
    – RobPratt
    Commented May 21 at 22:59
  • 1
    $\begingroup$ I found a 8-clue 7x7 Hidato with unique solution. $\endgroup$
    – Bubbler
    Commented May 22 at 0:17
  • 2
    $\begingroup$ Now I've got one with 7 clues. The two puzzles can be found here. $\endgroup$
    – Bubbler
    Commented May 22 at 1:44