Four variants for four times the Fun!

 Puzzle # 5: Thermo Palindrome Quadruple XV Sudoku!


Hello and Welcome Back! Now you've had a chance to do a few different sudoku variants, I think it's time to mix things up a little. So, my next challenge for you is a fun one as I've made a puzzle with not 1, not 2, not even 3! Nay! I've got a FOUR-variant puzzle for you - see below for how it works!


Rules:

- Apply classic sudoku rules

- VARIANT ONE - THERMO: Digits along a thermometer must form a strictly increasing sequence away from the round bulb

- VARIANT TWO - PALINDROME: Digits along a grey line read the same forwards and backwards

- VARIANT THREE - QUADRUPLE: Digits in a quadruple constraint must appear in 1 of the 4 surrounding cells

- VARIANT FOUR - XV: Digits separated by an X or V must sum to 10 or 5, respectively. NB: not all Xes or Vs are given.



https://tinyurl.com/25opmc42


Enjoy, and may the cookie crumble in your favour!


CC :)


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