Each row, column and 2x2 box contains the digits 1 to 4 once each.
Digits on a thermo must increase from the bulb end.
Renban: a purple line must contain a set of non-repeating consecutive digits.
You can play Easy Doubles, Thermo Arrow on f-puzzles or CtC.
Solution code: All digits in the first row from left to right
on 23. January 2024, 19:26 by SimplePurpleFrog
Link to Mildly Spicy series
on 20. January 2024, 01:29 by SimplePurpleFrog
Link to Anti Knight - Thermo
on 15. January 2024, 20:50 by Cipher Savant
Really nice puzzle, I enjoyed this one, thanks!
on 29. November 2023, 03:24 by SimplePurpleFrog
Link to Little Killer
on 27. October 2023, 05:44 by Tingo
Yet another fun bite-sized puzzle. Thanks for creating these!
on 22. October 2023, 02:52 by SimplePurpleFrog
Added link to RC indexing
on 21. October 2023, 20:18 by ViKingPrime
I think this is an excellent tutorial series. Keep up the fine work!
SPF> Thank you, I feel honoured to receive such praise, and especially from a great solver and setter like you.