New Site https://blog.stimim.tw (under construction)
Normal sudoku rules apply
Digits along an arrow must sum to the number in the circled cell(s)
F-puzzles: https://f-puzzles.com/?id=22seah3x
CtC App: https://tinyurl.com/yxjj2p2x
LMD: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000ELL