Connections
nytimes.com
Sixteen words, four secret groups, four mistakes allowed
Mind Benders
Numbers along the edges, a picture hiding in the grid
puzzle-nonograms.com
Coffee break · Works anywhere
Free, no sign-up · online since 2014
Nonograms are logic puzzles where clue numbers on each row and column describe the runs of filled squares, and careful deduction uncovers a small pixel image. Fresh grids appear daily from five-by-five up to twenty-five-by-twenty-five, with weekly and monthly specials.
The reward is the moment a half-finished grid stops being abstract and you suddenly recognise what it is you have been drawing.
Keep going
Picked for a shared category and overlapping vibe, not for popularity.
nytimes.com
Sixteen words, four secret groups, four mistakes allowed
flexboxfroggy.com
Learn CSS flexbox by getting frogs onto lily pads
puzzmo.com
A daily puzzle page designed by people who love puzzles
regexcrossword.com
Crosswords where every clue is a regular expression
semantle.com
Guess the word by meaning, not by letters
chiark.greenend.org.uk
Forty small logic puzzles, endlessly generated, no fuss