olemus
Wiktionary:
1. anything that is difficult to understand or make sense of
2. a game for one or more people that is more or less difficult to work out or complete

ülevaateid
https://en.wikipedia.org/wiki/Puzzle

näiteid
- chess puzzle = maleülesanne
https://www.chess.com/forum/view/more-puzzles/collection-of-chess-puzzles
- crossword puzzle = ristsõnamõistatus
https://www.boatloadpuzzles.com/playcrossword
- logic puzzle = loogikaülesanne
http://puzzles.nigelcoldwell.co.uk/
- number puzzle = arvmõistatus
https://www.mathsisfun.com/puzzles/number-puzzles-index.html
- picture puzzle = piltmõistatus
https://puzzlersworld.com/puzzles/picture-puzzles/
- jigsaw puzzle = killumäng, pusle
- mechanical puzzle = nuputusvigur, ajukann

kogumikke
http://jnsilva.ludicum.org/HMR13_14/536.pdf