TrioNinePuzzle notes
This original practice board has nine words and three intended categories. Look for specific shared meanings rather than a broad association. It is part of TrioNine’s 38-puzzle collection, published October 1, 2026.
Words on this board: LCD, OLED, E-INK, PNG, JPEG, GIF, MP3, WAV, FLAC.
Reveal this puzzle’s three groups and explanations
Display technologies
LCD · OLED · E-INK
These are technologies for visual displays.
Image file formats
PNG · JPEG · GIF
These are raster image formats.
Audio file formats
MP3 · WAV · FLAC
These formats store digital audio.