Puzzle Boys is a Japanese Disk Writer-compatible game for the NES. Disk Writer was an add-on accessory for the system that allowed for larger game data storage compared to standard cartridges.  The puzzle-solving nature of the game suggests gameplay involving solving puzzles using some type of visual or logical method. The specific puzzle mechanics and developer require further research.

Puzzle Boys (Japan) (Disk Writer)

Puzslot (Japan)