The Cast Slider, part of the renowned Hanayama Cast Puzzle series, was designed by Finnish designer Vesa Timonen. Known for his minimalist yet intricate designs, Timonen based the Slider's concept on the mechanisms of sliding locks. The puzzle appears simple but requires a clever understanding of how the interlocking pieces move within confined spaces. Rated at 3 out of 6 stars in the Huzzle collection and a difficulty level of 7/10, it provides an engaging challenge for puzzle enthusiasts looking for a compact yet tricky experience. Its elegant design makes it both a brain teaser and a visual delight, fitting right in with the more difficult puzzles in the series.