Planet Stones / Navaratnalu

How to play

A single-player coin-placement puzzle on a five-pointed star board, companion to Six Stones / Aaru Gundu. Ten points — five outer tips and five inner crossings — sit on five straight lines. Pick an empty point, count three points along one of its lines, and if the third point is also empty, place a Navaratna gem there.

Rules

  • Tap any empty point to select it as your starting point.
  • Highlighted points show where a gem can land — three points away (counting the start as the first) along one of that point's two lines.
  • Tap a highlighted point to place a gem there — your starting point stays empty either way.
  • Fill 9 of the 10 points to win; if no empty point has an empty landing left on either of its lines, you're stuck.

Tips

Every point sits on exactly two of the five lines, so it offers up to two possible landings — think ahead about which points you're about to lock yourself out of. Undo is unlimited, so it's safe to try a line and back out if it dead-ends.