A marked square you must light to solve the level. Each world draws its own: stars in School, snowflakes in Ice, lightning rods in Storm, moons in Night. The level is solved when every target is lit at once.
Lit
A square is lit when a piece sits on it or covers it with its attack pattern. Lighting every target wins the level.
Self-lighting
The rule that a piece lights its own square, not just the squares it attacks. A piece dropped on a target always lights that target.
Beam
The line of light a sliding piece (rook, bishop, queen) sends out. It travels until it hits the board edge, a blocker, or another piece.
Coverage
Every square a piece lights: its own square plus its attack squares. Solving a board is about overlapping coverage onto every target.
Blocker
An obstacle (Lava) you cannot place on. It stops a beam before it and never lights up. Knights jump over blockers.
Void cell
A cell carved out of the board entirely. Nothing can stand on it and beams stop at its edge like a board edge. A handful of boards from Lava onward use them.
Frozen / multi-hit target
A target (Ice) that needs two different pieces covering it at once. One piece hitting it twice still counts as one.
Enemy
A fixed hostile piece (Storm). Its body blocks your beams and the squares it attacks become no-go zones you cannot place on.
Portal
A linked pair of tiles (Cosmos). A beam entering one exits its twin, still traveling the same way. You cannot place on a portal.
Reflection
On Beach, diagonal beams bounce off the board edge once, like a bank shot. Straight rook lines do not reflect.
Flashlight
On Night, the board goes dark and the piece you hold casts a pool of light that reveals the moons near it. Place every piece, then submit to fire the beams.
Tray / inventory
The set of pieces you have to place on a level. Solving with pieces left over earns a badge.
Hint
A nudge that shows the first move of a winning solution. You place the rest yourself.
Clean solve
Solving a level on the first try with no hint. Several badges reward clean and fast solves.