Hex-Chain

Hex-Chain is an arithmetic-trace puzzle. Each tile is a number; each edge is an operator. Walk a path that lands on the target.

Goal

Build a chain that evaluates exactly to the target number shown above the board.

Controls

• Tap, click, or press a tile controlStart your chain on that tile
• Drag or choose an adjacent tileAdd it to the chain — the edge operator applies between the two tiles
• Drag back or choose the prior tileUndo the last step
• Lift after dragging or choose Submit chainScore the chain

Scoring

• Hit the target exactly → ⭐⭐⭐ + chain-length bonus
• Within 1 of the target → ⭐⭐ partial credit
• Within 5 → ⭐ small consolation
• Longer chains multiply your score (up to 5×).

Tips

• Expression evaluates left-to-right with NO operator precedence — `2 + 3 × 4` is 20, not 14.
• Subtraction edges can take you below zero — sometimes that's the only way to land on the target.