BUTTERFLY SPECIAL BOARD
Level Analysis & Solution Strategy
C13 Butterfly features four wing lobes. High opening exit ratio (23.4%) makes it a delightful speed-solving board.
Butterfly Level (C13): Board Solution & Analysis
Symmetrical butterfly wings with antennae pointing upward.
Board Specifications
| Attribute | Specification | Strategic Note |
|---|---|---|
| Arrow Count | 64 arrows | Requires structured perimeter sweeps |
| Grid Dimensions | 42×42 | Compact tight grid |
| Opening Free Exits | 15 arrows (23.4%) | Immediately playable on turn 1 |
| Solvability Status | 100% Machine Verified | Every stuck position is a reading error |
Opening Strategy & Walkthrough
1. Initial Border Sweep
Clear upper antennae and lower wing tips. They point directly off the 42×42 boundary.
2. Key Blocker Obstacle
The central body axis holds vertical arrows that lock upper and lower wings together.
3. General Arrow Logic Rule
An arrow leaves the board only when every cell between its head and the outer edge is clear of non-removed arrows. Removing one arrow unlocks the lanes behind it.
Frequently Asked Questions
Is C13 Butterfly good for beginners?
Yes, it is one of the most accessible 42×42 boards.