Sand Blocks Level 403 Walkthrough
10/21/2026
Overview
Cascade engine required on Level 403. Full solution.
Step-by-step walkthrough
Level 403 requires a cascade engine — 9+ cascades per drop, consistently. Set up 4 same-color blocks in cross pattern, drop 5th → 5-way cascade (5 cells reclaimed per drop). Do this 11+ times per level. Cascade engine is the entire strategy at this tier — no fallback exists. Level 403 winnable in 22 drops with 11 cascades, unwinnable without.
💡 Pro tip
4-block cross + 5th = 5-way cascade. 11+ cascades per level. Engine mode.