How do you beat fill tracks level 4?

To beat Fill Tracks Level 4, focus on strategically placing your blocks to cover the most area while minimizing gaps. Prioritize filling in the larger sections first to create a solid base, and then work towards filling in smaller spaces. Pay attention to the color of the blocks, as using the right ones can help complete sections more efficiently. Lastly, plan your moves ahead to avoid getting stuck with unfillable gaps.