Attempt Number: 2
Error Message: square0 incorrectly remains in position f5-0f, overlapping with rightl0.

Diagram Encoding:
1. **rightl0 (L-shaped piece)**      - **Position:** Occupies positions f5-0f, f5-1f, and f4-0f.      - **Status:** Color is blue; outer edges are bold; occupied.      - **Text Identifiers:** "rightl0" positioned in each sub-square.2. **straight0 (Two-square straight piece)**      - **Position:** Occupies positions f0-2f and f1-2f.      - **Status:** Color is green; all edges are bold; occupied.      - **Text Identifiers:** "straight0" positioned in each sub-square.3. **square0 (One-square piece)**      - **Position:** Remains in position f5-0f.      - **Status:** Color is red; all edges are bold; occupied.      - **Text Identifiers:** "square0" positioned slightly higher in the square.4. **square1 (One-square piece)**      - **Position:** Remains in position f4-1f.      - **Status:** Color is yellow; all edges are bold; occupied.      - **Text Identifiers:** "square1" positioned slightly higher in the square.5. **Grid Cells (Unoccupied)**      - **Position:** Covers positions f0-0f, f0-1f, f0-3f, f1-0f, f1-1f, f1-3f, f2-0f, f2-1f, f2-2f, f2-3f, f3-0f, f3-1f, f3-2f, f3-3f, f4-2f, f4-3f, f5-2f, f5-3f.      - **Size:** Single unit for each grid cell.      - **Status:** Clear (no color).      - **Text Identifiers:** Each position marked with text (e.g., "f0-1f") located at the center of the square and labeled as "clear".

Diagram Code:
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