Case file LinkedIn Patches #107: 7×7 tiling puzzle, 20 clue exhibits, area range 2–4 cells per patch. Full partition: 20 rectangles tile the 7×7 grid (49 cells): clue 1 → 1×2, clue 2 → 1×2, clue 3 → 3×1, clue 4 → 2×1, clue 5 → 1×2, clue 6 → 2×1, clue 7 → 3×1, clue 8 → 2×1, clue 9 → 2×1, clue 10 → 2×2, clue 11 → 1×3, clue 12 → 2×1, clue 13 → 2×1, clue 14 → 2×1, clue 15 → 2×2, clue 16 → 2×2, clue 17 → 2×1, clue 18 → 1×2, clue 19 → 1×2, clue 20 → 1×2. No overlap, every clue covered exactly once. Pattern tag: shape-locked board.
Board spotlight: Most clues specify a strict shape icon (square, tall, or wide) — shape constraints often pin down dimensions before you can draw anything. With 8 of 20 clues showing a numbered area, dimension math often pins down rectangle size before you choose a position on the grid.
General Patches strategy on 7×7: rectangles cannot overlap, every cell must belong to exactly one patch, and each patch must contain precisely one clue at its anchor cell. When a clue shows area 12 and a tall icon, only a few height×width pairs are legal — list them before drawing. After each placement, mentally partition the leftover white space: if any region cannot host its remaining clues, back up and try the next candidate.
Exhibit 1: clue 1, 1×2 at Row 1, column 1. The shape icon requires a wide rectangle (wider than tall). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 2: clue 2, 1×2 at Row 1, column 3. The shape icon requires a wide rectangle (wider than tall). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 3: clue 3, 3×1 at Row 1, column 5. The shape icon requires a tall rectangle (taller than wide). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 4: clue 4, 2×1 at Row 1, column 7. The shape icon requires a tall rectangle (taller than wide). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 5: clue 5, 1×2 at Row 2, column 2. The clue shows area 2, so its patch must cover exactly 2 cells (1×2 = 2). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 6: clue 6, 2×1 at Row 2, column 4. The clue shows area 2, so its patch must cover exactly 2 cells (2×1 = 2). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 7: clue 7, 3×1 at Row 1, column 6. The clue shows area 3, so its patch must cover exactly 3 cells (3×1 = 3). The shape icon requires a tall rectangle (taller than wide). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 8: clue 8, 2×1 at Row 2, column 1. The shape icon requires a tall rectangle (taller than wide). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 9: clue 9, 2×1 at Row 3, column 7. The shape icon requires a tall rectangle (taller than wide). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 10: clue 10, 2×2 at Row 3, column 2. The clue shows area 4, so its patch must cover exactly 4 cells (2×2 = 4). The shape icon requires a square. Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 11: clue 11, 1×3 at Row 4, column 4. The clue shows area 3, so its patch must cover exactly 3 cells (1×3 = 3). The shape icon requires a wide rectangle (wider than tall). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 12: clue 12, 2×1 at Row 4, column 1. The shape icon requires a tall rectangle (taller than wide). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 13: clue 13, 2×1 at Row 5, column 7. The shape icon requires a tall rectangle (taller than wide). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 14: clue 14, 2×1 at Row 5, column 2. The clue shows area 2, so its patch must cover exactly 2 cells (2×1 = 2). The shape icon requires a tall rectangle (taller than wide). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 15: clue 15, 2×2 at Row 5, column 3. The clue shows area 4, so its patch must cover exactly 4 cells (2×2 = 4). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 16: clue 16, 2×2 at Row 5, column 5. The clue shows area 4, so its patch must cover exactly 4 cells (2×2 = 4). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 17: clue 17, 2×1 at Row 6, column 1. The shape icon requires a tall rectangle (taller than wide). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Exhibit 18: clue 18, 1×2 at Row 7, column 2. The shape icon requires a wide rectangle (wider than tall). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 19: clue 19, 1×2 at Row 7, column 4. The shape icon requires a wide rectangle (wider than tall). Several rectangles fit this clue on their own, but only this one still allows the whole grid to be tiled.
Exhibit 20: clue 20, 1×2 at Row 7, column 6. The shape icon requires a wide rectangle (wider than tall). This is the only rectangle that fits the clue, avoids other patches, and still allows a full tiling.
Verdict: tiling set is consistent with every clue constraint. Case closed.