LinkedIn Patches 18 answer, 4 April 2026: a 5 by 1 rectangle at row 1, column 2; a 1 by 7 rectangle at row 1, column 7; a 3 by 1 rectangle at row 2, column 4; a 1 by 3 rectangle at row 1, column 1; a 1 by 3 rectangle at row 2, column 3; a 1 by 3 rectangle at row 1, column 8; a 3 by 3 rectangle at row 3, column 4; a 1 by 3 rectangle at row 5, column 3; a 1 by 5 rectangle at row 4, column 1; a 3 by 1 rectangle at row 6, column 4; a 1 by 5 rectangle at row 4, column 8; a 3 by 1 rectangle at row 7, column 4; a 1 by 7 rectangle at row 2, column 2; a 5 by 1 rectangle at row 8, column 3. Answered 07:00 UTC