I solve LinkedIn Zip #501 checkpoint by checkpoint on a 7×7 grid. 8 numbers to hit in sequence, 16 walls to respect. My route breaks into 7 hops: 1→2 (8 cells), 2→3 (12 cells), 3→4 (3 cells), 4→5 (11 cells), 5→6 (8 cells), 6→7 (10 cells), 7→8 (3 cells).
Before the first stroke I mark walls and the next checkpoint — on this board that means Many blocked edges narrow your options early — map wall bottlenecks before tracing toward the next numbered checkpoint.
I draw hop 1 next — checkpoint 2 at R5C2 after 8 cells from R2C4. Open corridor — no walls on this hop.
I draw hop 2 next — checkpoint 3 at R2C6 after 12 cells from R5C2. Open corridor — no walls on this hop.
I draw hop 3 next — checkpoint 4 at R1C7 after 3 cells from R2C6. Open corridor — no walls on this hop.
I draw hop 4 next — checkpoint 5 at R6C4 after 11 cells from R1C7. Open corridor — no walls on this hop.
I draw hop 5 next — checkpoint 6 at R3C6 after 8 cells from R6C4. Open corridor — no walls on this hop.
I draw hop 6 next — checkpoint 7 at R7C1 after 10 cells from R3C6. Open corridor — no walls on this hop.
I draw hop 7 next — checkpoint 8 at R6C2 after 3 cells from R7C1. Open corridor — no walls on this hop.
Finished — every cell filled, no revisits, walls respected. Many blocked edges narrow your options early — map wall bottlenecks before tracing toward the next numbered checkpoint.