Archive · Zip #27

Zip #27 (October 22, 2026): solution and route

The 7×7 Medium puzzle from Thursday, October 22, 2026. Play it first; the route and the solved path are folded below. Replays don't affect your streak.

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Zip #27 was the 7×7 medium board of Thursday, October 22, 2026: 11 numbered dots, 6 walls, and one path that visits all 49 cells in order. Our solver, a line-for-line port of the app's, needed 959 search nodes to prove the path unique, which puts the board at 5 of 5 on the difficulty scale. Along the answer, 58% of the moves had only one legal continuation; the other 20 steps offered a real choice, and those are where you have to look ahead. The path turns at 57% of its cells, and its longest straight run is 7 cells. The longest leg, between two consecutive dots, is 12 cells.

Zip #27 in numbers

Board7×7, Medium
Numbered dots11
Walls6
Cells on the path49
Solver search nodes959 (5/5)
Moves with a single legal continuation58%
Decision points20
Turns along the path57%
Zip #27 route, dot by dot

How many cells each leg takes and which way it runs, reading from dot 1. “Right 3” means three steps to the right.

LegCellsDirections
1 → 212down 1, right 1, up 3, left 1, down 1, left 1, up 2, right 1, up 1
2 → 32left 2
3 → 41down 1
4 → 510down 3, right 1, down 1, left 1, down 1, right 3
5 → 66right 3, up 2, left 1
6 → 76down 1, left 1, up 3, right 1
7 → 83down 1, right 1, up 1
8 → 91up 1
9 → 103left 3
10 → 114up 1, right 3

Where the choices are: step 2 at row 6, column 3 (2 ways), step 3 at row 6, column 4 (2 ways), step 4 at row 5, column 4 (2 ways), step 5 at row 4, column 4 (3 ways), step 6 at row 3, column 4 (2 ways) and step 7 at row 3, column 3 (3 ways) and 14 more. Everywhere else only one move keeps the board solvable.

Zip #27 solution

The number in each cell is its position on the path; the dots keep their own numbers and are highlighted.

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