---
title: Cross-Check a Rectangular Jigsaw's Sorted Border Pieces — Free
description: Before searching the floor for a lost corner, check whether the sorted edge pile matches the actual piece grid. Keep an excess count distinct from a short count, and handle narrow puzzles without double-counting corners.
category: family
last_verified: 2026-10-01
freshness: green
published: 2026-10-01
canonical_url: https://gratis-ai.pages.dev/articles/jigsaw-border-inventory-crosscheck.html
companion_app_url: https://gratis-ai.pages.dev/apps/jigsaw-border-inventory-crosscheck.html
reading_time_minutes: 10
tags: family, jigsawborder, local-first, explicit-assumptions, no-account
---

# Cross-Check a Rectangular Jigsaw's Sorted Border Pieces — Free

Before searching the floor for a lost corner, check whether the sorted edge pile matches the actual piece grid. Keep an excess count distinct from a short count, and handle narrow puzzles without double-counting corners.

**Free and complete.** This guide is a standalone free tool — no account, no card, anywhere. The only paid option is one optional extra outcome: $4 one-time. Nothing in the free tier is gated.

## Who it's for

Families checking sorted jigsaw inventories

## What's free

- one complete unwatermarked puzzle-edge stub run in the app
- three labeled samples and unlimited article-demo calculations
- complete result text and a user-triggered input-state link

## Optional paid add-on

**$4 one-time.**

- unlimited subsequent puzzle-edge stub app calculations after a local convenience signal
- print the puzzle-edge stub with visible assumptions and its safety boundary
- CSV of the displayed pieces absolute discrepancy and row workings; conditional estimate uses your manual-retyping minutes
- five local reading summaries (headline/count/time), not saved full inputs or cross-device backups

## Sources & verification

- Tool: GratisAI local-first instrument (no key, no account)
- Primary source: the free tool itself (local-first, no external dependency)
- Last verification: 2026-10-01 (green)

## Use it

- Interactive guide: https://gratis-ai.pages.dev/articles/jigsaw-border-inventory-crosscheck.html
- Companion app: https://gratis-ai.pages.dev/apps/jigsaw-border-inventory-crosscheck.html
- This machine-readable mirror: /mirrors/jigsaw-border-inventory-crosscheck.md

*Generated free at https://gratis-ai.pages.dev/articles/jigsaw-border-inventory-crosscheck.html — every guide on GratisAI is a complete, working tool. $0, no account, no card, anywhere.*