# MatchBench guides and demonstrations

Learn MatchBench tasks, handle common problems and practise with checked demonstrations using sample data.

Source: https://help.smartfact.ai/matchbench

Read a guide below, or use the help page to ask a general product question. Interactive demonstrations run on desktop and laptop computers. Written instructions work on any device.

## Guides and help pages

- [Change references without rewriting history](https://help.smartfact.ai/matchbench/guides/changing-reference): Create a second group and compare against its reference.
- [Understand a copied reference](https://help.smartfact.ai/matchbench/guides/copied-reference): Copy a comparison deliberately, preserve its manual provenance and keep earlier checks.
- [Compare two identical values](https://help.smartfact.ai/matchbench/guides/exact-comparison): Set a complete reference and check a known exact match.
- [Download, save and restore safely](https://help.smartfact.ai/matchbench/guides/save-and-restore): Use real CSV, PDF and project downloads, an isolated device save, and accepted or refused project imports.
- [See an extra space](https://help.smartfact.ai/matchbench/guides/space-mismatch): Keep the exact space visible and inspect the mismatch.
- [Keep leading zeroes and retain corrections](https://help.smartfact.ai/matchbench/guides/zero-correction): Find a missing-zero mismatch, record a corrected check and retain both observations.