SyzygyCheck v2.2.0

Multilingual Windows integrity checker for Syzygy chess tablebases.

SyzygyCheck uses the original tbcheck by Ronald de Man as its verification core and builds a multilingual interface, thread selection, live progress, checkpoint/resume, diagnostics and reporting around it.

Download and code signing

Downloads are published on the GitHub Releases page: https://github.com/hpoiters/SyzygyCheck/releases

Code signing for SyzygyCheck is provided by the SignPath Foundation.

Highlights

• Choice between the control folder only [default] or the control folder plus all subfolders.
• Parent folders are never scanned; symbolic links are not followed outside the control folder.
• Whole-drive scans skip the Windows volume metadata folders $RECYCLE.BIN and System Volume Information.
• English, German, Dutch, French, Spanish, Chinese and Russian.
• Automatic logical-processor detection.
• Thread choice: all / half (default) / custom.
• Effective verification throughput and remaining time.
• Checkpoint/resume with preservation of confirmed FAIL results.
• Diagnostic onboard self-test before the real scan.
• End-of-run report destination choice: Desktop (first-run default), control folder or an Explorer-selected folder.
• Reports are collected in a language-aware result subfolder (CheckResult in all Western interface languages).
• The last selected report destination becomes the Enter-default for the next run.
• Scope and report menus wrap safely with the resized console, including long saved paths and CJK cell widths.
• Every reported FAIL/ERROR includes the full path from the Windows drive letter.
• Detailed result report and recovery guides.

User release structure

The downloadable user ZIP is required to contain these four root items:

• !SyzygyCheck_v2.2.0.exe
• 1_READ_FIRST_AL.txt
• Docs_AL/
• Program_AL/

The package must remain together. FAIL/ERROR reports name an exact recovery path under Program_AL. Developer source is not included inside the user ZIP. The clearly named SyzygyCheck_v2.2.0_SOURCE.zip release asset is the recommended source download; GitHub's automatically generated tag archives remain available too.

Verification core and credit

Based on the original Syzygy tablebase verification code by Ronald de Man.

Upstream project: https://github.com/syzygy1/tb

The AL layer does not reimplement the checksum logic.

Windows Terminal note

During a real scan SyzygyCheck makes a best-effort attempt to disable SC_CLOSE for a classic Windows console host. The outer X of Windows Terminal belongs to Windows Terminal itself and can still close the window. Checkpoint/resume remains the dependable protection against losing already confirmed progress.

Preserved baseline

The unchanged v2.0.9 V9F release remains available as the first practically validated baseline. Its validation completed 57/57 files (20.22 GB) with 11 workers in 27 seconds, averaging 777.4 MB/s effective verification throughput, finding exactly the two intentional checksum FAILs and 0 read/process errors. The onboard diagnostic TEST-FAIL also passed.

See 1_READ_FIRST_AL.txt, README_AL.txt, README_EN.txt, README_NL.txt, RELEASE_NOTES_v2.2.0.txt and the language-specific guides for details. RELEASE_POLICY.md records the mandatory build, post-build consistency and pre-publication package checks. RELEASE_CONSISTENCY_CHECK_v2.2.0.txt records the completed check for this repair.