Play classic chess on Steam: challenge AI opponents, invite friends online, solve puzzles, customize your board, and unlock achievements.

Public builds
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Counted once we have watched for 90 days (since 21 Oct 2026)
Distinct builds deployed to a game's public (default) Steam branch, as Steam's client network describes them.
Checked within minutes of each Steam change. Observed since 21 Oct 2026.
Source: Steam client network (PICS), App info, public branch. Full methodology
Latest public build
Build 24831418
Update posts
3 postsPosts announcing an update, tagged or not
Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.
Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology
Typical gap between builds
Not enough builds yet| Build | Went live | Patch notes |
|---|---|---|
| 24831418 | August 20 Patch: 361 New Puzzles & Windows Fullscreen |
From Steam’s client network, last checked . Builds before 21 Oct 2026, when we started watching, aren't listed. Patch notes are the developer’s update post from an hour before to a day after the build. Not every build gets one. How we count
| Posted | Update |
|---|---|
| 20 Aug 2026 | August 20 Patch: 361 New Puzzles & Windows Fullscreen Patch notes |
| 21 Jun 2026 | Chess Summer Update: Play Online With Friends Patch notes |
| 22 Dec 2025 | Christmas Update 🎄 Patch notes |
| 12 Sept 2024 | Release Notes - September 12 Patch Patch notes |
| 27 Aug 2024 | August 27 Patch Patch notes |
| 23 Jun 2024 |
| June 22 Patch Patch notes |
| 5 Jun 2024 | June 5 Patch Patch notes |
| 31 May 2024 | May 31 Patch Patch notes |
Steam keeps no record of past build numbers, so before 21 Oct 2026 a game’s update history comes from its own Steam news: posts tagged as patch notes, and untagged posts that plainly announce a patch or a released update. Older posts are still being read in, most played games first. How we count