MasterChess 9000 – Program Versions
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MasterChess is constantly under development to stay current with new engines, best practices, new versions of Windows, Macintosh, and the ideas from players who use it every day.
That said, it is risky to make the bug list available to the public. The vast majority of software publishers keep their bug list private so as not to discourage new purchases who might assume that the software has too many problems because everything known about the program is in this list.
I publish our bug list because:
I personally appreciate it when a software maker tells me about any known problems for programs that I want to purchase.
I think chess players are smart enough to realize that all sophisticated software has bugs, and that listing them publicly is my way of making sure you know it’s being worked on.
Thanks.

Mike Leahy, The Database Man!
| MasterChess 9000 Program | Latest Build | Released |
| Windows | Build 28 | January 31, 2026 |
| Macintosh | Build 25 | May 4, 2025 |
MasterChess 9000 Bugs
| Description | Resolution | Spotter | OS | Impact | Projection |
| Cannot run at the same time as Chess Openings Wizard | Mike | Win | Fixed in build 28 |
MasterChess 9000 Suggestions
| Description | Sponsor | Importance | Projection |
| Add a resign button. | Richard D. | low |
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