Sentinel with Tandy mode working.
 

I believe everybody is familiar with "Sentinel", a puzzle game by Geoff Crammond.

https://www.mobygames.com/game/dos/sentry_

However, there seems to be only one PC version online, and its Tandy mode is not working.

Does anyone have a different version?

Checked. No luck. :( All versions are identical (only some sources have packed .exe, but unpacking it gives file identical to other version). Sorry.

Thanks for checking this one out.