Psi Chess, (PsiCHESS) a commercial chess program for the ZX Spectrum 48K by Steven L. Watson and Jack Wilkes, released in 1986 by The Edge [1]. Psi Chess features 2D or 3D boards with Staunton or Lewis chess sets, various playing modes, and is aware of all chess rules including minor promotions, threefold repetition, the fifty-move rule and draw by insufficient material [2].
Psi Chess screen with 3D board [3]

Reviews

• Gwyn Hughes (1986). Psi Chess. Your Sinclair, No. 10, October 1986

External Links

• Psi Chess - World of Spectrum
  PsiChess.txt
• Psi Chess (ZX Spectrum), YouTube Video
  

References

1. ^ Gwyn Hughes (1986). Psi Chess. Your Sinclair, No. 10, October 1986
2. ^ PsiChess.txt
3. ^ image from Psi Chess - World of Spectrum

What links here?