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Did as you suggested - no go. Anyway not a problem as Stockfish is good enough for me. Thanks for all your help.

Okay great stuff Michael B - much appreciated. I have a few games to look at then will follow your recommendations.

Nope - this is what I get .. Last login: Tue Apr 5 06:31:24 on ttys000 iMac:~ maxdeg$ /Users/maxdeg/Desktop/SugaR-2.5 dyld: lazy symbol binding failed: Symbol not found: __ZNSt6thread20hardware_concurrencyEv Referenced from: /Users/maxdeg/Desktop/SugaR-2.5 Expected in: /usr/lib/libstdc++.6.dylib dyl...

Thanks for the Mac compile.

ChessX GUI says its not a valid UCI engine. MacOS is up-to-date also made sure that permissions are okay.

As a matter of interest I compiled the latest Stockfish development version - runs okay.

Any ideas ?

Thanks for the Mac compile ..