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 / OOM  | ABS
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Doug Torrance
profzoom@hotmail.com
http://www.pubweb.nwu.edu/~dat927/zoomlabs
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Concentration v1.3 for AShell83 v1.0
Jan. 3, 2000
Size - 1490 bytes

included in this .zip file:
concentr.z80 - the source
concentr.txt - this info file
concentr.83g - the game

The object of Concentration is to turn over all the cards on the table.  You turn over two cards at a time.  If the cards match, they remain face up.  Otherwise, they are put face down again.

Keys-
arrow - move
[2nd] or [ENTER] - turn over card
[MODE] - exit

Scoring-
For every set of two cards you turn over, your score increases by one--try to completely turn over all the cards in the least number of tries!

Version History-
various demos - posted on my website to show how Concentration was progressing
v0.9beta - first fully operational release, with source and readme included
v1.0 - full release!  improved the gameplay a bit (don't have to press 2nd after flipping over two cards to move on to the next pair) 
-optimized 141 bytes!  thanks to Sam Heald for 45 of these!
v1.01 - for Crash, utilizing Crash's built-in routines to make it a mere 1463 bytes!
v1.3 - now for AShell83! (also works with SOS)

Future Versions-
I may port Concentration to other calculators.

Acknowledgements-
-Sam Heald, Dines Justesen, Kouri, and OBD for their Blockbuster optimizations, which really helped me learn a lot - a lot of their code was adapted for Concentration
-Jeremy Wazny and Harper Maddox for their pointers on how to go about shuffling the cards

Thank you!




