A game in which the player must match pairs of words to win.  Takes two
players to play and can be played against either another person or against
the computer.  Source available from authors.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  247     624  39.6% -lh5- 3889 Mar 22  1992 Concentration.info
[generic]                70027   75444  92.8% -lh5- 936a Mar 22  1992 Concentration/Concentration3.3
[generic]                  407    1122  36.3% -lh5- 9a9a Mar 22  1992 Concentration/Concentration3.3.info
[generic]                  130     170  76.5% -lh5- 9cca Mar 22  1992 Concentration/ReadMe.fnf
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files   70811   77360  91.5%            Mar 22  1992