Video Chess (?-??-80)
This is a very interesting prototype for a number
reasons. First of all, it contains the 6K version of Video
Chess before it was stripped down to fit into 4K.
Secondly, it also seems to contain the early version of
Othello. As the label indicates, variations 1-10 are Video
Chess while 11-14 are Othello. What happens in reality
though is that once you go past the 10 Video Chess variations
the game jumps to Othello (its variations are still listed as
1-4 in the game). It is unknown if this combo cartridge
was made by an Atari employee for their personal use or if Atari
was planning on releasing a '2 in 1' cartridge using the new 8K
bankswitching technique they developed.
While Othello appears to be the same as the first released
version (without the board markers), the 6K version of Video
Chess has a number of differences from the final 4K
version. BTW the 64K on the label doesn't really mean 64
Kilobytes (which would have been impossibly huge at the time),
it means 64 Kilobits which is 8K. This was common notation
at the time.