Version 12 contained many changes, including a switch to bitboard architecture and the removal of variant support.

[8] The next iteration of the chess engine was named Deep Sjeng 1.0 and released as a commercial program on 3/3/2003.

It featured multiprocessor support and was estimated to be 200 rating points stronger than Sjeng Free.

[9] The last version of Deep Sjeng won the World Computer Speed Chess Championship in 2008.

Deep Sjeng actually tied for second place, however the winner, Rybka, was disqualified for plagiarism.