an Israeli American computer scientist, MBA, independent consultant in marketing analytics, and chess composer. Along with Lewis Stiller, Gady Costeff is co-author of the free Chess Query Language (CQL), which uses SCID code by Shane Hudson .
- Gady Costeff (2004). The Chess Query Language: CQL. ICGA Journal Vol. 27, No. 4 pdf
- Gady Costeff (2006). How I Became A Great Composer. (EG Volume 11 159-163 ARVES 2006) pdf