Grandmasters is a collaborative studio album by American Los Angeles–based record producer DJ Muggs and New York–based rapper GZA. It was released on October 25, 2005, via Angeles Records, serving as Muggs' first in his "DJ Muggs vs." series and GZA's fifth album. Produced entirely by Muggs, it features fellow Wu-Tang Clan members and affiliates Raekwon, RZA, Masta Killa and Prodigal Sunn, as well as Cypress Hill's Sen Dog. The project has a theme of chess as can be seen by the names of the tracks, and the album itself. Introductions featuring chess strategy, including instruction for a chess opening using algebraic notation, are within the album. The album was also released in 'Instrumentals' and 'Remix' versions. The latter containing a bonus DVD featuring world tour and studio footage.