The Worlds Best Chess Player. Bragging pays off! Now Marco's chess skills are in demand. The Prince of Isfahan surprises Marco, Shi La and Luigi with his collection of mechanical devices. Including a chess machine that Marco must win against. Otherwise, the journey of the three friends could be interrupted for a long time. A chess book by a famous scholar could help. Strangely enough, that has disappeared from the library. Now Marco and his friends have to plan the right move themselves so that they don't get checkmated.