jˈuːzɪŋ sˈiːdʒ ʌv bˈoʊdənbˌɜːɡ æz ɐ ɹˈɛfɹəns, dʒˈɛf pˈɛɹən dɪvˈɛləpt hɪz ˈoʊn sˈɛt ʌv mˈɛdɪˌiːvəl wˈɔːɹɡeɪm ɹˈuːlz, ænd ʃˈɛɹd ðˌɛm wɪð ɡˈæɹi dʒˈaɪɡæks, bᵻkˈʌmɪŋ tʃˈeɪnmeɪl.
Using Siege of Bodenburg as a reference, Jeff Perren developed his own set of medieval wargame rules, and shared them with Gary Gygax, becoming Chainmail.