Why is it impossible to provide an undisputed description of the battle ?
Based on Georgian sources , P.M. Tarchnichvili suggested in 1964 that the victory of Phokas took place at a site called " Sarvenis " in Georgian , which he identified as Aquae Saravenae , north of Caesarea ( modern Kırşehir ) , and that Skylitzes 's third battle ( who erroneously places Pankaleia near the river Halys , which corresponds to the site of Kırşehir ) is a fictionalized mixture of the real first and second battles , a view shared also by John Forsyth in his 1977 critical edition of Yahya 's chronicle in English .