In Italian, ch makes a strong k sound, so fianchetto is pronounced something like "fee-an-keTTo" with the double tts adding emphasis as well.
Fianchetto pronunciation can be felt backwards throughout time for anyone Italian.

-- Webster's Third New International Dictionary Unabridged (print) gives "ch" as in "chin" as first pronunciation.
-- However, Webster's Second International (1944), unequivocally says "k" as in "kiss." The 2nd's phonetic symbolization is (as close as this font comes) "fyäng•kět'tō." Webster's 2nd is regarded by pedants as the True Cross of English dictionaries, so I defer to it. Learn something new!
Fyan Ketto, Fion Keyto or something never found out what it was but I knew what it was on the board. Today, I saw my engine calling this position “fianchetto” an Italian world which you would pronounce something like “Feiaansheto” in English.
Pls stop. Thanks