The spelling of the surname "Pachucki" is quite unique and can be a bit tricky to pronounce correctly. The first syllable "Pa" is pronounced like "pah" and the second syllable "chucki" is pronounced like "chuh-ki". The "ch" sound is similar to the "tch" in the word "kitchen". Overall, the IPA phonetic transcription for "Pachucki" is /pɑːˈtʃʌki/. Despite its complexities, this surname has a rich history and is common among Polish and Slavic communities.