ɛkstʃˈeɪndʒɪŋ ðə bˈɪʃəps wɪð θˈɜːtiːn...bˌiːbˈiː fˈoːɹ, lˈiːdz tə ðə wˈiːkənɪŋ ʌvðə dˈɑːɹk skwˈɛɹz ˈæftɚ fˈoːɹtiːn.bˌiːˌɛksbˈiː fˈoːɹ kjˌuːˌɛksbˈiː fˈoːɹ fˈɪftiːn.ˌeɪ θɹˈiː kˈiː sˈɛvən sˈɪkstiːn.ɹˈæk wˈʌn zˈiəɹoʊ dˈæʃ zˈiəɹoʊ sˈɛvəntˌiːn.kjˌuːsˈiː sˈɛvən! wɪð ɐn ʌnplˈɛzənt ɡɹˈɪp.
Exchanging the bishops with 13...Bb4, leads to the weakening of the dark squares after 14.Bxb4 Qxb4 15.a3 Qe7 16.Rac1 0-0 17.Qc7! with an unpleasant grip.)