Possible Clues:

• Chess champion of the early 1960s
• "¿Qué ___?" ("How's it going?")
• Jazz bassist Wilkenfeld
• __ vez: maybe, in Pamplona
• 'Qué ___?' ('How are you?': Sp.)
• Chess great Mikhail
• Former chess champion Mikhail
• 'Qué ___?' (José's 'How goes it?')
• Chess legend Mikhail
• "¿Qué __?": Spanish greeting