While your examiners might feel inscrutable at times, they aren’t Sphinxes.
Questions aren’t obscure, topics aren’t hidden, and the purpose isn’t a game…
Some examiner questions could be anticipated, but not all. While they might be tricky to answer, you can take your time. You’ll have your thesis with you too, a resource to give you lots of information at your fingertips.
And finally, if a question in the viva might feel like a riddle or a challenge, remember it might not have a single right answer. In some cases it will have only the best response you can give.
Maybe a response that only you can give.