But is it considered ok in response to such a question to reveal a fact you have deduced not only from the clue, but from looking at other people's hands? For example, if someone has clued me 5 and later asks me what I know about my hand, and I can see say one 5 played and 3 5s in other people's hands (clued or not), is it ok for me to say I have deduced what colour my 5 is?
Or further, is it considered ok to volunteer that information. Eg. same scenario but towards the end-game and I know some players will be thinking about cluing me the colour of the 5 when I already know what colour it is. Can I just say in chat something like 'Hey, for info, I know my 5 is white?'
Either way, this kind of comment might tell another player something they don't already know - like they must have a 5 in their hand they haven't been clued about yet.
I can see views for and against, personally, and just wondered if there is a BGA main attitude on this?