Re: If Rechard was
The use of "If he was there" only suggests that either the speaker doesn't know for sure that he was there, or that someone else has said he was there and the speaker is making an assumption based on that statement.
If A is true, then B must be true.
If the speaker knew for a fact that Rechard wasn't at the reception, he would have said:
If Rechard had been at the reception, he would have been presented to the president.
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.