Probability of playing black five times in a row agains the same opponent

Hi there,

I'm playing an OTB tourney and next Friday i'll play for the 5th time with this guy - a very techcnical, passive but solid player, playing the english oppening - and every single time I'm playing with the black pieces! What is the probability of that to happen?

And also, my score with him is: 3 loses, 1 draw and 1 victory. What, in your opinion, is the best black response for 1.c4?

Sorry for my lousy english

thank in advance for the answers

cheers

The probability is one chance in 32.  It is like what is the probability of flipping a coin and getting heads five times in a row.

The probability of being black 5 times in row is indeed 1 in 32. However, more relevant is the probability of being the same colour 5 times in a row, which is of course 1 in 16.

But my guess is that the original poster was not asking the chance of 5 blacks in a a row, but the chance of being drawn against the same person 5 times in a row - which is harder to answer.

1.c4 Nf6 and 2...e5 against everything but Nf3

What's the probability of u not abusing him after the game?

It depends since if you are playing in quads, both your ratings might not change a lot and you both end up playing each other over and over again.