# Don't bully your cousin at Reversi

Title (only) inspired by Don't bully your little sister at chess

## Prologue

Well, this happened when I played Reversi with my cousin a few days ago...

I, not being as nice as @Arnold :P, I decided to continue to bully my cousin, but to cut her pain.

## Rules

• Each move, no matter white or black, must capture pieces
• This is a circumstance where your enemy is not a perfect logician, (like my cousin XD), so you may assume that your opponent is helping you.
• You can choose beinhg white or black.

## The Puzzle

Create a circumstance of X-0 or 0-X with minimum X.

## Tier-breaker

Less steps needed wins

## OP's Words

is temporary. Please feel free to retag for me. Thanks!

• Welp, I already know someone solved this before and probably the least we could do... – athin Aug 13 '19 at 13:09
• Thanks for the reference :) nice problem! It's a pity that the solution can be found online as @athin pointed out. – Arnaud Mortier Aug 13 '19 at 14:56
• Well in fact I'm not completely sure I understand the question, because if it means what I think it means, then there can be no tie-break as indicated: the amount of steps needed is always equal to X-4. – Arnaud Mortier Aug 13 '19 at 15:41
• @Arnaud really? if so, can you prove it while providing the answer? i'll give you the checkmark then :) – Omega Krypton Aug 13 '19 at 15:45
• – Arnaud Mortier Aug 13 '19 at 15:56

After each move, the total amount of stones (black or white) increases by $$1$$ (and so does the amount of moves!). Since there are four stones on the board before any move is played, it follows that a score of $$X:0$$ can only be reached after $$X-4$$ moves. Therefore there will never be a tie-break in the way that is indicated in the rules.
$$13:0$$ after $$9$$ moves