little tableReversi
Finish with more discs showing your color. This Reversi implementation uses the familiar four-disc central start, compulsory flipping and automatic passes when a player has no legal placement.
Local AI practice · Private online room
Players: 2
Set up the table
Two players use an eight-by-eight board. The central four squares contain two black and two white discs on opposite diagonals. Black starts; there are initially four legal placements.
On your turn
Place on an empty square so at least one uninterrupted straight line of enemy discs lies between your new disc and an existing friendly disc. Flip every bracketed line, including horizontal, vertical and diagonal lines. A placement that flips nothing is illegal.
Winning and ending
If the opponent has no legal placement, you play again automatically. If neither side can play, compare the actual discs on the board: more wins, equal counts draw. Empty squares can remain.
Worked example
Count rows and columns from the top-left. In the initial position, Black plays row 3, column 4. The white disc at row 4, column 4 flips, giving Black four discs and White one; White plays next.
A common mistake
Do not flip an unbroken line unless a friendly disc closes its far end. Newly flipped discs do not trigger extra chain flips.
Questions at the table
May I pass while a legal move exists?
No. Passing occurs automatically only when no placement is legal.
Is the game over when one player cannot move?
Not necessarily. It ends only when neither can move.
Further rules references
External rules provide context; the implemented variant described above takes precedence here.