Read the board, not the glitter.
The Obsidian Court rewards attention to lines, edges and the space you leave behind.
G encloses a complete R line. Both rubies turn gold.
Start with Gold
The six-by-six court begins with two gold and two ruby discs in the centre. You control Gold. A small marker identifies an empty square where you can legally play. Tap or click a marker; on a keyboard, use Tab or the arrow keys to reach a square and Enter or Space to choose it.
Enclose a complete line
A move is legal when your new disc and an existing gold disc enclose one or more consecutive rubies along a row, column or diagonal. There cannot be an empty square between them. Every qualifying line changes to Gold, so one placement may turn discs in several directions.
Let Ruby reply
The computer considers its own legal moves after you play. It favours corners and some edge positions while also considering immediate flips. This is a lightweight opponent, not a perfect solver. If one side cannot move, it passes; the other side can continue.
Know when the court is finished
The match ends when neither side has a legal move. The board does not need to be completely full for that to happen. Gold and Ruby are counted, and the larger total wins the local match. Equal totals are a draw; there is no reward, ranking or financial result.
Use a small safety net
Consider a move outlines one legal suggestion without playing it. Undo turn takes back your previous move together with Ruby’s reply. Starting a new match resets the board. A hint is not guaranteed to be the strongest move in every position.
Look beyond the next flip
Taking the largest visible line can leave a corner open for the opponent. Before committing, look at the boundary squares your move creates. A corner cannot later be enclosed from outside the board; a large central group may change hands more than once.
Ready to try the idea?
All of the controls described above are included on the main page. A new visit starts with a clean activity.
Enter the court