TWO LETTERS. SO MANY POSSIBILITIES.
Borrow an S. Leave an O. Find a line worth keeping.
Make your first mark. Every empty square is a possibility.
A SHARED ALPHABET
On your turn, choose S or O and place it in an empty square. Neither letter belongs to a player.
Complete S–O–S in a straight horizontal, vertical or diagonal line to earn one point per new line. Lines may share letters. A scoring move earns another turn; otherwise the turn passes.
When all squares are filled, the higher score wins. Equal scores are a draw. In solo play, Echo looks for scoring moves and avoids immediate gifts. Undo restores your previous whole turn; history lasts until reload. The current page saves on this device.
Use arrows to navigate the board, S/O to choose, Enter or Space to place. H suggests a move; U undoes.
Adapted from MadeOfBees/JSOS, MIT. Corrected 2D detection and scoring rules. Source and license included in this release.
A FRESH SHEET
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