Noughts & crosses · the singing board
ZERO KAATA
ज़ीरो काटा · three in a row is a chordThe game from the back page of every school notebook — and every square sings. Line up three and you've played a chord. On the singing board, crosses chase the major rows and noughts the minor columns.
Who is playing
You take turns being crosses — crosses always go first. First to three wins the match.
Open a room and send its word. The first two at the table play; everyone else watches and hears every move.
Got a word from a friend?
How you play
More options
Ears level
How the board sings Sa is G · the Eyes & ears board
Every square holds one note (a dot above a swara means the octave above; two dots, two octaves up). Read any line of three and you've spelled a chord:
- Rows are major — Eb major (Eb G Bb), C major (C E G), G major (G B D). Crosses' world.
- Columns are minor — C minor (C Eb G), G minor (G Bb D), E minor (E G B). Noughts' world.
- The diagonals: Sa in three octaves (G G G), and Eb augmented (Eb G B) — the question mark.
- Crossing lines are close cousins: G major and G minor share G and D, C major and C minor share C and G, G major and E minor share G and B — the little patch of the Tonnetz where G major meets G minor.
- A draw comes home on the minor plagal cadence: C major → C minor → G major (IV → iv → I).
In Eyes any three in a row wins, and each mark still sings. In Ears the notes are shuffled and hidden — you win a square only by hearing it right.