0-0

See also: 00 and Appendix:Variations of "oo"

Translingual

Alternative forms

Symbol

0-0

  1. (chess) kingside castling
    • 2022, “2023 Laws of Chess”, in FIDE‎[1] (in English), page 23:
      1.e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 e.p. Nxd6 7. Bg5 Nc6 8. Qe3+ Be7 9. Nbd2 0-0 10. 0-0-0 Re8 11. Kb1 (=)

See also

English

Adjective

0-0 (not comparable)

  1. (aviation) zero-zero, a term meaning no ceiling and no visibility
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