PNN (Piece Name Notation) provides a rule-agnostic, scalable naming system for identifying abstract strategy board game pieces. This gem implements the PNN Specification v1.0.0 with a modern Ruby interface featuring immutable piece name objects and functional programming principles. PNN uses canonical ASCII names with optional state modifiers and optional terminal markers (e.g., "KING", "queen", "+ROOK", "-pawn", "KING^", "+GENERAL^") to unambiguously refer to game pieces across variants and traditions. Ideal for engines, protocols, and tools that need clear and extensible piece identifiers.

Required Ruby Version

>= 3.2.0

Authors

Cyril Kato

Versions

  1. 3.1.0

    1. source

      1. 3.1.0 source December 02, 2025 (10.5 KB)
  2. 3.0.0

    1. source

      1. 3.0.0 source September 05, 2025 (9.5 KB)
  3. 2.0.0

    1. source

      1. 2.0.0 source July 02, 2025 (14 KB)
  4. 1.0.1

    1. source

      1. 1.0.1 source June 29, 2025 (10.5 KB)
  5. 1.0.0

    1. source

      1. 1.0.0 source June 29, 2025 (10.5 KB)

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cyri_

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