MODIFICATION - Add comments, Import chess games, catalog them, list from first variation move and by frequency. / Chess and Music brainstorming

Also see hhttps://1a2b3c4d5e6f7g8h9i10j11k12l13m14n.blogspot.com/2026/06/modification-import-chess-games-catalog.html and https://1a2b3c4d5e6f7g8h9i10j11k12l13m14n.blogspot.com/2026/06/import-chess-games-catalog-them-list.html """ chessopenings3cleanup.py Interactive Opening Catalog + Continuation Analyzer - Loads existing opening catalog (JSON) - Processes ONE PGN at a time - Preserves PGN comments { } - Displays full interactive catalog - Allows manual reordering - Save with comments or without comments Requires: pip install python-chess """ import chess.pgn import os import json import re JSON_FILE = "personal_openings.json" START_PLY = 0 MAX_PLIES = 30 # ---------------------------- # LOAD / SAVE # ---------------------------- def load_data(): if os.path.exists(JSON_FILE): with open(JSON_FILE, "r", encoding="utf-8") as f: return json.load(f) return {} def save_data(data): with open(JSON_FILE, "w", encoding="utf-8") as f: json.dump(data, f, indent=4) def strip_comments(text): return re.sub(r"\s*\{.*?\}", "", text) def remove_comments_from_data(data): clean_data = {} for opening_key, variations in data.items(): clean_data[opening_key] = {} for line, freq in variations.items(): clean_line = strip_comments(line) if clean_line not in clean_data[opening_key]: clean_data[opening_key][clean_line] = freq else: clean_data[opening_key][clean_line] += freq return clean_data # ---------------------------- # FORMAT MOVES # ---------------------------- def format_continuation(san_moves, start_ply): lines = [] i = 0 ply = start_ply while i < len(san_moves) and ply < MAX_PLIES: move_number = (ply // 2) + 1 white = san_moves[i] i += 1 ply += 1 line = f"{move_number}. {white}" if i < len(san_moves) and ply < MAX_PLIES: black = san_moves[i] i += 1 ply += 1 line += f" {black}" lines.append(line) return lines # ---------------------------- # PROCESS PGN # ---------------------------- def process_pgn(filename, data): game_count = 0 with open(filename, "r", encoding="utf-8", errors="ignore") as pgn: while True: game = chess.pgn.read_game(pgn) if game is None: break game_count += 1 eco = game.headers.get("ECO", "").strip() opening = game.headers.get("Opening", "").strip() variation = game.headers.get("Variation", "").strip() white_elo = game.headers.get("WhiteElo", "") black_elo = game.headers.get("BlackElo", "") try: white_elo = int(white_elo) black_elo = int(black_elo) except ValueError: continue if white_elo < 2100 and black_elo < 2100: continue if not opening: opening = "Unknown Opening" key = f"{eco} | {opening}" if variation: key += f" | {variation}" board = game.board() san_moves = [] node = game ply_count = 0 while node.variations and ply_count < MAX_PLIES: next_node = node.variation(0) move_text = board.san(next_node.move) comment = next_node.comment.strip() if comment: move_text += f" {{{comment}}}" san_moves.append(move_text) board.push(next_node.move) node = next_node ply_count += 1 catalog_lines = format_continuation( san_moves, START_PLY ) catalog_str = " ".join(catalog_lines) if key not in data: data[key] = {} if catalog_str not in data[key]: data[key][catalog_str] = 1 else: data[key][catalog_str] += 1 print("\nGames processed:", game_count) # ---------------------------- # DISPLAY # ---------------------------- def display(data): print("\nOPENING CATALOG") print("=" * 100) items = sorted( data.items(), key=lambda item: sum(item[1].values()), reverse=True ) for i, (key, variations) in enumerate(items, start=1): print(f"\n{i:3} {key}") sorted_variations = sorted( variations.items(), key=lambda x: x[1], reverse=True ) for j, (cont, freq) in enumerate( sorted_variations[:5], start=1 ): print(f"\n [{j}] freq={freq}") print(f" {cont}") print("-" * 100) # ---------------------------- # REORDER # ---------------------------- def reorder(data): items = list(data.items()) while True: display(dict(items)) print("\nCommands:") print(" X=Y move item X to position Y") print(" s save WITH comments") print(" n save WITHOUT comments") print(" q quit") cmd = input("\nCommand: ").strip().lower() if cmd == "s": save_data(dict(items)) print("\nSaved with comments.") continue if cmd == "n": clean_data = remove_comments_from_data( dict(items) ) save_data(clean_data) print("\nSaved without comments.") continue if cmd == "q": return dict(items) if "=" in cmd: try: a, b = cmd.split("=") a = int(a) - 1 b = int(b) - 1 item = items.pop(a) items.insert(b, item) except: print("Invalid command") # ---------------------------- # MAIN # ---------------------------- def main(): data = load_data() print("\nChessOpenings3 Cleanup") print("----------------------") filename = input( "\nPGN filename (WITHOUT .pgn): " ).strip() if not filename: return filename += ".pgn" if not os.path.exists(filename): print("File not found:", filename) return process_pgn(filename, data) data = reorder(data) print("\nDone.") if __name__ == "__main__": main()

ChatGPT - Brainstorm for different approach (user interaction and sharing), third code preparation

# chessopenings3.py - Project Summary ## Why chessopenings3.py Exists This is a significant departure from chessopenings2.py. The original direction was moving toward creating a prescribed hierarchy of openings and variations. After reviewing another person's opening PDF and discussing user customization, the conclusion was reached that the software should not impose a hierarchy. Instead: * The program creates and maintains an opening database. * The user creates the hierarchy. * Different users can create different hierarchies from the same underlying database. * Users can share or adopt other users' catalogs. Example: * A 1000-rated player may adopt a 1200-rated player's catalog. * A 1200-rated player may adopt a 1500-rated player's catalog. * Users may modify these catalogs over time. The software should support this rather than enforcing a fixed order. --- ## Core Philosophy The software should: * Preserve data. * Preserve annotations. * Preserve PGN information. * Allow user-defined ordering. * Avoid automatic interpretation whenever possible. The user is responsible for deciding: * What matters. * What should be ranked higher. * What should be grouped together. * What annotations should exist. The program should not attempt to merge comments, generate annotations, or determine meaning. --- ## Immediate Changes From chessopenings2.py ### 1. Remove the Move-4 Assumption The current code effectively assumes opening/variation identification begins around moves 4-5. This must change. Some openings become meaningful before move 4. Examples: * Reti Opening * Ruy Lopez * Other systems identified very early The importer should not assume: Opening -> Move 4 -> Variation Instead: Opening -> Next Important Move regardless of move number. The ECO code already present in the PGN can be used to identify the opening. --- ### 2. Remove Custom "|" Formatting The existing pipe-delimited format should be eliminated. The project should stay as close to standard PGN as possible. Goal: PGN -> JSON -> PGN without introducing custom move notation. --- ### 3. Preserve Full Games Do not store only opening fragments. Store: * Full PGN move text * Entire game * Headers * Comments * Variations The full game should remain available. Future projects may need information later in the game. --- ### 4. Preserve Headers At minimum preserve: * Event * Site * Date * White * Black * Result * ECO * Opening * Variation Additional headers may also be preserved. --- ## Annotation Philosophy ### Preserve Existing Annotations PGN comments using: ```pgn {comment text} ``` must be preserved. This is a long-standing PGN standard. Examples: ```pgn {Black asks the bishop a question.} ``` ```pgn {Tal sacrifices material for initiative.} ``` ```pgn {P-K4 was considered best in older books.} ``` The importer should preserve comments exactly. --- ### Preserve Variations Side variations: ```pgn (12...Nf6 13.Re1) ``` should also be preserved. --- ### Preserve Symbolic Annotations If Present Examples: ```pgn ! ? !! ?? !? ?! ``` These are not a priority for Project 1. However: * Do not remove them. * Preserve them if they exist. They may become useful later. --- ### Do Not Interpret Annotations The software should not decide: * Which annotation is correct. * Which annotation is better. * Whether an annotation agrees with an engine. Project 1 is not an engine-analysis project. --- ### Descriptive Notation Is Allowed Comments may contain: * Algebraic notation * Descriptive notation * Historical notation * Mixed notation Examples: ```text P-K4 ``` or ```text 1.e4 ``` The software should simply preserve text. --- ## JSON Philosophy The JSON becomes the master database. The user may no longer possess the original PGN files. Therefore the JSON must contain enough information to reconstruct or export PGN later. The JSON should preserve: * Headers * Moves * Comments * Variations * User-added annotations --- ## Annotation Editing Philosophy No automatic merging. No AI merging. No engine merging. No conflict resolution. Workflow: Current annotation ↓ User edits annotation ↓ Save ↓ Replace previous annotation Exactly like: * YouTube comments * Facebook edits * Editing a text document The user supplies the complete updated text. The software stores the new version. --- ## Updating Existing Games If a game is re-imported later: The goal is NOT: Duplicate Game The goal is: Update Existing Game The same game should not count twice. The program should recognize an existing game and allow updating rather than duplicating. This prevents variation counts from becoming inflated. --- ## Search Functionality Eventually the user should not be forced to sort all variations. Example: Search: Ruy Lopez The user only sees Ruy Lopez variations. Similarly: Search: French Defense Search: Caro-Kann Search: Italian Game This allows focused catalog construction. --- ## Hierarchy Philosophy The software does NOT create the hierarchy. The user creates the hierarchy. Examples: * Global ranking * Opening ranking * Pattern ranking are user-generated concepts. Different users will create different structures. This is intentional. --- ## Pattern Relationships Future possibility: The software preserves ECO classification while allowing users to discover pattern relationships. Examples: French Advance ↔ Caro-Kann Advance Ruy Lopez ↔ Italian These relationships are not required to be hard-coded. The user may discover and organize these patterns naturally. --- ## Project 1 Scope Project 1 is NOT: * Engine analysis * Stockfish integration * Automatic evaluation * Automatic annotation generation Project 1 IS: * PGN import * JSON creation * Annotation preservation * Header preservation * Variation preservation * User-controlled organization * Future PGN export capability --- ## Filename Create as: chessopenings3.py Reason: This is a significant departure from chessopenings2.py. If the design succeeds, continue forward. If it fails, return to chessopenings2.py and attempt a different chessopenings3.py approach. Do not overwrite chessopenings2.py.

MODIFICATION - Import chess games, catalog them, list from first variation move and by frequency. / Chess and Music brainstorming

Check previous post for Chess and Music brainstorming, https://1a2b3c4d5e6f7g8h9i10j11k12l13m14n.blogspot.com/2026/06/import-chess-games-catalog-them-list.html """ chessopenings2.py Interactive Opening Catalog + Continuation Analyzer - Loads existing opening catalog (JSON) - Processes ONE PGN at a time - Extracts continuations (moves AFTER opening) - Displays full interactive catalog in PyCharm - Allows manual reordering like chessopenings1.py Requires: pip install python-chess """ import chess.pgn import os import json JSON_FILE = "personal_openings.json" OPENING_SKIP_PLIES = 6 # skip first ~3 full moves MAX_PLIES = 30 # up to 15 full moves # ---------------------------- # LOAD / SAVE # ---------------------------- def load_data(): if os.path.exists(JSON_FILE): with open(JSON_FILE, "r", encoding="utf-8") as f: return json.load(f) return {} def save_data(data): with open(JSON_FILE, "w", encoding="utf-8") as f: json.dump(data, f, indent=4) # ---------------------------- # FORMAT CONTINUATIONS (MOVE NUMBERED) # ---------------------------- def format_continuation(san_moves, start_ply): lines = [] i = 0 ply = start_ply while i < len(san_moves) and ply < MAX_PLIES: move_number = (ply // 2) + 1 white = san_moves[i] i += 1 ply += 1 line = f"{move_number}. {white}" if i < len(san_moves) and ply < MAX_PLIES: black = san_moves[i] i += 1 ply += 1 line += f" {black}" lines.append(line) return lines # ---------------------------- # PROCESS PGN # ---------------------------- def process_pgn(filename, data): game_count = 0 with open(filename, "r", encoding="utf-8", errors="ignore") as pgn: while True: game = chess.pgn.read_game(pgn) if game is None: break game_count += 1 eco = game.headers.get("ECO", "").strip() opening = game.headers.get("Opening", "").strip() variation = game.headers.get("Variation", "").strip() white_elo = game.headers.get("WhiteElo", "") black_elo = game.headers.get("BlackElo", "") try: white_elo = int(white_elo) black_elo = int(black_elo) except ValueError: continue if white_elo < 2100 and black_elo < 2100: continue if not opening: opening = "Unknown Opening" key = f"{eco} | {opening}" if variation: key += f" | {variation}" board = game.board() san_moves = [] for move in game.mainline_moves(): san_moves.append(board.san(move)) board.push(move) continuation_moves = san_moves[ OPENING_SKIP_PLIES:OPENING_SKIP_PLIES + MAX_PLIES ] start_ply = OPENING_SKIP_PLIES continuation_lines = format_continuation( continuation_moves, start_ply ) continuation_str = " | ".join(continuation_lines) if key not in data: data[key] = {} if continuation_str not in data[key]: data[key][continuation_str] = 1 else: data[key][continuation_str] += 1 print("\nGames processed:", game_count) # ---------------------------- # DISPLAY # ---------------------------- def display(data): print("\nOPENING CATALOG (WITH CONTINUATIONS)") print("=" * 100) items = sorted( data.items(), key=lambda item: sum(item[1].values()), reverse=True ) for i, (key, variations) in enumerate(items, start=1): print(f"\n{i:3} {key}") if not variations: print(" (no continuation data yet)") continue sorted_variations = sorted( variations.items(), key=lambda x: x[1], reverse=True ) for j, (cont, freq) in enumerate(sorted_variations[:5], start=1): print(f"\n [{j}] freq={freq}") print(f" {cont}") print("-" * 100) # ---------------------------- # REORDER SYSTEM # ---------------------------- def reorder(data): items = list(data.items()) while True: display(dict(items)) print("\nCommands:") print(" X=Y move item X to position Y") print(" s save") print(" q quit") cmd = input("\nCommand: ").strip().lower() if cmd == "s": save_data(dict(items)) print("\nSaved.") continue if cmd == "q": return dict(items) if "=" in cmd: try: a, b = cmd.split("=") a = int(a) - 1 b = int(b) - 1 item = items.pop(a) items.insert(b, item) except: print("Invalid command") # ---------------------------- # MAIN # ---------------------------- def main(): data = load_data() print("\nChessOpenings2 - Interactive Continuation System") print("------------------------------------------------") filename = input("\nPGN filename (WITHOUT .pgn): ").strip() if not filename: return filename = filename + ".pgn" if not os.path.exists(filename): print("File not found:", filename) return process_pgn(filename, data) data = reorder(data) save_data(data) print("\nDone.") if __name__ == "__main__": main()

Import chess games, catalog them, list from first variation move and by frequency / Chess and Music brainstorming

Here is a koan for you. If I don't say Mahler in the beginning, who hears Mahler at the end? Code for Chess Openings Project 1 (second .py) """ chessopenings2.py Interactive Opening Catalog + Continuation Analyzer - Loads existing opening catalog (JSON) - Processes ONE PGN at a time - Extracts continuations (moves AFTER opening) - Displays full interactive catalog in PyCharm - Allows manual reordering like chessopenings1.py Requires: pip install python-chess """ import chess.pgn import os import json JSON_FILE = "personal_openings.json" OPENING_SKIP_PLIES = 6 # skip first ~3 full moves MAX_PLIES = 30 # up to 15 full moves # ---------------------------- # LOAD / SAVE # ---------------------------- def load_data(): if os.path.exists(JSON_FILE): with open(JSON_FILE, "r", encoding="utf-8") as f: return json.load(f) return {} def save_data(data): with open(JSON_FILE, "w", encoding="utf-8") as f: json.dump(data, f, indent=4) # ---------------------------- # FORMAT CONTINUATIONS (MOVE NUMBERED) # ---------------------------- def format_continuation(san_moves, start_ply): lines = [] i = 0 ply = start_ply while i < len(san_moves) and ply < MAX_PLIES: move_number = (ply // 2) + 1 white = san_moves[i] i += 1 ply += 1 line = f"{move_number}. {white}" if i < len(san_moves) and ply < MAX_PLIES: black = san_moves[i] i += 1 ply += 1 line += f" {black}" lines.append(line) return lines # ---------------------------- # PROCESS PGN # ---------------------------- def process_pgn(filename, data): game_count = 0 with open(filename, "r", encoding="utf-8", errors="ignore") as pgn: while True: game = chess.pgn.read_game(pgn) if game is None: break game_count += 1 eco = game.headers.get("ECO", "").strip() opening = game.headers.get("Opening", "").strip() variation = game.headers.get("Variation", "").strip() if not opening: opening = "Unknown Opening" key = f"{eco} | {opening}" if variation: key += f" | {variation}" board = game.board() san_moves = [] for move in game.mainline_moves(): san_moves.append(board.san(move)) board.push(move) continuation_moves = san_moves[ OPENING_SKIP_PLIES:OPENING_SKIP_PLIES + MAX_PLIES ] start_ply = OPENING_SKIP_PLIES continuation_lines = format_continuation( continuation_moves, start_ply ) continuation_str = " | ".join(continuation_lines) if key not in data: data[key] = {} if continuation_str not in data[key]: data[key][continuation_str] = 1 else: data[key][continuation_str] += 1 print("\nGames processed:", game_count) # ---------------------------- # DISPLAY # ---------------------------- def display(data): print("\nOPENING CATALOG (WITH CONTINUATIONS)") print("=" * 100) items = list(data.items()) for i, (key, variations) in enumerate(items, start=1): print(f"\n{i:3} {key}") print("-" * 100) if not variations: print(" (no continuation data yet)") continue sorted_variations = sorted( variations.items(), key=lambda x: x[1], reverse=True ) for j, (cont, freq) in enumerate(sorted_variations[:5], start=1): print(f"\n [{j}] freq={freq}") print(f" {cont}") # ---------------------------- # REORDER SYSTEM # ---------------------------- def reorder(data): items = list(data.items()) while True: display(dict(items)) print("\nCommands:") print(" X=Y move item X to position Y") print(" s save") print(" q quit") cmd = input("\nCommand: ").strip().lower() if cmd == "s": save_data(dict(items)) print("\nSaved.") continue if cmd == "q": return dict(items) if "=" in cmd: try: a, b = cmd.split("=") a = int(a) - 1 b = int(b) - 1 item = items.pop(a) items.insert(b, item) except: print("Invalid command") # ---------------------------- # MAIN # ---------------------------- def main(): data = load_data() print("\nChessOpenings2 - Interactive Continuation System") print("------------------------------------------------") filename = input("\nPGN filename (WITHOUT .pgn): ").strip() if not filename: return filename = filename + ".pgn" if not os.path.exists(filename): print("File not found:", filename) return process_pgn(filename, data) data = reorder(data) save_data(data) print("\nDone.") if __name__ == "__main__": main() 🤣 Now I get it. You told me at the very beginning: "At the end I will probably ask for a summary..." Then I recommended Mahler. Then we spent half an hour talking about Mahler, and I started waiting for your review. Meanwhile, you were waiting for the thing you had already told me you would probably want: the summary. So the koan was basically: If I don't say Mahler in the beginning, who hears Mahler at the end? Meaning: The conversation began as a chess-to-music project discussion, not a Mahler discussion. Therefore the thing that should be preserved is the project discussion, not my anticipation of your Mahler reaction. Well played. Summary: Chess-to-Music Discussion (Non-Programming Session) Initial Observation The user observed that while building the opening catalog project and sorting large numbers of games (899-game and 1650-game opening collections), they became aware of how limited their own opening vocabulary had been. This was compared to discovering an entire musical genre after previously knowing only a small portion of it. The project focus remained: Chess Music Pattern recognition No programming discussion Original Piece-to-Note System The user described an older music conversion system developed decades ago. Characteristics: One piece assigned to one note/function. Material changes produced musical changes. Piece captures and trades altered the musical output. Both White and Black pieces contributed. Promotions could introduce new musical possibilities. Example concepts: King = tonic Queen = perfect fifth Rooks = fourth and third Bishops = second and sixth Knight = seventh The user noted that this approach now feels too restrictive. Shift Toward Relationships A major conclusion emerged: The important information in chess may not be individual pieces but relationships between pieces. Potential hierarchy: Pieces → Notes Piece relationships → Intervals Position → Chords Overall structure → Harmonic environment The conversation repeatedly returned to the idea that chess is fundamentally relational. Melody vs Harmony Initial proposal: Moves → Melody Positions → Harmony The user challenged this distinction using arpeggios. Observation: An arpeggio can function simultaneously as: Melody Harmonic definition Conclusion: The distinction is not absolute. The more important question is: What musical information is being represented? Opening Moves as Tonal Identity User proposal: 1.e4 = Major 1.d4 = Minor 1.c4 = Modulation Discussion clarified that this was not necessarily about literal keys. Instead it represented: Strategic character Opening philosophy Positional identity The English Opening (1.c4) was noted as particularly interesting because of its transpositional nature. Modes Discussion User background: Learned Major Natural Minor Harmonic Minor Melodic Minor The seven modes felt historically secondary. Discussion points: Theoretically all modes are equal. Historically major/minor became dominant. The user's association of modes with Renaissance and older music has historical justification. Special attention was given to: Lydian Flat 7 Tritones Modal thinking vs tonal thinking Clarification Regarding Atonality An important correction was made. The user stated: No opposition to atonal music. Strong admiration for: Arnold Schoenberg Alban Berg Appreciation of: Pierrot Lunaire Wozzeck The issue was not dislike of advanced music. The issue was educational structure. Conclusion: Advanced systems should be studied after foundations are established. The Concept of "Path" A recurring theme. The user emphasized that both chess and music require structured learning paths. Examples: Chess: Development Center control King safety Piece coordination Music: Scales Intervals Chords Tonality More advanced concepts become meaningful later. Strong Players vs Weak Players Discussion evolved around: Grandmasters Tournament players (1500–2000 range) Observation: A grandmaster may survive unusual openings because of deep understanding extending into move 65. A stronger club player often wins much earlier by recognizing violations of fundamental principles. This became one justification for the project's 15-move limit. Why the 15-Move Limit Exists The user clarified the project's focus. Moves 1–15 are where: Structure forms Plans emerge Opening identities appear Strategic patterns become visible Later moves increasingly reflect: Individual calculation Endgame skill Tactical accuracy Time management Therefore: The project studies formation rather than the entire game. Nepomniachtchi–Niemann Example Used as an illustration. Discussion centered around: Extensive preparation A late-game king move deciding the result Conclusion: The final mistake does not necessarily define the game. The underlying structure may have been established much earlier. Analogy: The opening and middlegame create the composition. The final error resembles a performance mistake. Tonality as Strategic Coherence An important insight emerged. Instead of treating tonality as a literal musical concept: Tonality could represent: Strategic consistency Coherent planning Positional logic Conversely: "Atonality" in club chess might represent: Contradictory plans Random reactions Loss of strategic continuity This was not meant as a literal comparison to Schoenberg or Berg. John Williams and Musical Color Discussion shifted toward orchestration. Topics: Flutes associated with flight Film scoring traditions Debussy's influence Instrumental color Important conclusion: Music is not only: Notes Harmony Scales Music is also: Timbre Instrumentation Texture Potential chess equivalent: Different piece types may require different instrumental colors. Mozart and Performers Discussion explored the idea that Mozart often composed with specific musicians in mind. Chess analogy: Position = score Player = performer The same position can be interpreted differently by different players. Emerging Framework A provisional framework emerged: Chess Music Piece Note Piece relationship Interval Position Chord Opening family Tonal environment Piece type Timbre Transposition Modulation Strategic transformation Harmonic progression Mahler Detour The conversation briefly shifted toward Gustav Mahler. Recommendation: Symphony No. 1 Reason: Most accessible entry point. Approximately 55 minutes. Good introduction before exploring larger Mahler works. No listening report was given yet. The user stated they would listen later and decide what to do afterward. Final Meta-Observation The conversation repeatedly reinforced one central project principle: The goal is not to translate every move of a chess game into music. The goal is to discover the foundational structures that emerge during the formative phase of a game and determine how those structures might correspond to musical ideas. In both chess and music, the emphasis remains on: Pattern generators Structural relationships Learning paths Foundational understanding before complexity.

Import .pgn, list by frequency, and allow for adjustments.

This python code with the help of ChatGPT should lay out further important changes. You bring in tournament games, you rank them, and then you allow the user to re-order. """ chessopenings1.py Personal Opening Catalog Manager Requires: pip install python-chess """ import chess.pgn from collections import Counter import json import os JSON_FILE = "personal_openings.json" def load_personal_list(): if os.path.exists(JSON_FILE): with open(JSON_FILE, "r", encoding="utf-8") as f: return json.load(f) return None def save_personal_list(openings): with open(JSON_FILE, "w", encoding="utf-8") as f: json.dump(openings, f, indent=4) def extract_openings(filename): counter = Counter() game_count = 0 try: with open(filename, "r", encoding="utf-8", errors="ignore") as pgn: while True: game = chess.pgn.read_game(pgn) if game is None: break game_count += 1 eco = game.headers.get("ECO", "").strip() opening = game.headers.get("Opening", "").strip() variation = game.headers.get("Variation", "").strip() if not opening: opening = "Unknown Opening" if variation: name = f"{eco} | {opening} | {variation}" else: name = f"{eco} | {opening}" counter[name] += 1 except Exception as e: print("\nERROR READING FILE") print(e) return [] print(f"\nGames read: {game_count}") print(f"Unique openings found: {len(counter)}") return [opening for opening, count in counter.most_common()] def display_list(title, openings): print(f"\n{title}") print("=" * 80) for i, opening in enumerate(openings, start=1): print(f"{i:3} {opening}") def first_run(personal): while True: display_list("INITIAL OPENING LIST", personal) print("\nCommands") print("--------") print("2=1 Move item 2 to position 1") print("6=3 Move item 6 to position 3") print("s Save list") cmd = input("\nCommand: ").strip().lower() if cmd == "s": save_personal_list(personal) print( f"\nCreated {JSON_FILE}" f" with {len(personal)} openings." ) return personal if "=" not in cmd: print("Invalid command.") continue try: source, destination = cmd.split("=") source = int(source) destination = int(destination) if source < 1 or source > len(personal): print("Source out of range.") continue if destination < 1 or destination > len(personal): print("Destination out of range.") continue item = personal.pop(source - 1) personal.insert(destination - 1, item) except ValueError: print("Invalid command.") def update_existing_list(personal, ranked_openings): new_openings = [ opening for opening in ranked_openings if opening not in personal ] if not new_openings: print("\nNo new openings found.") return personal while True: display_list("PERSONAL OPENING LIST", personal) display_list("NEW OPENINGS", new_openings) print("\nCommands") print("--------") print("1=3 Insert NEW opening #1 into PERSONAL position #3") print("s Save and finish this PGN") cmd = input("\nCommand: ").strip().lower() if cmd == "s": save_personal_list(personal) print("\nChanges saved.") return personal if "=" not in cmd: print("Invalid command.") continue try: left, right = cmd.split("=") new_number = int(left) insert_position = int(right) if new_number < 1 or new_number > len(new_openings): print("Opening number out of range.") continue if insert_position < 1 or insert_position > len(personal) + 1: print("Insert position out of range.") continue opening = new_openings.pop(new_number - 1) personal.insert(insert_position - 1, opening) print(f"\nInserted:") print(opening) print(f"at position {insert_position}") save_personal_list(personal) if not new_openings: print("\nNo remaining new openings.") return personal except ValueError: print("Invalid command format.") def process_pgn(personal): name = input( "\nPGN filename (WITHOUT .pgn) or q to quit: " ).strip() if name.lower() == "q": return personal, False filename = name + ".pgn" if not os.path.exists(filename): print(f"\nFile not found: {filename}") return personal, True ranked_openings = extract_openings(filename) if not ranked_openings: print("\nNo openings found.") return personal, True # # FIRST RUN # if personal is None: personal = ranked_openings.copy() personal = first_run(personal) return personal, True # # LATER RUNS # personal = update_existing_list( personal, ranked_openings ) return personal, True def main(): personal = load_personal_list() if personal is None: print("\nNo personal_openings.json found.") print("The first PGN will create it.") else: print( f"\nLoaded {len(personal)} openings " f"from personal_openings.json" ) while True: personal, keep_running = process_pgn(personal) if not keep_running: break print("\nFinished.") if __name__ == "__main__": main()

ChatGPT Summary After PyCharm .pgn games / Opening and Variation Pruning Stage

Chess-to-Music Project Notes: Opening Hierarchy and Early-Game Focus The central goal is not to build a complete encyclopedia of chess openings. The goal is to create a useful map of chess opening knowledge that can later support analysis of recurring ideas, structures, and eventually connections to the chess-to-music project. The project is currently focused on moves 1–15. This is not because later moves are unimportant, but because the early phase of the game contains many of the seeds from which later plans, structures, and tactical opportunities emerge. A position on move 40 often has recognizable ancestors in the choices made during the first 15 moves. The opening hierarchy should include both openings and important variations. Variations cannot simply be ignored because many have developed identities of their own. For example, chess players often refer to the Slav, Dragon, Najdorf, or Sveshnikov as distinct entities rather than merely as branches of larger opening families. A key realization is that the project is not primarily concerned with identifying the strongest openings. Engine analysis can later evaluate move quality. Instead, the current task is to organize the landscape of chess openings and variations in a way that captures meaningful regions of chess thought and development. The analogy that best fits this approach is the Japanese Joyo Kanji system. The objective is not to catalog every possible opening or variation, just as language learners do not begin by learning every word in a dictionary. Instead, the objective is to identify a curated set of openings and variations that represent the core vocabulary of chess understanding for the target range of players. Another important realization is that chess openings should not be viewed only as labels. Different openings and variations may share deeper characteristics, much like oranges, tangerines, and mandarins are different fruits but belong to the same broader family. The long-term objective is to identify recurring ideas, tendencies, structures, and relationships that persist across different openings and variations. This also explains a dislike of isolated chess puzzles. Chess puzzles are valuable because they force calculation and critical thinking. However, they often remove the position from its context. The preferred approach is to understand how a position arose. The analogy is watching a movie from beginning to end rather than walking into the middle of the film. The sequence of decisions matters. A key conclusion from this discussion is: "Chess positions become more meaningful when viewed as part of a chain of relationships rather than as isolated snapshots." The opening hierarchy therefore serves as a laboratory rather than a destination. It provides a framework for organizing representative games and studying how ideas evolve from opening choices into later plans and structures. Current practical plan: 1. Obtain a broad opening and variation list. 2. Prune non-essential entries according to project goals. 3. Retain major opening families and significant variations. 4. Add representative games to each category. 5. Restore omitted variations later if they prove useful. The hierarchy does not need to be perfect initially. It only needs to be useful enough to begin revealing the relationships, structures, and recurring ideas that shape the development of chess games.