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Chess/testdata/famous.json
MSWS 1177bfa6bf test: Add JSON test cases and integration tests for chess moves 
```
Add comprehensive test cases for chess scenarios and validate JSON parsing in integration tests

- Add `integration_test.go` to handle JSON test cases, parse data, and validate chess move generation against expected results.
- Add `checkmates.json` with test cases for various checkmate scenarios, including mirrors and edge cases.
- Add `famous.json` detailing positions and test sequences from historical chess games for validation.
- Add `standard.json` to test and verify early-game chess positions and standard move transitions.
- Add `promotions.json` with detailed cases for pawn promotions, including edge scenarios and forced moves.
- Add additional JSON files (`castling.json`, `taxing.json`, `pawns.json`, `stalemates.json`) with test data for specific chess rule validations and edge cases like castling, stalemates, and en passant captures.
```

[testdata/integration_test.go]
- Adds a new test file to validate JSON-defined chess scenarios against board states and expected moves.
- Defines structs for handling test data, including descriptions, starting positions, and expected outcomes.
- Implements a test function to read JSON files in the directory, parse them, and execute tests on the data.
- Introduces helper functions to parse JSON data and iterate through test cases.
- Adds logic to compare expected moves from JSON with generated moves from the chess board state.
- Includes error handling for file reading, JSON unmarshalling, and position validation from the chess board.
[testdata/checkmates.json]
- Added a new JSON file containing test cases for checkmate scenarios.
- Each test case includes a FEN description and an expected output.
  - Descriptions and tests cover specific checkmate types: ladder mate, smothered mate, en passant situations, and minimal-piece mates.
- Added transposed positions for each checkmate scenario to validate mirrored setups.
[testdata/famous.json]
- Added new JSON file containing chess positions and test cases.
- Included a "description" field specifying the context of the chess problems.
- Each test case specifies a starting position (given by a FEN string) and a list of moves along with their corresponding resulting positions (also as FEN strings).
- Added detailed test cases for two famous chess games: "The Game of the Century" and "The Gold Coins Game".
  - For "The Game of the Century", provided multiple legal move sequences and their outcomes from a specific mid-game position.
  - For "The Gold Coins Game", included potential moves and their resulting positions leading to the iconic "Gold Coin move".
- Enriched some moves with descriptive comments for historical or tactical significance.
- Added various chess scenarios to thoroughly test a move generator's capability to handle diverse situations.
[testdata/standard.json]
- Added a new JSON file containing test cases for specific chess board positions.
- The JSON includes:
  - Definitions of starting positions using FEN strings.
  - Descriptions of the starting positions, such as "Standard starting position" and "Ruy Lopez opening".
  - Expected potential moves with resulting FEN states after each move. These moves explore various legal possibilities from the starting positions.
- The file contains test cases primarily for validating early-game configurations and various move transitions in chess.
[testdata/promotions.json]
- Added a new file containing JSON data describing chess test cases focused on pawn promotions.
- Included multiple scenarios covering basic promotion, transposed positions, and edge cases such as forced promotion to escape check or mate.
- Detailed expected moves and resulting board configurations in FEN format for each scenario.
- Descriptions accompanied each test case to clarify the situations being tested, like promoting via capture, forced promotions, or specific checks on the king.
- Covered scenarios where multiple promotion options exist, including promotions resulting in check or checkmate.
[testdata/castling.json]
- Added a new JSON file for castling test cases.
- Created test cases for all possible castling scenarios, including:
  - Normal castling for both sides.
  - Castling when prohibited due to an attacking piece (rook, bishop, knight, queen, king, and pawn).
  - Castling into or through check.
  - Castling when the king or rooks have moved.
- Implemented edge cases, including en passant and pawn-promotion interference with castling rights.
- Included transposed positions to test symmetry and equivalence in board states.
- Supported scenarios where attacks on rooks do not affect castling ability.
- Verified that castling remains allowed despite irrelevant pawn attacks or unoccupied intermediate squares.
[testdata/taxing.json]
- Added a large JSON file containing test cases and expected results for chess positions.
- Introduced different scenarios to analyze edge cases:
  - Positions with pieces in maximal quantity for a specific type (e.g., maximum knights, maximum queens, maximum bishops).
  - Transposed positions to verify symmetric behavior.
  - Special rules scenarios like prohibited en passant captures due to check.
- Organized data with a `description` for each scenario, `start` positions in FEN format, and corresponding `expected` moves with their resulting positions.
- Ensured diverse test coverage, including:
  - Positions designed to stress test move generation.
  - Positions covering intricate rules interactions like pawn structure scenarios (en passant).
  - Positions with multiple complexity levels (low-mobility vs high-mobility positions).
[testdata/pawns.json]
- Added a new JSON file defining test cases involving pawn positions in chess.
- The test cases cover various scenarios with en passant possibilities, moves without en passant, and full pawn setups.
- Each test scenario details the starting board position (FEN), a description, and expected moves along with the resulting FEN after each move.
- Includes mirrored or transposed versions of positions to test symmetry and edge cases.
- Scenarios test both legal and illegal moves, focusing on edge cases like restricted en passant and pawn movement logic.
- Ensures test coverage for complex pawn interactions, including rows with dense pawn positions and potential captures.
- Scenarios also evaluate king movements in relation to pawns.
- Emphasizes positions where rule-specific mechanics, like en passant, are critical to validate correctness.
[testdata/stalemates.json]
- Added a new JSON test data file for stalemate cases in chess.
- Included multiple test cases with starting positions (FEN notation) and expected results.
- Each test case represents a specific stalemate scenario or its transpose (mirrored version).
- Some descriptions provide details about positions, such as the shortest stalemate possible.
- Empty arrays are used for expected outputs, implying no further data is expected from these stalemate setups.
2025-03-22 17:46:26 -07:00

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{
"description": "Some positions involving famous moves, that you wouldn't want your move generator to miss!",
"testCases": [
{
"start": {
"description": "From 'The Game of the Century' (Bobby Fischer v. Donald Byrne).",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/3R1K1R w - - 4 18"
},
"expected": [
{
"move": "Rc1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/2R2K1R b - - 5 18"
},
{
"move": "Rb1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/1R3K1R b - - 5 18"
},
{
"move": "Ra1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/R4K1R b - - 5 18"
},
{
"move": "Re1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/4RK1R b - - 5 18"
},
{
"move": "Rd2",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P2R1PPP/5K1R b - - 5 18"
},
{
"move": "Rd3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1nR1N2/P4PPP/5K1R b - - 5 18"
},
{
"move": "Ke1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/3RK2R b - - 5 18"
},
{
"move": "Kg1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/3R2KR b - - 5 18"
},
{
"move": "Rg1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/3R1KR1 b - - 5 18"
},
{
"move": "g3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2NP1/P4P1P/3R1K1R b - - 0 18"
},
{
"move": "g4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP2P1/Q1n2N2/P4P1P/3R1K1R b - g3 0 18"
},
{
"move": "h3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N1P/P4PP1/3R1K1R b - - 0 18"
},
{
"move": "h4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP3P/Q1n2N2/P4PP1/3R1K1R b - h3 0 18"
},
{
"move": "Qb2",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/2n2N2/PQ3PPP/3R1K1R b - - 5 18"
},
{
"move": "Qc1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/2n2N2/P4PPP/2QR1K1R b - - 5 18"
},
{
"move": "Qb3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/1Qn2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Qxc3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/2Q2N2/P4PPP/3R1K1R b - - 0 18"
},
{
"move": "Qa4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/Q1BP4/2n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Qa5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/Q1B5/2BP4/2n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Qa6",
"fen": "r3r1k1/pp3pbp/Qqp1b1p1/2B5/2BP4/2n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Qxa7",
"fen": "r3r1k1/Qp3pbp/1qp1b1p1/2B5/2BP4/2n2N2/P4PPP/3R1K1R b - - 0 18"
},
{
"move": "Qb4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/1QBP4/2n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Ne1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n5/P4PPP/3RNK1R b - - 5 18"
},
{
"move": "Ng1",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n5/P4PPP/3R1KNR b - - 5 18"
},
{
"move": "Nd2",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n5/P2N1PPP/3R1K1R b - - 5 18"
},
{
"move": "Nh4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP3N/Q1n5/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Ne5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B1N3/2BP4/Q1n5/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Ng5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B3N1/2BP4/Q1n5/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bb3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/3P4/QBn2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bd3",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/3P4/Q1nB1N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Be2",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2B5/3P4/Q1n2N2/P3BPPP/3R1K1R b - - 5 18"
},
{
"move": "Bb5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/1BB5/3P4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Ba6",
"fen": "r3r1k1/pp3pbp/Bqp1b1p1/2B5/3P4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bd5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2BB4/3P4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bxe6",
"fen": "r3r1k1/pp3pbp/1qp1B1p1/2B5/3P4/Q1n2N2/P4PPP/3R1K1R b - - 0 18"
},
{
"move": "d5",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/2BP4/2B5/Q1n2N2/P4PPP/3R1K1R b - - 0 18"
},
{
"move": "Bb4",
"fen": "r3r1k1/pp3pbp/1qp1b1p1/8/1BBP4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bxb6",
"fen": "r3r1k1/pp3pbp/1Bp1b1p1/8/2BP4/Q1n2N2/P4PPP/3R1K1R b - - 0 18"
},
{
"move": "Bd6",
"fen": "r3r1k1/pp3pbp/1qpBb1p1/8/2BP4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Be7",
"fen": "r3r1k1/pp2Bpbp/1qp1b1p1/8/2BP4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
},
{
"move": "Bf8",
"fen": "r3rBk1/pp3pbp/1qp1b1p1/8/2BP4/Q1n2N2/P4PPP/3R1K1R b - - 5 18"
}
]
},
{
"start": {
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 b - - 0 1",
"description": "The Gold Coins Game. Position before the Gold Coins move!"
},
"expected": [
{
"move": "Qb2",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/7r/PqP2PPP/5RK1 w - - 1 2"
},
{
"move": "Qa1",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/7r/P1P2PPP/q4RK1 w - - 1 2"
},
{
"move": "Qxc2",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/7r/P1q2PPP/5RK1 w - - 0 2"
},
{
"move": "Qd2",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/7r/P1Pq1PPP/5RK1 w - - 1 2"
},
{
"move": "Qe1",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/7r/P1P2PPP/4qRK1 w - - 1 2"
},
{
"move": "Qb3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/1q5r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qa3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/q6r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qd3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/3q3r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qe3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/4q2r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qf3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/5q1r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qg3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/6qr/P1P2PPP/5RK1 w - - 1 2",
"description": "The Gold Coins move!"
},
{
"move": "Qb4",
"fen": "5rk1/pp4pp/4p3/2R3Q1/1q1n4/7r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qa5",
"fen": "5rk1/pp4pp/4p3/q1R3Q1/3n4/7r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qc4",
"fen": "5rk1/pp4pp/4p3/2R3Q1/2qn4/7r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Qxc5",
"fen": "5rk1/pp4pp/4p3/2q3Q1/3n4/7r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "Rxh2",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2q5/P1P2PPr/5RK1 w - - 0 2"
},
{
"move": "Rg3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2q3r1/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rhf3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2q2r2/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Re3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2q1r3/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rd3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n4/2qr4/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rh4",
"fen": "5rk1/pp4pp/4p3/2R3Q1/3n3r/2q5/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rh5",
"fen": "5rk1/pp4pp/4p3/2R3Qr/3n4/2q5/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rh6",
"fen": "5rk1/pp4pp/4p2r/2R3Q1/3n4/2q5/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Nxc2",
"fen": "5rk1/pp4pp/4p3/2R3Q1/8/2q4r/P1n2PPP/5RK1 w - - 0 2"
},
{
"move": "Ne2+",
"fen": "5rk1/pp4pp/4p3/2R3Q1/8/2q4r/P1P1nPPP/5RK1 w - - 1 2"
},
{
"move": "Nb3",
"fen": "5rk1/pp4pp/4p3/2R3Q1/8/1nq4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Nf3+",
"fen": "5rk1/pp4pp/4p3/2R3Q1/8/2q2n1r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Nb5",
"fen": "5rk1/pp4pp/4p3/1nR3Q1/8/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Nf5",
"fen": "5rk1/pp4pp/4p3/2R2nQ1/8/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Nc6",
"fen": "5rk1/pp4pp/2n1p3/2R3Q1/8/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "e5",
"fen": "5rk1/pp4pp/8/2R1p1Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "a6",
"fen": "5rk1/1p4pp/p3p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "a5",
"fen": "5rk1/1p4pp/4p3/p1R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - a6 0 2"
},
{
"move": "b6",
"fen": "5rk1/p5pp/1p2p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "b5",
"fen": "5rk1/p5pp/4p3/1pR3Q1/3n4/2q4r/P1P2PPP/5RK1 w - b6 0 2"
},
{
"move": "g6",
"fen": "5rk1/pp5p/4p1p1/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "h6",
"fen": "5rk1/pp4p1/4p2p/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 0 2"
},
{
"move": "h5",
"fen": "5rk1/pp4p1/4p3/2R3Qp/3n4/2q4r/P1P2PPP/5RK1 w - h6 0 2"
},
{
"move": "Rf7",
"fen": "6k1/pp3rpp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rf6",
"fen": "6k1/pp4pp/4pr2/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rf5",
"fen": "6k1/pp4pp/4p3/2R2rQ1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rf4",
"fen": "6k1/pp4pp/4p3/2R3Q1/3n1r2/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rff3",
"fen": "6k1/pp4pp/4p3/2R3Q1/3n4/2q2r1r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rxf2",
"fen": "6k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2rPP/5RK1 w - - 0 2"
},
{
"move": "Re8",
"fen": "4r1k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rd8",
"fen": "3r2k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rc8",
"fen": "2r3k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Rb8",
"fen": "1r4k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Ra8",
"fen": "r5k1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Kf7",
"fen": "5r2/pp3kpp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
},
{
"move": "Kh8",
"fen": "5r1k/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 w - - 1 2"
}
]
}
]
}
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