integrated material eval into psqt
This commit is contained in:
Moritz
parent
7b84e8a0ab
commit
b69323665c
4 changed files with 127 additions and 120 deletions
Binary file not shown.
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@ -29,7 +29,7 @@ fn main() {
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let mut engine = Engine::new("Yakari".to_string(), "EiSiMo".to_string());
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let mut engine = Engine::new("Yakari".to_string(), "EiSiMo".to_string());
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// Set the time limit to 1 second
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// Set the time limit to 1 second
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let time_limit = Duration::from_millis(500);
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let time_limit = Duration::from_millis(1000);
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for test in &sts {
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for test in &sts {
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let fen = &test[0];
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let fen = &test[0];
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@ -40,7 +40,7 @@ fn main() {
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// Record start time
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// Record start time
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let start_time = Instant::now();
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let start_time = Instant::now();
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let result = engine.search(490_u64);
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let result = engine.search(990_u64);
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// Calculate duration
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// Calculate duration
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let duration = start_time.elapsed();
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let duration = start_time.elapsed();
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@ -1,72 +1,65 @@
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use crate::board::*;
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use crate::board::*;
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use crate::eval::piece_square_tables::PSQT;
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use crate::eval::piece_square_tables::PSQT;
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// Pawn, Knight, Bishop, Rook, Queen
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pub const MATERIAL_WEIGHTS: [i32; 5] = [100, 300, 300, 500, 900];
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pub const PHASE_WEIGHTS: [i32; 5] = [0, 1, 1, 2, 4];
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pub fn evaluate_board(board: &Board) -> i32 {
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pub fn evaluate_board(board: &Board) -> i32 {
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let mut mg_score = 0_i32;
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let mut mg_score = 0_i32;
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let mut eg_score = 0_i32;
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let mut eg_score = 0_i32;
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let mut phase = 0_i32;
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let mut phase = 0_i32;
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// --- WHITE PIECES ---
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// We use a macro to force loop unrolling.
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// Iterating Pawn (0) to Queen (4) for Material + Phase + PSQT
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// This enables the compiler to use constant offsets for PSQT access
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for pt in 0..5 {
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// instead of calculating addresses at runtime based on a loop variable.
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let mut pieces = board.pieces[pt][Color::White as usize];
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macro_rules! score_piece {
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let count = pieces.count_ones() as i32;
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($pt:expr, $phase_weight:expr) => {
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// --- WHITE ---
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let mut pieces = board.pieces[$pt][Color::White as usize];
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if pieces > 0 {
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// Phase calculation uses count_ones (POPPCNT) which is very fast
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phase += (pieces.count_ones() as i32) * $phase_weight;
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mg_score += count * MATERIAL_WEIGHTS[pt];
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while pieces > 0 {
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eg_score += count * MATERIAL_WEIGHTS[pt];
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let sq = pieces.trailing_zeros() as usize;
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phase += count * PHASE_WEIGHTS[pt];
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pieces &= pieces - 1; // Clear LS1B
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while pieces > 0 {
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// Material is already baked into PSQT, so we just add the table value
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let sq = pieces.trailing_zeros() as usize;
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// Since $pt is a const literal here, this compiles to a direct memory access
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pieces &= pieces - 1; // Clear LS1B
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mg_score += PSQT[$pt][Color::White as usize][0][sq];
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eg_score += PSQT[$pt][Color::White as usize][1][sq];
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}
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}
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// Access: [Piece][Color][Phase (0=MG, 1=EG)][Square]
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// --- BLACK ---
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mg_score += PSQT[pt][Color::White as usize][0][sq];
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let mut pieces = board.pieces[$pt][Color::Black as usize];
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eg_score += PSQT[pt][Color::White as usize][1][sq];
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if pieces > 0 {
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}
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phase += (pieces.count_ones() as i32) * $phase_weight;
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while pieces > 0 {
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let sq = pieces.trailing_zeros() as usize;
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pieces &= pieces - 1;
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mg_score -= PSQT[$pt][Color::Black as usize][0][sq];
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eg_score -= PSQT[$pt][Color::Black as usize][1][sq];
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}
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}
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};
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}
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}
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// King (Index 5) - No Material/Phase weight, only PSQT
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// Explicitly unrolled execution order
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let mut white_king = board.pieces[5][Color::White as usize];
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// Pawn (0), Weight 0
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if white_king > 0 {
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score_piece!(0, 0);
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let sq = white_king.trailing_zeros() as usize;
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// Knight (1), Weight 1
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mg_score += PSQT[5][Color::White as usize][0][sq];
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score_piece!(1, 1);
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eg_score += PSQT[5][Color::White as usize][1][sq];
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// Bishop (2), Weight 1
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}
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score_piece!(2, 1);
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// Rook (3), Weight 2
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score_piece!(3, 2);
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// Queen (4), Weight 4
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score_piece!(4, 4);
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// King (5), Weight 0 (Phase doesn't change)
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score_piece!(5, 0);
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// --- BLACK PIECES ---
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// Tapered Evaluation
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// Iterating Pawn (0) to Queen (4)
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let phase = phase.min(24);
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for pt in 0..5 {
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let mut pieces = board.pieces[pt][Color::Black as usize];
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let count = pieces.count_ones() as i32;
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mg_score -= count * MATERIAL_WEIGHTS[pt];
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eg_score -= count * MATERIAL_WEIGHTS[pt];
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phase += count * PHASE_WEIGHTS[pt];
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while pieces > 0 {
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let sq = pieces.trailing_zeros() as usize;
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pieces &= pieces - 1;
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mg_score -= PSQT[pt][Color::Black as usize][0][sq];
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eg_score -= PSQT[pt][Color::Black as usize][1][sq];
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}
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}
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// King (Index 5) for Black
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let mut black_king = board.pieces[5][Color::Black as usize];
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if black_king > 0 {
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let sq = black_king.trailing_zeros() as usize;
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mg_score -= PSQT[5][Color::Black as usize][0][sq];
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eg_score -= PSQT[5][Color::Black as usize][1][sq];
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}
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// Tapered Evaluation Interpolation
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let phase = phase.min(24); // Clamp to 24 max
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let mg_phase = phase;
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let mg_phase = phase;
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let eg_phase = 24 - phase;
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let eg_phase = 24 - phase;
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@ -1,33 +1,47 @@
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// --- Material Values (PeSTO Standard) ---
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const MG_PAWN_VAL: i32 = 82;
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const EG_PAWN_VAL: i32 = 94;
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const MG_KNIGHT_VAL: i32 = 337;
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const EG_KNIGHT_VAL: i32 = 281;
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const MG_BISHOP_VAL: i32 = 365;
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const EG_BISHOP_VAL: i32 = 297;
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const MG_ROOK_VAL: i32 = 477;
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const EG_ROOK_VAL: i32 = 512;
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const MG_QUEEN_VAL: i32 = 1025;
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const EG_QUEEN_VAL: i32 = 936;
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const MG_KING_VAL: i32 = 0; // King usually has no material value in eval summation (captured = game over)
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const EG_KING_VAL: i32 = 0;
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pub const MG_PAWN_TABLE: [i32; 64] = [
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pub const MG_PAWN_TABLE: [i32; 64] = [
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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98, 134, 61, 95, 68, 126, 34, -11,
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98, 134, 61, 95, 68, 126, 34, -11,
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-6, 7, 26, 31, 65, 56, 25, -20,
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-6, 7, 26, 31, 65, 56, 25, -20,
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-14, 13, 6, 21, 23, 12, 17, -23,
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-14, 13, 6, 21, 23, 12, 17, -23,
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-27, -2, -5, 12, 17, 6, 10, -25,
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-27, -2, -5, 12, 17, 6, 10, -25,
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-26, -4, -4, -10, 3, 3, 33, -12,
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-26, -4, -4, -10, 3, 3, 33, -12,
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-35, -1, -20, -23, -15, 24, 38, -22,
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-35, -1, -20, -23, -15, 24, 38, -22,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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];
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];
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pub const EG_PAWN_TABLE: [i32; 64] = [
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pub const EG_PAWN_TABLE: [i32; 64] = [
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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178, 173, 158, 134, 147, 132, 165, 187,
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178, 173, 158, 134, 147, 132, 165, 187,
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94, 100, 85, 67, 56, 53, 82, 84,
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94, 100, 85, 67, 56, 53, 82, 84,
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32, 24, 13, 5, -2, 4, 17, 17,
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32, 24, 13, 5, -2, 4, 17, 17,
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13, 9, -3, -7, -7, -8, 3, -1,
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13, 9, -3, -7, -7, -8, 3, -1,
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4, 7, -6, 1, 0, -5, -1, -8,
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4, 7, -6, 1, 0, -5, -1, -8,
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13, 8, 8, 10, 13, 0, 2, -7,
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13, 8, 8, 10, 13, 0, 2, -7,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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];
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];
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pub const MG_KNIGHT_TABLE: [i32; 64] = [
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pub const MG_KNIGHT_TABLE: [i32; 64] = [
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-167, -89, -34, -49, 61, -97, -15, -107,
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-167, -89, -34, -49, 61, -97, -15, -107,
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-73, -41, 72, 36, 23, 62, 7, -17,
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-73, -41, 72, 36, 23, 62, 7, -17,
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-47, 60, 37, 65, 84, 129, 73, 44,
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-47, 60, 37, 65, 84, 129, 73, 44,
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-9, 17, 19, 53, 37, 69, 18, 22,
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-9, 17, 19, 53, 37, 69, 18, 22,
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-13, 4, 16, 13, 28, 19, 21, -8,
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-13, 4, 16, 13, 28, 19, 21, -8,
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-23, -9, 12, 10, 19, 17, 25, -16,
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-23, -9, 12, 10, 19, 17, 25, -16,
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-29, -53, -12, -3, -1, 18, -14, -19,
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-29, -53, -12, -3, -1, 18, -14, -19,
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-105, -21, -58, -33, -17, -28, -19, -23,
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-105, -21, -58, -33, -17, -28, -19, -23,
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];
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];
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@ -46,28 +60,28 @@ pub const MG_BISHOP_TABLE: [i32; 64] = [
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-29, 4, -82, -37, -25, -42, 7, -8,
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-29, 4, -82, -37, -25, -42, 7, -8,
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-26, 16, -18, -13, 30, 59, 18, -47,
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-26, 16, -18, -13, 30, 59, 18, -47,
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-16, 37, 43, 40, 35, 50, 37, -2,
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-16, 37, 43, 40, 35, 50, 37, -2,
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-4, 5, 19, 50, 37, 37, 7, -2,
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-4, 5, 19, 50, 37, 37, 7, -2,
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-6, 13, 13, 26, 34, 12, 10, 4,
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-6, 13, 13, 26, 34, 12, 10, 4,
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0, 15, 15, 15, 14, 27, 18, 10,
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0, 15, 15, 15, 14, 27, 18, 10,
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4, 15, 16, 0, 7, 21, 33, 1,
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4, 15, 16, 0, 7, 21, 33, 1,
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-33, -3, -14, -21, -13, -12, -39, -21,
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-33, -3, -14, -21, -13, -12, -39, -21,
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];
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];
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pub const EG_BISHOP_TABLE: [i32; 64] = [
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pub const EG_BISHOP_TABLE: [i32; 64] = [
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-14, -21, -11, -8, -7, -9, -17, -24,
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-14, -21, -11, -8, -7, -9, -17, -24,
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-8, -4, 7, -12, -3, -13, -4, -14,
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-8, -4, 7, -12, -3, -13, -4, -14,
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2, -8, 0, -1, -2, 6, 0, 4,
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2, -8, 0, -1, -2, 6, 0, 4,
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-3, 9, 12, 9, 14, 10, 3, 2,
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-3, 9, 12, 9, 14, 10, 3, 2,
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-6, 3, 13, 19, 7, 10, -3, -9,
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-6, 3, 13, 19, 7, 10, -3, -9,
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-12, -3, 8, 10, 13, 3, -7, -15,
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-12, -3, 8, 10, 13, 3, -7, -15,
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-14, -18, -7, -1, 4, -9, -15, -27,
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-14, -18, -7, -1, 4, -9, -15, -27,
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-23, -9, -23, -5, -9, -16, -5, -17,
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-23, -9, -23, -5, -9, -16, -5, -17,
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];
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];
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pub const MG_ROOK_TABLE: [i32; 64] = [
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pub const MG_ROOK_TABLE: [i32; 64] = [
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32, 42, 32, 51, 63, 9, 31, 43,
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32, 42, 32, 51, 63, 9, 31, 43,
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27, 32, 58, 62, 80, 67, 26, 44,
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27, 32, 58, 62, 80, 67, 26, 44,
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-5, 19, 26, 36, 17, 45, 61, 16,
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-5, 19, 26, 36, 17, 45, 61, 16,
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-24, -11, 7, 26, 24, 35, -8, -20,
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-24, -11, 7, 26, 24, 35, -8, -20,
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-36, -26, -12, -1, 9, -7, 6, -23,
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-36, -26, -12, -1, 9, -7, 6, -23,
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-45, -25, -16, -17, 3, 0, -5, -33,
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-45, -25, -16, -17, 3, 0, -5, -33,
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@ -78,9 +92,9 @@ pub const MG_ROOK_TABLE: [i32; 64] = [
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pub const EG_ROOK_TABLE: [i32; 64] = [
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pub const EG_ROOK_TABLE: [i32; 64] = [
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13, 10, 18, 15, 12, 12, 8, 5,
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13, 10, 18, 15, 12, 12, 8, 5,
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11, 13, 13, 11, -3, 3, 8, 3,
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11, 13, 13, 11, -3, 3, 8, 3,
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7, 7, 7, 5, 4, -3, -5, -3,
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7, 7, 7, 5, 4, -3, -5, -3,
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4, 3, 13, 1, 2, 1, -1, 2,
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4, 3, 13, 1, 2, 1, -1, 2,
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3, 5, 8, 4, -5, -6, -8, -11,
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3, 5, 8, 4, -5, -6, -8, -11,
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-4, 0, -5, -1, -7, -12, -8, -16,
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-4, 0, -5, -1, -7, -12, -8, -16,
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-6, -6, 0, 2, -9, -9, -11, -3,
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-6, -6, 0, 2, -9, -9, -11, -3,
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-9, 2, 3, -1, -5, -13, 4, -20,
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-9, 2, 3, -1, -5, -13, 4, -20,
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@ -91,17 +105,17 @@ pub const MG_QUEEN_TABLE: [i32; 64] = [
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-24, -39, -5, 1, -16, 57, 28, 54,
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-24, -39, -5, 1, -16, 57, 28, 54,
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-13, -17, 7, 8, 29, 56, 47, 57,
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-13, -17, 7, 8, 29, 56, 47, 57,
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-27, -27, -16, -16, -1, 17, -2, 1,
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-27, -27, -16, -16, -1, 17, -2, 1,
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-9, -26, -9, -10, -2, -4, 3, -3,
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-9, -26, -9, -10, -2, -4, 3, -3,
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-14, 2, -11, -2, -5, 2, 14, 5,
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-14, 2, -11, -2, -5, 2, 14, 5,
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-35, -8, 11, 2, 8, 15, -3, 1,
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-35, -8, 11, 2, 8, 15, -3, 1,
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-1, -18, -9, 10, -15, -25, -31, -50,
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-1, -18, -9, 10, -15, -25, -31, -50,
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];
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];
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pub const EG_QUEEN_TABLE: [i32; 64] = [
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pub const EG_QUEEN_TABLE: [i32; 64] = [
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-9, 22, 22, 27, 27, 19, 10, 20,
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-9, 22, 22, 27, 27, 19, 10, 20,
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-17, 20, 32, 41, 58, 25, 30, 0,
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-17, 20, 32, 41, 58, 25, 30, 0,
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-20, 6, 9, 49, 47, 35, 19, 9,
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-20, 6, 9, 49, 47, 35, 19, 9,
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3, 22, 24, 45, 57, 40, 57, 36,
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3, 22, 24, 45, 57, 40, 57, 36,
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-18, 28, 19, 47, 31, 34, 39, 23,
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-18, 28, 19, 47, 31, 34, 39, 23,
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-16, -27, 15, 6, 9, 17, 10, 5,
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-16, -27, 15, 6, 9, 17, 10, 5,
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-22, -23, -30, -16, -16, -23, -36, -32,
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-22, -23, -30, -16, -16, -23, -36, -32,
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@ -110,69 +124,69 @@ pub const EG_QUEEN_TABLE: [i32; 64] = [
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pub const MG_KING_TABLE: [i32; 64] = [
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pub const MG_KING_TABLE: [i32; 64] = [
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-65, 23, 16, -15, -56, -34, 2, 13,
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-65, 23, 16, -15, -56, -34, 2, 13,
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29, -1, -20, -7, -8, -4, -38, -29,
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29, -1, -20, -7, -8, -4, -38, -29,
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-9, 24, 2, -16, -20, 6, 22, -22,
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-9, 24, 2, -16, -20, 6, 22, -22,
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-17, -20, -12, -27, -30, -25, -14, -36,
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-17, -20, -12, -27, -30, -25, -14, -36,
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-49, -1, -27, -39, -46, -44, -33, -51,
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-49, -1, -27, -39, -46, -44, -33, -51,
|
||||||
-14, -14, -22, -46, -44, -30, -15, -27,
|
-14, -14, -22, -46, -44, -30, -15, -27,
|
||||||
1, 7, -8, -64, -43, -16, 9, 8,
|
1, 7, -8, -64, -43, -16, 9, 8,
|
||||||
-15, 36, 12, -54, 8, -28, 24, 14,
|
-15, 36, 12, -54, 8, -28, 24, 14,
|
||||||
];
|
];
|
||||||
|
|
||||||
pub const EG_KING_TABLE: [i32; 64] = [
|
pub const EG_KING_TABLE: [i32; 64] = [
|
||||||
-74, -35, -18, -18, -11, 15, 4, -17,
|
-74, -35, -18, -18, -11, 15, 4, -17,
|
||||||
-12, 17, 14, 17, 17, 38, 23, 11,
|
-12, 17, 14, 17, 17, 38, 23, 11,
|
||||||
10, 17, 23, 15, 20, 45, 44, 13,
|
10, 17, 23, 15, 20, 45, 44, 13,
|
||||||
-8, 22, 24, 27, 26, 33, 26, 3,
|
-8, 22, 24, 27, 26, 33, 26, 3,
|
||||||
-18, -4, 21, 24, 27, 23, 9, -11,
|
-18, -4, 21, 24, 27, 23, 9, -11,
|
||||||
-19, -3, 11, 21, 23, 16, 7, -9,
|
-19, -3, 11, 21, 23, 16, 7, -9,
|
||||||
-27, -11, 4, 13, 14, 4, -5, -17,
|
-27, -11, 4, 13, 14, 4, -5, -17,
|
||||||
-53, -34, -21, -11, -28, -14, -24, -43
|
-53, -34, -21, -11, -28, -14, -24, -43
|
||||||
];
|
];
|
||||||
|
|
||||||
/// Helper function to mirror the table vertically at compile time
|
/// Combines logic: mirrors (if needed) AND adds material value.
|
||||||
const fn mirror_psqt(table: [i32; 64]) -> [i32; 64] {
|
/// This happens at compile-time, so no runtime cost.
|
||||||
let mut mirrored = [0; 64];
|
const fn prepare_table(table: [i32; 64], material: i32, mirror: bool) -> [i32; 64] {
|
||||||
|
let mut out = [0; 64];
|
||||||
let mut i = 0;
|
let mut i = 0;
|
||||||
while i < 64 {
|
while i < 64 {
|
||||||
// XOR 56 maps rank 1 to 8, 2 to 7 etc, keeping files intact
|
let idx = if mirror { i ^ 56 } else { i };
|
||||||
mirrored[i] = table[i ^ 56];
|
out[i] = table[idx] + material;
|
||||||
i += 1;
|
i += 1;
|
||||||
}
|
}
|
||||||
mirrored
|
out
|
||||||
}
|
}
|
||||||
|
|
||||||
// Type signature: [Piece (6)] -> [Color (2)] -> [Phase (2)] -> [Square (64)]
|
// Type signature: [Piece (6)] -> [Color (2)] -> [Phase (2)] -> [Square (64)]
|
||||||
pub const PSQT: [[[[i32; 64]; 2]; 2]; 6] = [
|
pub const PSQT: [[[[i32; 64]; 2]; 2]; 6] = [
|
||||||
// 1. PAWN
|
// 1. PAWN
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_PAWN_TABLE), mirror_psqt(EG_PAWN_TABLE)], // White (Muss geflippt werden!)
|
[prepare_table(MG_PAWN_TABLE, MG_PAWN_VAL, true), prepare_table(EG_PAWN_TABLE, EG_PAWN_VAL, true)], // White (Mirrored + Mat)
|
||||||
[MG_PAWN_TABLE, EG_PAWN_TABLE] // Black (Ist bereits korrekt für schwarze Indices)
|
[prepare_table(MG_PAWN_TABLE, MG_PAWN_VAL, false), prepare_table(EG_PAWN_TABLE, EG_PAWN_VAL, false)] // Black (Normal + Mat)
|
||||||
],
|
],
|
||||||
// 2. KNIGHT
|
// 2. KNIGHT
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_KNIGHT_TABLE), mirror_psqt(EG_KNIGHT_TABLE)], // White
|
[prepare_table(MG_KNIGHT_TABLE, MG_KNIGHT_VAL, true), prepare_table(EG_KNIGHT_TABLE, EG_KNIGHT_VAL, true)],
|
||||||
[MG_KNIGHT_TABLE, EG_KNIGHT_TABLE] // Black
|
[prepare_table(MG_KNIGHT_TABLE, MG_KNIGHT_VAL, false), prepare_table(EG_KNIGHT_TABLE, EG_KNIGHT_VAL, false)]
|
||||||
],
|
],
|
||||||
// 3. BISHOP
|
// 3. BISHOP
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_BISHOP_TABLE), mirror_psqt(EG_BISHOP_TABLE)], // White
|
[prepare_table(MG_BISHOP_TABLE, MG_BISHOP_VAL, true), prepare_table(EG_BISHOP_TABLE, EG_BISHOP_VAL, true)],
|
||||||
[MG_BISHOP_TABLE, EG_BISHOP_TABLE] // Black
|
[prepare_table(MG_BISHOP_TABLE, MG_BISHOP_VAL, false), prepare_table(EG_BISHOP_TABLE, EG_BISHOP_VAL, false)]
|
||||||
],
|
],
|
||||||
// 4. ROOK
|
// 4. ROOK
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_ROOK_TABLE), mirror_psqt(EG_ROOK_TABLE)], // White
|
[prepare_table(MG_ROOK_TABLE, MG_ROOK_VAL, true), prepare_table(EG_ROOK_TABLE, EG_ROOK_VAL, true)],
|
||||||
[MG_ROOK_TABLE, EG_ROOK_TABLE] // Black
|
[prepare_table(MG_ROOK_TABLE, MG_ROOK_VAL, false), prepare_table(EG_ROOK_TABLE, EG_ROOK_VAL, false)]
|
||||||
],
|
],
|
||||||
// 5. QUEEN
|
// 5. QUEEN
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_QUEEN_TABLE), mirror_psqt(EG_QUEEN_TABLE)], // White
|
[prepare_table(MG_QUEEN_TABLE, MG_QUEEN_VAL, true), prepare_table(EG_QUEEN_TABLE, EG_QUEEN_VAL, true)],
|
||||||
[MG_QUEEN_TABLE, EG_QUEEN_TABLE] // Black
|
[prepare_table(MG_QUEEN_TABLE, MG_QUEEN_VAL, false), prepare_table(EG_QUEEN_TABLE, EG_QUEEN_VAL, false)]
|
||||||
],
|
],
|
||||||
// 6. KING
|
// 6. KING
|
||||||
[
|
[
|
||||||
[mirror_psqt(MG_KING_TABLE), mirror_psqt(EG_KING_TABLE)], // White
|
[prepare_table(MG_KING_TABLE, MG_KING_VAL, true), prepare_table(EG_KING_TABLE, EG_KING_VAL, true)],
|
||||||
[MG_KING_TABLE, EG_KING_TABLE] // Black
|
[prepare_table(MG_KING_TABLE, MG_KING_VAL, false), prepare_table(EG_KING_TABLE, EG_KING_VAL, false)]
|
||||||
],
|
],
|
||||||
];
|
];
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue