blunders-engine 0.1.0

UCI chess engine core
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

use std::sync::{atomic::AtomicBool, Arc};

use criterion::{black_box, criterion_group, criterion_main, Criterion};

use blunders_engine::coretypes::{Color::*, Move, Square::*};
use blunders_engine::fen::Fen;
use blunders_engine::search::{self, History};
use blunders_engine::timeman::Mode;
use blunders_engine::*;

pub fn criterion_mates_3_sac_knight(c: &mut Criterion) {
    // Setup
    let pos =
        Position::parse_fen("r4rk1/1b3ppp/pp2p3/2p5/P1B1NR1Q/3P3P/2q3P1/7K w - - 0 24").unwrap();
    let history = History::empty();
    let ply = 6;
    let mode = Mode::depth(ply, None);
    let bm = Move::new(E4, F6, None);
    let lead = Some(White);

    // Benchmarks

    c.bench_function("mates_3_sac_knight_alpha_beta", |b| {
        b.iter(|| {
            let result = search::alpha_beta(black_box(pos), black_box(ply));

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_sac_knight_negamax", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let result = search::negamax(black_box(pos), black_box(ply), black_box(&tt));

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_sac_knight_iter_negamax", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let stopper = Arc::new(AtomicBool::new(false));
            let result = search::iterative_negamax(
                black_box(pos),
                black_box(ply),
                black_box(mode),
                black_box(history.clone()),
                black_box(&tt),
                black_box(stopper),
            )
            .unwrap();

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_sac_knight_ids", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let stopper = Arc::new(AtomicBool::new(false));
            let result = search::ids(
                black_box(pos),
                black_box(mode),
                black_box(history.clone()),
                black_box(&tt),
                black_box(stopper),
                false,
            );

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });
}

pub fn criterion_mates_3_knights_and_bishop(c: &mut Criterion) {
    // Setup
    let pos = Position::parse_fen("8/1b5p/1p2NNpk/4P3/p1B4b/P7/KP6/2r5 w - - 7 37").unwrap();
    let ply = 6;
    let history = History::empty();
    let mode = Mode::depth(ply, None);
    let bm = Move::new(F6, G8, None);
    let lead = Some(White);

    // Benchmarks

    c.bench_function("mates_3_knights_and_bishop_alpha_beta", |b| {
        b.iter(|| {
            let result = search::alpha_beta(black_box(pos), black_box(ply));

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_knights_and_bishop_negamax", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let result = search::negamax(black_box(pos), black_box(ply), black_box(&tt));

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_knights_and_bishop_iter_negamax", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let stopper = Arc::new(AtomicBool::new(false));
            let result = search::iterative_negamax(
                black_box(pos),
                black_box(ply),
                black_box(mode),
                black_box(history.clone()),
                black_box(&tt),
                black_box(stopper),
            )
            .unwrap();

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });

    c.bench_function("mates_3_knights_and_bishop_ids", |b| {
        b.iter(|| {
            let tt = TranspositionTable::new();
            let stopper = Arc::new(AtomicBool::new(false));
            let result = search::ids(
                black_box(pos),
                black_box(mode),
                black_box(history.clone()),
                black_box(&tt),
                black_box(stopper),
                false,
            );

            assert_eq!(result.leading(), lead);
            assert_eq!(result.best_move, bm);
        })
    });
}

criterion_group! {
    name = small_benches;
    config = Criterion::default().without_plots().sample_size(30);
    targets = criterion_mates_3_sac_knight, criterion_mates_3_knights_and_bishop
}

criterion_main!(small_benches);