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@SamuraiDangyo
SamuraiDangyo authored Dec 12, 2022
1 parent 3494333 commit 8610123
Showing 1 changed file with 130 additions and 82 deletions.
212 changes: 130 additions & 82 deletions mayhem.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -118,54 +118,102 @@ constexpr int kPestoMaterial[2][6] = {

// [Piece][Phase][Square]
constexpr int kPestoPsqt[6][2][64] = {
{{ 0, 0, 0, 0, 0, 0, 0, 0, -35, -1, -20, -23, -15, 24, 38, -22, // Pawn (MG)
-26, -4, -4, -10, 3, 3, 33, -12, -27, -2, -5, 12, 17, 6, 10, -25,
-14, 13, 6, 21, 23, 12, 17, -23, -6, 7, 26, 31, 65, 56, 25, -20,
98, 134, 61, 95, 68, 126, 34, -11, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 13, 8, 8, 10, 13, 0, 2, -7, // Pawn (EG)
4, 7, -6, 1, 0, -5, -1, -8, 13, 9, -3, -7, -7, -8, 3, -1,
32, 24, 13, 5, -2, 4, 17, 17, 94, 100, 85, 67, 56, 53, 82, 84,
178, 173, 158, 134, 147, 132, 165, 187, 0, 0, 0, 0, 0, 0, 0, 0 }},
{{-105, -21, -58, -33, -17, -28, -19, -23, -29, -53, -12, -3, -1, 18, -14, -19, // Knight (MG)
-23, -9, 12, 10, 19, 17, 25, -16, -13, 4, 16, 13, 28, 19, 21, -8,
-9, 17, 19, 53, 37, 69, 18, 22, -47, 60, 37, 65, 84, 129, 73, 44,
-73, -41, 72, 36, 23, 62, 7, -17,-167, -89, -34, -49, 61, -97, -15,-107 },
{ -29, -51, -23, -15, -22, -18, -50, -64, -42, -20, -10, -5, -2, -20, -23, -44, // Knight (EG)
-23, -3, -1, 15, 10, -3, -20, -22, -18, -6, 16, 25, 16, 17, 4, -18,
-17, 3, 22, 22, 22, 11, 8, -18, -24, -20, 10, 9, -1, -9, -19, -41,
-25, -8, -25, -2, -9, -25, -24, -52, -58, -38, -13, -28, -31, -27, -63, -99 }},
{{ -33, -3, -14, -21, -13, -12, -39, -21, 4, 15, 16, 0, 7, 21, 33, 1, // Bishop (MG)
0, 15, 15, 15, 14, 27, 18, 10, -6, 13, 13, 26, 34, 12, 10, 4,
-4, 5, 19, 50, 37, 37, 7, -2, -16, 37, 43, 40, 35, 50, 37, -2,
-26, 16, -18, -13, 30, 59, 18, -47, -29, 4, -82, -37, -25, -42, 7, -8 },
{ -23, -9, -23, -5, -9, -16, -5, -17, -14, -18, -7, -1, 4, -9, -15, -27, // Bishop (EG)
-12, -3, 8, 10, 13, 3, -7, -15, -6, 3, 13, 19, 7, 10, -3, -9,
-3, 9, 12, 9, 14, 10, 3, 2, 2, -8, 0, -1, -2, 6, 0, 4,
-8, -4, 7, -12, -3, -13, -4, -14, -14, -21, -11, -8, -7, -9, -17, -24 }},
{{ -19, -13, 1, 17, 16, 7, -37, -26, -44, -16, -20, -9, -1, 11, -6, -71, // Rook (MG)
-45, -25, -16, -17, 3, 0, -5, -33, -36, -26, -12, -1, 9, -7, 6, -23,
-24, -11, 7, 26, 24, 35, -8, -20, -5, 19, 26, 36, 17, 45, 61, 16,
27, 32, 58, 62, 80, 67, 26, 44, 32, 42, 32, 51, 63, 9, 31, 43 },
{ -9, 2, 3, -1, -5, -13, 4, -20, -6, -6, 0, 2, -9, -9, -11, -3, // Rook (EG)
-4, 0, -5, -1, -7, -12, -8, -16, 3, 5, 8, 4, -5, -6, -8, -11,
4, 3, 13, 1, 2, 1, -1, 2, 7, 7, 7, 5, 4, -3, -5, -3,
11, 13, 13, 11, -3, 3, 8, 3, 13, 10, 18, 15, 12, 12, 8, 5 }},
{{ -1, -18, -9, 10, -15, -25, -31, -50, -35, -8, 11, 2, 8, 15, -3, 1, // Queen (MG)
-14, 2, -11, -2, -5, 2, 14, 5, -9, -26, -9, -10, -2, -4, 3, -3,
-27, -27, -16, -16, -1, 17, -2, 1, -13, -17, 7, 8, 29, 56, 47, 57,
-24, -39, -5, 1, -16, 57, 28, 54, -28, 0, 29, 12, 59, 44, 43, 45 },
{ -33, -28, -22, -43, -5, -32, -20, -41, -22, -23, -30, -16, -16, -23, -36, -32, // Queen (EG)
-16, -27, 15, 6, 9, 17, 10, 5, -18, 28, 19, 47, 31, 34, 39, 23,
3, 22, 24, 45, 57, 40, 57, 36, -20, 6, 9, 49, 47, 35, 19, 9,
-17, 20, 32, 41, 58, 25, 30, 0, -9, 22, 22, 27, 27, 19, 10, 20 }},
{{ -15, 36, 12, -54, 8, -28, 24, 14, 1, 7, -8, -64, -43, -16, 9, 8, // King (MG)
-14, -14, -22, -46, -44, -30, -15, -27, -49, -1, -27, -39, -46, -44, -33, -51,
-17, -20, -12, -27, -30, -25, -14, -36, -9, 24, 2, -16, -20, 6, 22, -22,
29, -1, -20, -7, -8, -4, -38, -29, -65, 23, 16, -15, -56, -34, 2, 13 },
{ -53, -34, -21, -11, -28, -14, -24, -43, -27, -11, 4, 13, 14, 4, -5, -17, // King (EG)
-19, -3, 11, 21, 23, 16, 7, -9, -18, -4, 21, 24, 27, 23, 9, -11,
-8, 22, 24, 27, 26, 33, 26, 3, 10, 17, 23, 15, 20, 45, 44, 13,
-12, 17, 14, 17, 17, 38, 23, 11, -74, -35, -18, -18, -11, 15, 4, -17 }}
{{ -55, -54, -53, -52, -52, -53, -54, -55, // Pawn (MG)
-35, -1, -20, -23, -15, 24, 38, -22,
-26, -4, -4, -10, 3, 3, 33, -12,
-27, -2, -5, 12, 17, 6, 10, -25,
-14, 13, 6, 21, 23, 12, 17, -23,
-6, 7, 26, 31, 65, 56, 25, -20,
98, 134, 61, 95, 68, 126, 34, -11,
0, 0, 0, 0, 0, 0, 0, 0 },
{ -55, -54, -53, -52, -52, -53, -54, -55, // Pawn (EG)
13, 8, 8, 10, 13, 0, 2, -7,
4, 7, -6, 1, 0, -5, -1, -8,
13, 9, -3, -7, -7, -8, 3, -1,
32, 24, 13, 5, -2, 4, 17, 17,
94, 100, 85, 67, 56, 53, 82, 84,
178, 173, 158, 134, 147, 132, 165, 187,
0, 0, 0, 0, 0, 0, 0, 0 }},
{{-105, -21, -58, -33, -17, -28, -19, -23, // Knight (MG)
-29, -53, -12, -3, -1, 18, -14, -19,
-23, -9, 12, 10, 19, 17, 25, -16,
-13, 4, 16, 13, 28, 19, 21, -8,
-9, 17, 19, 53, 37, 69, 18, 22,
-47, 60, 37, 65, 84, 129, 73, 44,
-73, -41, 72, 36, 23, 62, 7, -17,
-167, -89, -34, -49, 61, -97, -15,-107 },
{ -29, -51, -23, -15, -22, -18, -50, -64, // Knight (EG)
-42, -20, -10, -5, -2, -20, -23, -44,
-23, -3, -1, 15, 10, -3, -20, -22,
-18, -6, 16, 25, 16, 17, 4, -18,
-17, 3, 22, 22, 22, 11, 8, -18,
-24, -20, 10, 9, -1, -9, -19, -41,
-25, -8, -25, -2, -9, -25, -24, -52,
-58, -38, -13, -28, -31, -27, -63, -99 }},
{{ -33, -3, -14, -21, -13, -12, -39, -21, // Bishop (MG)
4, 15, 16, 0, 7, 21, 33, 1,
0, 15, 15, 15, 14, 27, 18, 10,
-6, 13, 13, 26, 34, 12, 10, 4,
-4, 5, 19, 50, 37, 37, 7, -2,
-16, 37, 43, 40, 35, 50, 37, -2,
-26, 16, -18, -13, 30, 59, 18, -47,
-29, 4, -82, -37, -25, -42, 7, -8 },
{ -23, -9, -23, -5, -9, -16, -5, -17, // Bishop (EG)
-14, -18, -7, -1, 4, -9, -15, -27,
-12, -3, 8, 10, 13, 3, -7, -15,
-6, 3, 13, 19, 7, 10, -3, -9,
-3, 9, 12, 9, 14, 10, 3, 2,
2, -8, 0, -1, -2, 6, 0, 4,
-8, -4, 7, -12, -3, -13, -4, -14,
-14, -21, -11, -8, -7, -9, -17, -24 }},
{{ -19, -13, 1, 17, 16, 7, -37, -26, // Rook (MG)
-44, -16, -20, -9, -1, 11, -6, -71,
-45, -25, -16, -17, 3, 0, -5, -33,
-36, -26, -12, -1, 9, -7, 6, -23,
-24, -11, 7, 26, 24, 35, -8, -20,
-5, 19, 26, 36, 17, 45, 61, 16,
27, 32, 58, 62, 80, 67, 26, 44,
32, 42, 32, 51, 63, 9, 31, 43 },
{ -9, 2, 3, -1, -5, -13, 4, -20, // Rook (EG)
-6, -6, 0, 2, -9, -9, -11, -3,
-4, 0, -5, -1, -7, -12, -8, -16,
3, 5, 8, 4, -5, -6, -8, -11,
4, 3, 13, 1, 2, 1, -1, 2,
7, 7, 7, 5, 4, -3, -5, -3,
11, 13, 13, 11, -3, 3, 8, 3,
13, 10, 18, 15, 12, 12, 8, 5 }},
{{ -1, -18, -9, 10, -15, -25, -31, -50, // Queen (MG)
-35, -8, 11, 2, 8, 15, -3, 1,
-14, 2, -11, -2, -5, 2, 14, 5,
-9, -26, -9, -10, -2, -4, 3, -3,
-27, -27, -16, -16, -1, 17, -2, 1,
-13, -17, 7, 8, 29, 56, 47, 57,
-24, -39, -5, 1, -16, 57, 28, 54,
-28, 0, 29, 12, 59, 44, 43, 45 },
{ -33, -28, -22, -43, -5, -32, -20, -41, // Queen (EG)
-22, -23, -30, -16, -16, -23, -36, -32,
-16, -27, 15, 6, 9, 17, 10, 5,
-18, 28, 19, 47, 31, 34, 39, 23,
3, 22, 24, 45, 57, 40, 57, 36,
-20, 6, 9, 49, 47, 35, 19, 9,
-17, 20, 32, 41, 58, 25, 30, 0,
-9, 22, 22, 27, 27, 19, 10, 20 }},
{{ -15, 36, 12, -54, 8, -28, 24, 14, // King (MG)
1, 7, -8, -64, -43, -16, 9, 8,
-14, -14, -22, -46, -44, -30, -15, -27,
-49, -1, -27, -39, -46, -44, -33, -51,
-17, -20, -12, -27, -30, -25, -14, -36,
-9, 24, 2, -16, -20, 6, 22, -22,
29, -1, -20, -7, -8, -4, -38, -29,
-65, 23, 16, -15, -56, -34, 2, 13 },
{ -53, -34, -21, -11, -28, -14, -24, -43, // King (EG)
-27, -11, 4, 13, 14, 4, -5, -17,
-19, -3, 11, 21, 23, 16, 7, -9,
-18, -4, 21, 24, 27, 23, 9, -11,
-8, 22, 24, 27, 26, 33, 26, 3,
10, 17, 23, 15, 20, 45, 44, 13,
-12, 17, 14, 17, 17, 38, 23, 11,
-74, -35, -18, -18, -11, 15, 4, -17 }}
};

constexpr std::uint64_t kRookMagics[3][64] = {
Expand Down Expand Up @@ -316,7 +364,7 @@ std::uint64_t g_black = 0, g_white = 0, g_both = 0, g_empty = 0, g_good = 0, g_s

int g_move_overhead = MOVEOVERHEAD, g_level = 100, g_root_n = 0, g_king_w = 0, g_king_b = 0, g_moves_n = 0,
g_max_depth = MAX_DEPTH, g_q_depth = 0, g_depth = 0, g_best_score = 0, g_noise = NOISE, g_last_eval = 0,
g_rook_w[2]{}, g_rook_b[2]{}, g_fullmoves = 1, g_nnue_pieces[64]{}, g_nnue_squares[64]{};
g_fullmoves = 1, g_rook_w[2]{}, g_rook_b[2]{}, g_nnue_pieces[64]{}, g_nnue_squares[64]{};

bool g_chess960 = false, g_wtm = false, g_underpromos = true, g_nullmove_active = false,
g_stop_search = false, g_is_pv = false, g_book_exist = false, g_nnue_exist = false,
Expand Down Expand Up @@ -374,17 +422,17 @@ inline int CtzPop(std::uint64_t *b) {

// X axle of board
inline int Xaxl(const int sq) {
return static_cast<int>(sq % 8);
return sq % 8;
}

// Y axle of board
inline int Yaxl(const int sq) {
return static_cast<int>(sq / 8);
return sq / 8;
}

// Nodes Per Second
std::uint64_t Nps(const std::uint64_t nodes, const std::uint64_t ms) {
return static_cast<std::uint64_t>(1000 * nodes) / std::max<std::uint64_t>(1, ms);
return std::uint64_t(1000 * nodes) / std::max<std::uint64_t>(1, ms);
}

// Is (x, y) on board ? Slow, but only for init
Expand All @@ -394,12 +442,12 @@ bool OnBoard(const int x, const int y) {

// X-coord to char
char File2Char(const int f) {
return static_cast<char>('a' + f);
return char('a' + f);
}

// Y-coord to char
char Rank2Char(const int r) {
return static_cast<char>('1' + r);
return char('1' + r);
}

// Convert int coords to string
Expand Down Expand Up @@ -451,9 +499,9 @@ std::uint64_t Random8x64() { // 8x deterministic random for zobrist

// Nondeterministic Rand()
int Random(const int min, const int max) {
static std::uint64_t seed = 0x202c7ULL + static_cast<std::uint64_t>(std::time(nullptr));
static std::uint64_t seed = 0x202c7ULL + std::uint64_t(std::time(nullptr));
seed = (seed << 5) ^ (seed + 1) ^ (seed >> 3);
return min + static_cast<int>(seed % std::max<std::uint64_t>(1, std::abs(max - min) + 1));
return min + int(seed % std::max<std::uint64_t>(1, std::abs(max - min) + 1));
}

// Split string by given str
Expand Down Expand Up @@ -493,7 +541,7 @@ void SetNNUE(const std::string &eval_file) { // nn.nnue

void SetHashtable(int hash_mb) {
hash_mb = std::clamp(hash_mb, 1, 1048576); // Limits 1MB -> 1TB
g_hash_entries = static_cast<std::uint32_t>((1 << 20) * hash_mb) / (sizeof(HashEntry)); // Hash(B) / Block(B)
g_hash_entries = std::uint32_t((1 << 20) * hash_mb) / (sizeof(HashEntry)); // Hash(B) / Block(B)
g_hash.reset(new HashEntry[g_hash_entries]); // Claim space
}

Expand All @@ -514,19 +562,19 @@ inline std::uint64_t Hash(const bool wtm) {
template <MoveType type>
void HashEntry::update(const std::uint64_t hash, const std::uint8_t index) {
if constexpr (type == MoveType::kKiller) {
this->killer_hash = static_cast<std::uint32_t>(hash >> 32);
this->killer_hash = std::uint32_t(hash >> 32);
this->killer = index + 1;
} else { // == MoveType::kGood !
this->good_hash = static_cast<std::uint32_t>(hash >> 32);
this->good_hash = std::uint32_t(hash >> 32);
this->good = index + 1;
}
}

// Best moves put first for maximum cutoffs
void HashEntry::put_hash_value_to_moves(const std::uint64_t hash, Board *moves) const {
if (this->killer && (this->killer_hash == static_cast<std::uint32_t>(hash >> 32)))
if (this->killer && (this->killer_hash == std::uint32_t(hash >> 32)))
moves[this->killer - 1].score += 10000;
if (this->good && (this->good_hash == static_cast<std::uint32_t>(hash >> 32)))
if (this->good && (this->good_hash == std::uint32_t(hash >> 32)))
moves[this->good - 1].score += 7000;
}

Expand Down Expand Up @@ -565,13 +613,13 @@ const std::string Board::to_fen() const {
if (r != 0) s << "/";
}
s << (g_wtm ? " w " : " b ");
if (this->castle & 0x1) s << static_cast<char>('A' + g_rook_w[0]);
if (this->castle & 0x2) s << static_cast<char>('A' + g_rook_w[1]);
if (this->castle & 0x4) s << static_cast<char>('a' + g_rook_b[0] - 56);
if (this->castle & 0x8) s << static_cast<char>('a' + g_rook_b[1] - 56);
if (this->castle & 0x1) s << char('A' + g_rook_w[0]);
if (this->castle & 0x2) s << char('A' + g_rook_w[1]);
if (this->castle & 0x4) s << char('a' + g_rook_b[0] - 56);
if (this->castle & 0x8) s << char('a' + g_rook_b[1] - 56);
s << (this->castle ? " " : "- ");
this->epsq == -1 ? s << "-" : s << static_cast<char>('a' + Xaxl(this->epsq)) << static_cast<char>('1' + Yaxl(this->epsq));
s << " " << static_cast<int>(this->fifty) << " " << static_cast<int>(std::max(1, g_fullmoves));
this->epsq == -1 ? s << "-" : s << char('a' + Xaxl(this->epsq)) << char('1' + Yaxl(this->epsq));
s << " " << int(this->fifty) << " " << int(std::max(1, g_fullmoves));
return s.str();
}

Expand Down Expand Up @@ -1004,15 +1052,15 @@ void MgenCastlingMovesB() {
}

void CheckCastlingRightsW() {
if (g_board->pieces[g_king_w] != +6) {g_board->castle &= 0x4 | 0x8; return;}
if (g_board->pieces[g_rook_w[0]] != +4) {g_board->castle &= 0x2 | 0x4 | 0x8;}
if (g_board->pieces[g_rook_w[1]] != +4) {g_board->castle &= 0x1 | 0x4 | 0x8;}
if (g_board->pieces[g_king_w] != +6) { g_board->castle &= 0x4 | 0x8; return; }
if (g_board->pieces[g_rook_w[0]] != +4) { g_board->castle &= 0x2 | 0x4 | 0x8; }
if (g_board->pieces[g_rook_w[1]] != +4) { g_board->castle &= 0x1 | 0x4 | 0x8; }
}

void CheckCastlingRightsB() {
if (g_board->pieces[g_king_b] != -6) {g_board->castle &= 0x1 | 0x2; return;}
if (g_board->pieces[g_rook_b[0]] != -4) {g_board->castle &= 0x1 | 0x2 | 0x8;}
if (g_board->pieces[g_rook_b[1]] != -4) {g_board->castle &= 0x1 | 0x2 | 0x4;}
if (g_board->pieces[g_king_b] != -6) { g_board->castle &= 0x1 | 0x2; return; }
if (g_board->pieces[g_rook_b[0]] != -4) { g_board->castle &= 0x1 | 0x2 | 0x8; }
if (g_board->pieces[g_rook_b[1]] != -4) { g_board->castle &= 0x1 | 0x2 | 0x4; }
}

void HandleCastlingRights() {
Expand Down Expand Up @@ -1601,8 +1649,8 @@ struct Evaluation {
}

int calculate_score() const { // 78 phases for HCE
const float n = static_cast<float>(std::clamp(this->piece_sum, 0, MAX_PIECES)) / static_cast<float>(MAX_PIECES);
const int s = static_cast<int>(n * static_cast<float>(this->mg) + (1.0f - n) * static_cast<float>(this->eg));
const float n = float(std::clamp(this->piece_sum, 0, MAX_PIECES)) / float(MAX_PIECES);
const int s = int(n * float(this->mg) + (1.0f - n) * float(this->eg));
return (this->score + s) / this->scale_factor;
}

Expand Down Expand Up @@ -1669,7 +1717,7 @@ int EvaluateNNUE(const bool wtm) {
int LevelNoise() { return g_level == 100 ? 0 : Random(-5 * (100 - g_level), +5 * (100 - g_level)); }

// Shuffle period 30 plies then scale
float GetScale() { return g_board->fifty < 30 ? 1.0f : (1.0f - ((static_cast<float>(g_board->fifty - 30)) / 110.0f)); }
float GetScale() { return g_board->fifty < 30 ? 1.0f : (1.0f - ((float(g_board->fifty - 30)) / 110.0f)); }

float GetEval(const bool wtm) { return FixFRC() + (g_classical ? EvaluateClassical(wtm) : EvaluateNNUE(wtm)); }
int Evaluate(const bool wtm) { return LevelNoise() + (EasyDraw(wtm) ? 0 : (GetScale() * GetEval(wtm))); }
Expand Down Expand Up @@ -1762,7 +1810,7 @@ int SearchMovesW(int alpha, const int beta, int depth, const int ply) {
if (moves_n == 1 || (depth == 1 && (checks || g_board->type == 8))) ++depth; // Extend interesting path (SRE / CE / PPE)

const auto ok_lmr = moves_n >= 5 && depth >= 2 && !checks;
auto *entry = &g_hash[static_cast<std::uint32_t>(hash % g_hash_entries)];
auto *entry = &g_hash[std::uint32_t(hash % g_hash_entries)];
entry->put_hash_value_to_moves(hash, g_boards[ply]);

// Tiny speedup since not all moves are scored (lots of pointless shuffling ...)
Expand Down Expand Up @@ -1796,7 +1844,7 @@ int SearchMovesB(const int alpha, int beta, int depth, const int ply) {
if (moves_n == 1 || (depth == 1 && (checks || g_board->type == 8))) ++depth;

const auto ok_lmr = moves_n >= 5 && depth >= 2 && !checks;
auto *entry = &g_hash[static_cast<std::uint32_t>(hash % g_hash_entries)];
auto *entry = &g_hash[std::uint32_t(hash % g_hash_entries)];
entry->put_hash_value_to_moves(hash, g_boards[ply]);

auto sort = true;
Expand Down Expand Up @@ -1832,7 +1880,7 @@ bool TryNullMoveW(int *alpha, const int beta, const int depth, const int ply) {
auto *tmp = g_board;
g_board->epsq = -1;
g_nullmove_active = true;
const auto score = SearchB(*alpha, beta, depth - static_cast<int>(depth / 4 + 3), ply);
const auto score = SearchB(*alpha, beta, depth - int(depth / 4 + 3), ply);
g_nullmove_active = false;
g_board = tmp;
g_board->epsq = ep;
Expand All @@ -1856,7 +1904,7 @@ bool TryNullMoveB(const int alpha, int *beta, const int depth, const int ply) {
auto *tmp = g_board;
g_board->epsq = -1;
g_nullmove_active = true;
const auto score = SearchW(alpha, *beta, depth - static_cast<int>(depth / 4 + 3), ply);
const auto score = SearchW(alpha, *beta, depth - int(depth / 4 + 3), ply);
g_nullmove_active = false;
g_board = tmp;
g_board->epsq = ep;
Expand Down Expand Up @@ -1982,7 +2030,7 @@ struct Material {

// Non-usual piece setups
bool is_weird() const {
if (std::popcount(g_board->white[0]) >= 9 || std::popcount(g_board->black[0]) >= 9) return true; // 8+ pawns
if (std::popcount(g_board->white[0]) >= 9 || std::popcount(g_board->black[0]) >= 9) return true; // 9+ pawns
for (const std::size_t i : {1, 2, 3, 4}) // 3+ [=n, =b, =r, =q]
if (std::popcount(g_board->white[i]) >= 3 || std::popcount(g_board->black[i]) >= 3) return true;
return (0xFF000000000000FFULL & (g_board->white[0] | g_board->black[0])) || // Pawns on 1st or 8th rank
Expand Down Expand Up @@ -2077,7 +2125,7 @@ void ThinkReset() { // Reset search status
}

void Think(const int ms) {
g_stop_search_time = Now() + static_cast<std::uint64_t>(ms); // Start clock early
g_stop_search_time = Now() + std::uint64_t(ms); // Start clock early
ThinkReset();
MgenRoot();
if (FastMove(ms)) return;
Expand Down

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