- for (MoveStack* it = moves; it != end; ++it)
- {
- m = it->move;
- if ((seeScore = pos.see_sign(m)) < 0)
- it->score = seeScore - History::Max; // Be sure we are at the bottom
- else if (pos.is_capture(m))
- it->score = PieceValue[MG][pos.piece_on(to_sq(m))]
- - type_of(pos.piece_moved(m)) + History::Max;
- else
- it->score = H[pos.piece_moved(m)][to_sq(m)];
- }
-}
-
-
-/// MovePicker::generate_next() generates, scores and sorts the next bunch of moves,
-/// when there are no more moves to try for the current phase.
-
-void MovePicker::generate_next() {
-
- cur = moves;
-
- switch (++phase) {
-
- case CAPTURES_S1: case CAPTURES_S3: case CAPTURES_S4: case CAPTURES_S5: case CAPTURES_S6:
- end = generate<CAPTURES>(pos, moves);
- score_captures();
- return;
-
- case KILLERS_S1:
- cur = killers;
- end = cur + 2;
- return;
-
- case QUIETS_1_S1:
- endQuiets = end = generate<QUIETS>(pos, moves);
- score_noncaptures();
- end = std::partition(cur, end, has_positive_score);
- sort<MoveStack>(cur, end);
- return;
-
- case QUIETS_2_S1:
- cur = end;
- end = endQuiets;
- if (depth >= 3 * ONE_PLY)
- sort<MoveStack>(cur, end);
- return;
-
- case BAD_CAPTURES_S1:
- // Just pick them in reverse order to get MVV/LVA ordering
- cur = moves + MAX_MOVES - 1;
- end = endBadCaptures;
- return;
-
- case EVASIONS_S2:
- end = generate<EVASIONS>(pos, moves);
- score_evasions();
- return;
-
- case QUIET_CHECKS_S3:
- end = generate<QUIET_CHECKS>(pos, moves);
- return;
-
- case EVASION: case QSEARCH_0: case QSEARCH_1: case PROBCUT: case RECAPTURE:
- phase = STOP;
- case STOP:
- end = cur + 1; // Avoid another next_phase() call
- return;
-
- default:
- assert(false);
- }
-}
-
-
-/// MovePicker::next_move() is the most important method of the MovePicker class.
-/// It returns a new pseudo legal move every time it is called, until there
-/// are no more moves left. It picks the move with the biggest score from a list
-/// of generated moves taking care not to return the tt move if has already been
-/// searched previously.
-template<>
-Move MovePicker::next_move<false>() {