- Move move;
-
- while (true)
- {
- while (cur == endMoves)
- generate_next_stage();
-
- switch (stage) {
-
- case MAIN_SEARCH: case EVASION: case QSEARCH_0: case QSEARCH_1: case PROBCUT:
- ++cur;
- return ttMove;
-
- case CAPTURES_S1:
- move = pick_best(cur++, endMoves);
- if (move != ttMove)
- {
- if (pos.see_sign(move) >= VALUE_ZERO)
- return move;
-
- // Losing capture, move it to the tail of the array
- (endBadCaptures--)->move = move;
- }
- break;
-
- case KILLERS_S1:
- move = *cur++;
- if ( move != MOVE_NONE
- && move != ttMove
- && pos.pseudo_legal(move)
- && !pos.capture(move))
- return move;
- break;
-
- case QUIETS_1_S1: case QUIETS_2_S1:
- move = *cur++;
- if ( move != ttMove
- && move != killers[0].move
- && move != killers[1].move
- && move != killers[2].move
- && move != killers[3].move
- && move != killers[4].move
- && move != killers[5].move)
- return move;
- break;
-
- case BAD_CAPTURES_S1:
- return *cur--;
-
- case EVASIONS_S2: case CAPTURES_S3: case CAPTURES_S4:
- move = pick_best(cur++, endMoves);
- if (move != ttMove)
- return move;
- break;
-
- case CAPTURES_S5:
- move = pick_best(cur++, endMoves);
- if (move != ttMove && pos.see(move) > captureThreshold)
- return move;
- break;
-
- case CAPTURES_S6:
- move = pick_best(cur++, endMoves);
- if (to_sq(move) == recaptureSquare)
- return move;
- break;
-
- case QUIET_CHECKS_S3:
- move = *cur++;
- if (move != ttMove)
- return move;
- break;
-
- case STOP: