- switch(PhaseTable[phaseIndex]) {
-
- case PH_GOOD_CAPTURES:
- assert(!pos->is_check());
- assert(movesPicked >= 0);
- while(movesPicked < numOfMoves) {
- bestScore = -10000000;
- bestIndex = -1;
- for(int i = movesPicked; i < numOfMoves; i++) {
- if(moves[i].score < 0) {
- // Losing capture, move it to the badCaptures[] array
- assert(numOfBadCaptures < 63);
- badCaptures[numOfBadCaptures++] = moves[i];
- moves[i--] = moves[--numOfMoves];
- }
- else if(moves[i].score > bestScore) {
- bestIndex = i;
- bestScore = moves[i].score;
- }
- }
- if(bestIndex != -1) { // Found a good capture
- MoveStack tmp = moves[movesPicked];
- moves[movesPicked] = moves[bestIndex];
- moves[bestIndex] = tmp;
- move = moves[movesPicked++].move;
- if(move != ttMove && move != mateKiller &&
- pos->move_is_legal(move, pinned))
- return move;
- }
- }
- break;
-
- case PH_NONCAPTURES:
- assert(!pos->is_check());
- assert(movesPicked >= 0);
- while(movesPicked < numOfMoves) {
- bestScore = -10000000;
-
- // If this is a PV node or we have only picked a few moves, scan
- // the entire move list for the best move. If many moves have already
- // been searched and it is not a PV node, we are probably failing low
- // anyway, so we just pick the first move from the list.
- if(pvNode || movesPicked < 12) {
- bestIndex = -1;
- for(int i = movesPicked; i < numOfMoves; i++)
- if(moves[i].score > bestScore) {
- bestIndex = i;
- bestScore = moves[i].score;
+ while (true)
+ {
+ while (curMove == lastMove)
+ go_next_phase();
+
+ switch (phase) {
+
+ case PH_TT_MOVES:
+ move = (curMove++)->move;
+ if ( move != MOVE_NONE
+ && pos.move_is_legal(move, pinned))
+ return move;
+ break;
+
+ case PH_GOOD_CAPTURES:
+ move = pick_best(curMove++, lastMove).move;
+ if ( move != ttMoves[0].move
+ && move != ttMoves[1].move
+ && pos.pl_move_is_legal(move, pinned))
+ {
+ // Check for a non negative SEE now
+ int seeValue = pos.see_sign(move);
+ if (seeValue >= badCaptureThreshold)
+ return move;
+
+ // Losing capture, move it to the tail of the array, note
+ // that move has now been already checked for legality.
+ (--badCaptures)->move = move;
+ badCaptures->score = seeValue;