Exemple #1
0
        public string __Debug_ChainPrint(GroupedLink P, bool PrintOn = true)
        {
            GroupedLink Q  = P;
            string      st = "";

            if (Q == null)
            {
                st += "null";
            }
            else
            {
                int nc = 0;
                do
                {
                    st = Q.GrLKToString() + st;
                    Q  = Q.preGrpedLink as GroupedLink;
                    if (Q == null)
                    {
                        break;
                    }
                    st = " Бб " + st;
                    if (++nc > 20)
                    {
                        break;
                    }
                }while(true);
            }
            st = $"\tБЯ{++_dbCC}БЯ{st}";
            if (P.UGCellsB.B81.Count == 1)
            {
                st += "БЬБЬБЬ";
            }
            if (PrintOn)
            {
                WriteLine(st);
            }
            return(st);
        }
        //##### There is a bug #####
        public USuperLink Eval_SuperLinkChain(int rc0, int no0, bool Gbreak, int typeSel, bool DevelopB)
        {
            try{
                int dbX = 0;

                USuperLink USLK        = new USuperLink(rc0, no0);
                var        Qtrue       = USLK.Qtrue;
                var        Qfalse      = USLK.Qfalse;
                var        chainDesLKT = USLK.chainDesLKT;
                var        chainDesLKF = USLK.chainDesLKF;
                var        rcQue       = new Queue <GroupedLink>();

                UCell P0   = pBDL[rc0];                 //Origin Cell
                int   no0B = 1 << no0;                  //Origin Digit
                Qtrue[no0].BPSet(rc0);
                GroupedLink GLKnoR0 = new GroupedLink(P0, no0, no0, W, rootF: true);
                GLKnoR0.preGrpedLink  = null;
                chainDesLKT[rc0, no0] = GLKnoR0;

                if ((typeSel & 2) > 0)//====================== Start with WeakLink(origin:rc#no0) ======================
                {
                    foreach (var GLKH in IEGet_SuperLinkFirst(P0, no0).Where(X => X.type == W))
                    {
                        if (DevelopB)
                        {
                            WriteLine("*1st:" + GLKH.GrLKToString());
                        }
                        GLKH.UsedCs      |= GLKH.UGCellsB.B81;                                          //set usedcells(accumulate)
                        GLKH.preGrpedLink = GLKnoR0;                                                    //set pre-GLink
                        rcQue.Enqueue(GLKH);                                                            //enqueue next-GLink to RadiationSearchQueue

                        foreach (var P in GLKH.UGCellsB.Where(p => (p.FreeB & no0B) > 0))
                        {
                            int no2 = GLKH.no2;
                            Qfalse[no2].BPSet(P.rc);                                                            //set p.rc#no2 to false
                            chainDesLKF[P.rc, no2] = GLKH;                                                      //record in retroactive chain
                            if (Gbreak && Qtrue[no2].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], no2))
                            {
                                goto FTBreak;                                                                   //found error
                            }
                            if (P.FreeBC == 2)                                                                  //If the next is a binary cell
                            {
                                int nox = P.FreeB.DifSet(1 << no2).BitToNum();                                  //nox:another digit in the cell
                                Qtrue[nox].BPSet(P.rc);                                                         //P.rc#nox is true
                                GroupedLink GLKbv = new GroupedLink(P, no2, nox, S);                            //GLKbv:GLink in cell
                                GLKbv.preGrpedLink     = GLKH;                                                  //set preLink
                                chainDesLKT[P.rc, nox] = GLKbv;                                                 //record in retroactive chain
                                if (DevelopB)
                                {
                                    WriteLine($"        12 W *Rad->{P}  --#{no2} is false.");
                                }
                                if (Gbreak && Qfalse[nox].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], nox))
                                {
                                    goto FTBreak;                                                                                                         //found error
                                }
                            }
                        }
                    }

                    //S start cell, non-conscious digits
                    foreach (var nox in P0.FreeB.IEGet_BtoNo().Where(n => (n != no0)))              //non-conscious digits in originCell
                    {
                        Qfalse[nox].BPSet(rc0);                                                     // is false
                    }
                }

                if ((typeSel & 1) > 0)//====================== Start with StrongLink(origin:rc#no0) ======================
                {
                    foreach (var GLKH in IEGet_SuperLinkFirst(P0, no0).Where(X => X.type == S))
                    {
                        int         nox     = GLKH.no2;
                        GroupedLink GLKnoR1 = new GroupedLink(P0, no0, nox, W, rootF: false);           //nextGLink
                        GLKnoR1.preGrpedLink  = GLKnoR0;                                                //set pre-GLink to next-GLink
                        chainDesLKF[rc0, nox] = GLKnoR1;                                                //record in retroactive chain

                        GLKH.UsedCs      |= GLKH.UGCellsB.B81;                                          //set usedcells(accumulate)
                        GLKH.preGrpedLink = GLKnoR1;                                                    //set pre-GLink
                        rcQue.Enqueue(GLKH);                                                            //enqueue next-GLink to RadialSearchQueue
                        if (GLKH.UGCellsB.Count == 1)                                                   //if the link's next element is a single cell
                        {
                            int no2 = GLKH.no2;                                                         //no2:next digit
                            var P   = GLKH.UGCellsB[0];                                                 //P:next cell
                            Qtrue[no2].BPSet(P.rc);                                                     //set P.rc#no2 is true
                            chainDesLKT[P.rc, no2] = GLKH;                                              //record in retroactive chain
                            if (Gbreak && Qfalse[no2].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], no2))
                            {
                                goto FTBreak;                                                                 //found error
                            }
                            Qtrue[nox].BPSet(P.rc);                                                           //set P.rc#no is true

                            GroupedLink GLKno = new GroupedLink(P, nox, no2, W);                              //GLKno:GLink in cell
                            GLKno.preGrpedLink     = GLKH;                                                    //set preLink
                            chainDesLKF[P.rc, no2] = GLKno;                                                   //record in retroactive chain
                            if (Gbreak && Qtrue[nox].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], nox))
                            {
                                goto FTBreak;                                                                                                //found error
                            }
                        }
                    }
                }

                //====================== Radiation Search ===============================
                while (rcQue.Count > 0)
                {
                    GroupedLink R = rcQue.Dequeue();                                                                //dequeue next element
                    if (DevelopB)
                    {
                        WriteLine($"{dbX++}---Queue:" + R.GrLKToString());
                    }

                    foreach (var GLKH in IEGet_SuperLink(R))                                    //foreach next GLink
                    {
                        if (DevelopB)
                        {
                            WriteLine($"   {dbX++}--GLKH:" + GLKH.GrLKToString());
                        }
                        if (R.type != GLKH.type && R.UGCellsA.Equals(GLKH.UGCellsB))
                        {
                            continue;                                                                               //Skip back links
                        }
                        GLKH.preGrpedLink = R;                                                                      //set preLink
                        int no2 = GLKH.no2;                                                                         //no2:next digit
                        if (GLKH.type == S)                                                                         //Check connection conditions. case StrongLink
                        {
                            if (!(GLKH.UGCellsB.B81 & Qtrue[GLKH.no2]).IsZero())
                            {
                                continue;                                                                               //if the next element is setted true, go to the next process
                            }
                            if (GLKH.UGCellsB.Count == 1)                                                               //if the link's next element is a single cell
                            {
                                var P = GLKH.UGCellsB[0];                                                               //P:next cell
                                Qtrue[no2].BPSet(P.rc);                                                                 //set P.rc#no2 is true
                                chainDesLKT[P.rc, no2] = GLKH;                                                          //record in retroactive chain
                                if (Gbreak && Qfalse[no2].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], no2))
                                {
                                    goto FTBreak;                                                                                                         //found error
                                }
                                foreach (var nox in P.FreeB.IEGet_BtoNo().Where(q => (q != no2)))
                                {
                                    Qfalse[nox].BPSet(P.rc);                                                                      //set p.rc#no2 to false
                                    GroupedLink GLKno = new GroupedLink(P, no2, nox, W);                                          //GLKbv:GLink in cell(P#no2 WeakLink)
                                    GLKno.preGrpedLink     = GLKH;                                                                //set preLink
                                    chainDesLKF[P.rc, nox] = GLKno;                                                               //record in retroactive chain

                                    if (Gbreak && Qtrue[nox].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], nox))
                                    {
                                        goto FTBreak;                                                                                                            //found error
                                    }
                                    if (DevelopB)
                                    {
                                        WriteLine($"        31S ->P:{P}  --#{nox} is false.");
                                    }
                                }
                            }
                        }
                        if (GLKH.type == W)                                                                         //Check connection conditions. case WeakLink
                        {
                            if (!(GLKH.UGCellsB.B81 & Qfalse[GLKH.no2]).IsZero())
                            {
                                continue;                                                                               //if the next element is setted false, go to the next process
                            }
                            foreach (var P in GLKH.UGCellsB)                                                            //foreach next GLink
                            {
                                Qfalse[no2].BPSet(P.rc);                                                                //set P.rc#no2 is true
                                chainDesLKF[P.rc, no2] = GLKH;                                                          //record in retroactive chain
                                if (Gbreak && Qtrue[no2].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], no2))
                                {
                                    goto FTBreak;                                                                                                        //found error
                                }
                                if (DevelopB)
                                {
                                    WriteLine($"        40S ->P:{P}  ++#{no2} is false.");
                                }
                            }

                            if (GLKH.UGCellsB.Count == 1)                                                               //if the link's next element is a single cell
                            {
                                var P = GLKH.UGCellsB[0];
                                if (P.FreeBC == 2)                                                                            //If the next is a binary cell
                                {
                                    int nox = P.FreeB.DifSet(1 << no2).BitToNum();
                                    Qtrue[nox].BPSet(P.rc);                                                                                   //set P.rc#no2 is true
                                    if (DevelopB)
                                    {
                                        WriteLine($"        41S ->P:{P}  ++#{nox} is true.");
                                    }
                                    GroupedLink GLKno = new GroupedLink(P, no2, nox, S);                                          //GLKbv:GLink in cell(P#no2 StrongLink)
                                    GLKno.preGrpedLink     = GLKH;                                                                //set preLink
                                    chainDesLKT[P.rc, nox] = GLKno;                                                               //record in retroactive chain
                                    if (Gbreak && Qfalse[nox].IsHit(P.rc) && GenMessage2(USLK, pBDL[P.rc], nox))
                                    {
                                        goto FTBreak;                                                                                                             //found error
                                    }
                                }
                            }
                        }
                        rcQue.Enqueue(GLKH);                                                                        //enqueue next-GLink to RadiationSearchQueue
                    }
                }

                USLK.SolFound = true;                                                                       //Solution found
                return(USLK);

FTBreak:        //Failed
                USLK.SolFound = false;
                return(USLK);
            }
            catch (Exception ex) {
                WriteLine($"{ex.Message}+\r{ex.StackTrace}");
            }
            return(null);
        }
        //Search for groupedLink_sequence starting from rc0#no0 as true.
        public USuperLink Eval_SuperLinkChainEx(int rc0, int no0, bool DevelopB)
        {
            try{
                int dbX = 0;
                _dbCC = 0;

                USuperLink GNL_Result  = new USuperLink(rc0, no0);
                var        Qtrue       = GNL_Result.Qtrue;
                var        Qfalse      = GNL_Result.Qfalse;
                var        chainDesLKT = GNL_Result.chainDesLKT;
                var        chainDesLKF = GNL_Result.chainDesLKF;

                var rcQue = new Queue <GroupedLink>();

                UCell P0   = pBDL[rc0];                 //Origin Cell
                int   no0B = 1 << no0;                  //Origin Digit
                Qtrue[no0].BPSet(rc0);

                //P is Cell.  R,RR,RRR is GroupedLink
                {//====================== Start with WeakLink(origin:rc#no0) ======================
                    foreach (var R in IEGet_SuperLinkFirst(P0, no0).Where(X => X.type == W))
                    {
                        if (DevelopB)
                        {
                            Write("*1st:" + R.GrLKToString()); __Debug_ChainPrint(R);
                        }

                        R.UsedCs       = R.UGCellsA.B81;            //set usedcells(accumulate)
                        R.preGrpedLink = null;                      //GLKnoR0;                              //set pre-GLink
                        rcQue.Enqueue(R);                           //enqueue next-GLink to RadiationSearchQueue

                        foreach (var P in R.UGCellsB.Where(p => (p.FreeB & no0B) > 0))
                        {
                            int no2 = R.no2;
                            Qfalse[no2].BPSet(P.rc);                              //set p.rc#no2 to false
                            chainDesLKF[P.rc, no2] = R;                           //��                              //record in retroactive chain
                            if (DevelopB)
                            {
                                WriteLine($"        12 W *Rad->{P}  --#{no2} is false.");
                            }
                        }
                    }
                    foreach (var nox in pBDL[rc0].FreeB.IEGet_BtoNo().Where(p => p != no0))
                    {
                        Qfalse[nox].BPSet(rc0);
                    }
                }

                //====================== Radiation Search ===============================
                while (rcQue.Count > 0)
                {
                    {   //----- Distinct -----
                        var Q2 = rcQue.ToList().Distinct();
                        rcQue.Clear();
                        foreach (var X in Q2)
                        {
                            rcQue.Enqueue(X);
                        }
                        //if(DevelopB){ WriteLine(); foreach(var P in rcQue) WriteLine($"--rcQue---{P.GrLKToString()}"); WriteLine(); }
                    }

                    GroupedLink R = rcQue.Dequeue();                                                         //dequeue next element
                    if (DevelopB)
                    {
                        WriteLine($"\r{dbX++}---Queue:" + R.GrLKToString());
                    }

                    foreach (var RR in IEGet_SuperLink(R).Where(p => p.AvailableF)) //foreach next GLink
                    {
                        RR.preGrpedLink = R;                                        //set preLink
                        if (!(R.UsedCs & RR.UGCellsB.B81).IsZero())
                        {
                            continue;                                                    //Skip by used Cells
                        }
                        if (DevelopB)
                        {
                            WriteLine($"\r   {dbX++}--RR:" + RR.GrLKToString());
                        }

                        RR.UsedCs = R.UsedCs | RR.UGCellsA.B81;
                        if (DevelopB)
                        {
                            __Debug_ChainPrint(RR); WriteLine($"��   {dbX++}-{++chkX}--RR:" + RR.GrLKToString());
                        }

                        int no2 = RR.no2;                               //no2:next digit
                        if (RR.type == S)                               // F->T   *=*=* Check connection conditions. case StrongLink *=*=*
                        {
                            if (RR.UGCellsB.Count == 1)                 //if the link's next element is a single cell
                            {
                                var P = RR.UGCellsB[0];                 //P:next cell
                                if (Qtrue[no2].IsHit(P.rc))
                                {
                                    continue;                                            //Already setted. Eliminate unnecessary trials and speed up.
                                }
                                Qtrue[no2].BPSet(P.rc);                                  //set P.rc#no2 is true
                                chainDesLKT[P.rc, no2] = RR;                             //record in retroactive chain
                                if (DevelopB)
                                {
                                    WriteLine($"        31S ->P:{P}  ++#{no2} is true.");
                                }

                                foreach (var nox in P.FreeB.IEGet_BtoNo().Where(q => (q != no2)))
                                {
                                    Qfalse[nox].BPSet(P.rc);                                                                 //set p.rc#nox to false
                                    if (DevelopB)
                                    {
                                        WriteLine($"        32S ->P:{P}  --#{nox} is false.");
                                    }
                                }
                            }
                        }

                        else if (RR.type == W)                          // T->F   *=*=* Check connection conditions. case WeakLink *=*=*
                        {
                            foreach (var P in RR.UGCellsB)              //foreach next GLink
                            {
                                Qfalse[no2].BPSet(P.rc);                //set P.rc#no2 is false
                                if (DevelopB)
                                {
                                    WriteLine($"        40W ->P:{P}  ++#{no2} is false.");
                                }
                                chainDesLKF[P.rc, no2] = RR;                                                             //record in retroactive chain
                            }

                            if (RR.UGCellsB.Count == 1)                                                              //if the link's next element is a single cell
                            {
                                var P = RR.UGCellsB[0];
                                if (P.FreeBC == 2)                                                                       //If the next is a binary cell
                                {
                                    int nox = P.FreeB.DifSet(1 << no2).BitToNum();
                                    if (Qtrue[nox].IsHit(P.rc))
                                    {
                                        continue;                                        //Already setted. Eliminate unnecessary trials and speed up.
                                    }
                                    Qtrue[nox].BPSet(P.rc);                              //set P.rc#no2 is true
                                    if (DevelopB)
                                    {
                                        WriteLine($"        41W ->P:{P}  ++#{nox} is true.");
                                    }

                                    GroupedLink RRR = new GroupedLink(P, no2, nox, S);                                       //GLKbv:GLink in cell(P#no2 StrongLink)
                                    RRR.preGrpedLink       = RR;                                                             //set preLink
                                    chainDesLKT[P.rc, nox] = RRR;                                                            //record in retroactive chain
                                }
                            }
                        }
                        rcQue.Enqueue(RR);                                                                       //enqueue next-GLink to RadiationSearchQueue                                              //enqueue next-GLink to RadiationSearchQueue
                    }
                }

                GNL_Result.SolFound = true;                                                              //Solution found
                return(GNL_Result);
            }
            catch (Exception ex) {
                WriteLine($"{ex.Message}+\r{ex.StackTrace}");
            }
            return(null);
        }
        public USuperLink GNL_EvalSuperLinkChain(GroupedLink GLK_000, int rc0, bool DevelopB = false)
        {
            try{
                if (DevelopB)
                {
                    WriteLine("\r\r10 *1st:" + GLK_000.GrLKToString()); __Debug_ChainPrint(GLK_000);
                }
                int dbX = 0;
                _dbCC = 0;

                int        no0        = GLK_000.no;
                USuperLink GNL_Result = new USuperLink(rc0, no0);
                var        Qtrue      = GNL_Result.Qtrue;
                var        Qfalse     = GNL_Result.Qfalse;
                Qtrue  = GNL_Result.Qtrue;
                Qfalse = GNL_Result.Qfalse;
                var rcQue = new Queue <GroupedLink>();

                GLK_000.preGrpedLink = null;                                            //sentinel(right GroupedLink's preGrpedLink is null)
                GLK_000.UsedCs       = GLK_000.UGCellsB.B81;                            //Set Used

                int contDiscontF = 0;
                rcQue.Enqueue(GLK_000); //Enqueue first GLK

                {                       //====================== First GLK Process ==============================================================
                    GroupedLink RR = GLK_000;
                    int         no2 = RR.no2, no2B = 1 << no2;
                    if (RR.type == S)                       //---------- Check connection conditions. case StrongLink(F->T) ----------
                    {
                        if (RR.UGCellsB.Count == 1)         //if the link's next element is a single cell
                        {
                            UCell RRnxtC = RR.UGCellsB[0];  //RRnxtC:next cell
                            Qtrue[no2].BPSet(RRnxtC.rc);    //set RRnxtC.rc#no2 is true
                            foreach (int nox in RRnxtC.FreeB.IEGet_BtoNo().Where(q => (q != no2)))
                            {
                                Qfalse[nox].BPSet(RRnxtC.rc);                             //set RRnxtC.rc#no2 to false
                                GroupedLink RRR = new GroupedLink(RRnxtC, no2, nox, W);   //GLK_ViVal:GLink in cell(RRnxtC#no2 WeakLink)
                                RRR.preGrpedLink = RR;                                    //set preLink
                                rcQue.Enqueue(RRR);                                       //enqueue next-GLink to RadiationSearchQueue
                                if (DevelopB)
                                {
                                    WriteLine($"        11 S ->RRnxtC[rc:{RRnxtC.rc}]#{nox} is false."); __Debug_ChainPrint(RRR);
                                }
                            }
                        }
                    }
                    else if (RR.type == W)               //---------- Check connection conditions. case WeakLink(T->F) ----------
                    {
                        foreach (UCell P in RR.UGCellsB) //foreach next GLink
                        {
                            if ((P.FreeB & no2B) > 0)
                            {
                                Qfalse[no2].BPSet(P.rc);                                //set P.rc#no2 is true
                                if (DevelopB)
                                {
                                    WriteLine($"        12 W *Rad->{P}   #{no2} is false.");
                                }
                            }
                        }
                    }
                }

                //====================== Radiation Search ==============================================================
                while (rcQue.Count > 0)
                {
                    {   //----- Distinct -----
                        var Q2 = rcQue.ToList().Distinct();
                        rcQue.Clear();
                        foreach (var X in Q2)
                        {
                            rcQue.Enqueue(X);
                        }
                        //if(DevelopB){ WriteLine(); foreach(var P in rcQue) WriteLine($"--rcQue---{P.GrLKToString()}"); WriteLine(); }
                    }

                    GroupedLink R = rcQue.Dequeue();                                                            //dequeue next element(pre-GLink)
                    if (DevelopB)
                    {
                        WriteLine($"\r20�� {dbX++}---Queue:" + R.GrLKToString()); __Debug_ChainPrint(R);
                    }

                    foreach (GroupedLink RR in IEGet_SuperLink(R).Where(p => p.AvailableF))
                    {
                        if (_IsLooped(RR))
                        {
                            continue;
                        }
                        if (R.type != RR.type && R.UGCellsA.Equals(RR.UGCellsB))
                        {
                            continue;                                                                               //Skip back_links
                        }
                        if (!(R.UsedCs & RR.UGCellsB.B81).IsZero())
                        {
                            continue;
                        }
                        RR.preGrpedLink = R;                                                //set preLink
                        RR.UsedCs       = R.UsedCs | RR.UGCellsB.B81;
                        rcQue.Enqueue(RR);                                                  //enqueue next-GLink to RadiationSearchQueue
                        if (DevelopB)
                        {
                            __Debug_ChainPrint(RR); WriteLine($"��   {dbX++}-{++chkX}--RR:" + RR.GrLKToString());
                        }

                        int no2 = RR.no2; //no2:next digit
                        if (RR.type == S) //========== Check connection conditions. case StrongLink(F->T) ==========
                        //if(!(RR.UGCellsB.B81&Qtrue[RR.no2]).IsZero() )  continue;   //xxx if the next element is already setted true, go to the next process
                        {
                            if (RR.UGCellsB.Count == 1)                                        //if the link's next element is a single cell
                            {
                                UCell P = RR.UGCellsB[0];                                      //RRnxtC:next cell

                                if (P.rc == rc0)                                               //Check Loop completion
                                {
                                    GNL_Result.resultGLK = RR;
                                    SolCode = GroupedNLEx_CheckSolution(GNL_Result, ref contDiscontF);  //There are cells/#n that can be excluded.
                                    if (SolCode > 0)
                                    {
                                        goto  LoopCompletion;                               //Established Sudoku solution
                                    }
                                    goto ErrorTrial;                                        //Failed
                                }

                                if (Qtrue[no2].IsHit(P.rc))
                                {
                                    RR.AvailableF = false; continue;
                                }                                                           //AvailableF=false
                                Qtrue[no2].BPSet(P.rc);                                     // set P.rc#no2 is true
                                if (DevelopB)
                                {
                                    WriteLine($"        30S ->P:{P}  +#{no2} is true.");
                                }

                                foreach (int nox in P.FreeB.IEGet_BtoNo().Where(q => (q != no2)))                               // P.rc#no2:True => #nox(!=no2):False
                                {
                                    if (Qfalse[nox].IsHit(P.rc))
                                    {
                                        continue;
                                    }
                                    Qfalse[nox].BPSet(P.rc);                                //set P.rc#no2 to false
                                    if (DevelopB)
                                    {
                                        WriteLine($"        31S ->P:{P}  -#{nox} is false.");
                                    }
                                }
                            }
                        }

                        else if (RR.type == W)                         //========== Check connection conditions. case WeakLink(T->F) ==========
                        {
                            if (!(RR.UGCellsB.B81 & Qfalse[RR.no2]).IsZero())
                            {
                                continue;                                                                               //if the next element is setted false, go to the next process
                            }
                            foreach (UCell P in RR.UGCellsB)                                                            //foreach next GLink
                            {
                                if (Qfalse[no2].IsHit(P.rc))
                                {
                                    continue;
                                }
                                Qfalse[no2].BPSet(P.rc);                                                                    //set P.rc#no2 is true
                                if (DevelopB)
                                {
                                    WriteLine($"       -40W *RR:{P}  -#{no2} is false.");
                                }
                            }
                            rcQue.Enqueue(RR);                                              //enqueue next-GLink to RadiationSearchQueue

                            if (RR.UGCellsB.Count == 1)                                     //if the link's next element is a single cell
                            {
                                UCell P = RR.UGCellsB[0];
                                if (P.FreeBC == 2)                                                                          //If the next is a binary cell
                                {
                                    int nox = P.FreeB.DifSet(1 << no2).BitToNum();
                                    //if(!_Check_LogicalError_GNL(no2,P.rc,Qtrue) )  goto ErrorTrial; //No check required!
                                    //if(Qtrue[nox].IsHit(P.rc)){ RR.AvailableF=false; continue; }//AvailableF=false. No check required!
                                    Qtrue[nox].BPSet(P.rc);                                   //set P.rc#no2 is true

                                    GroupedLink RRR = new GroupedLink(P, no2, nox, S);        //GLK_ViVal:GLink in cell(P#no2 StrongLink)
                                    RRR.preGrpedLink = RR;                                    //set preLink
                                    if (DevelopB)
                                    {
                                        WriteLine($"       +41W *RR:{P}  -#{nox} is true. :{RRR.GrLKToString()}");
                                    }

                                    if (P.rc == rc0)
                                    {
                                        GNL_Result.resultGLK = RR;
                                        SolCode = GroupedNLEx_CheckSolution(GNL_Result, ref contDiscontF);
                                        if (SolCode > 0)
                                        {
                                            goto  LoopCompletion;                          //Solution found
                                        }
                                        goto ErrorTrial;
                                    }
                                }
                            }
                        }
                    }
                }
                return(null);

ErrorTrial:
                return(null);

LoopCompletion:
                GNL_Result.contDiscontF = contDiscontF;

                if (DevelopB)
                {
                    L2SprLkB81[no0].BPSet(rc0);                                                        // Set the searched flag
                    if (DevelopB)
                    {
                        developDisp(rc0, no0, GNL_Result, DevelopB);
                    }
                    L2SprLK[rc0, no0] = GNL_Result;
                }

                return(GNL_Result);
            }
            catch (Exception ex) {
                WriteLine($"{ex.Message}+\r{ex.StackTrace}");
            }
            return(null);
        }