Function solve_same_board

library/src/solver_if.cpp:682–808

auto solve_same_board(
  SolverContext& ctx,
  const Deal& dl,
  FutureTricks * futp,
  const int hint) -> int
{
  // Specialized function for SolveChunkDDtable for repeat solves.
  // No further parameter checks! This function makes heavy reuse
  // of parameters that are already stored in various places. It
  // corresponds to:
  // target == -1, solutions == 1, mode == 2.
  // The function only needs to return fut.score[0].

  auto thrp = ctx.thread();
  int ini_depth = ctx.search().ini_depth();
  int trick = (ini_depth + 3) >> 2;
  {
    ctx.search().trick_nodes() = 0;
  }

  thrp->lookAheadPos.first[ini_depth] = dl.first;

  {
    if (dl.first == 0 || dl.first == 2)
    {
      ctx.search().node_type_store(0) = MAXNODE;
      ctx.search().node_type_store(1) = MINNODE;
      ctx.search().node_type_store(2) = MAXNODE;
      ctx.search().node_type_store(3) = MINNODE;
    }
    else
    {
      ctx.search().node_type_store(0) = MINNODE;
      ctx.search().node_type_store(1) = MAXNODE;
      ctx.search().node_type_store(2) = MINNODE;
      ctx.search().node_type_store(3) = MAXNODE;
    }
  }

#ifdef DDS_AB_STATS
  thrp->ABStats.Reset();
  thrp->ABStats.ResetCum();
#endif

#ifdef DDS_TOP_LEVEL
  {
    ctx.search().nodes() = 0;
  }
#endif

  ctx.move_gen().reinit(trick, dl.first);

  int guess = hint;
  int lowerbound = 0;
  int upperbound = 13;

  do
  {