+#include "thread.h"
+#include "tt.h"
+#include "uci.h"
+#include "syzygy/tbprobe.h"
+
+#include <grpc/grpc.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include "hashprobe.grpc.pb.h"
+
+using grpc::Server;
+using grpc::ServerBuilder;
+using grpc::ServerContext;
+using grpc::Status;
+using grpc::StatusCode;
+using namespace hashprobe;
+
+class HashProbeImpl final : public HashProbe::Service {
+public:
+ Status Probe(ServerContext* context,
+ const HashProbeRequest* request,
+ HashProbeResponse *response) {
+ Position pos(request->fen(), /*isChess960=*/false, Threads.main());
+ if (!pos.pos_is_ok()) {
+ return Status(StatusCode::INVALID_ARGUMENT, "Invalid FEN");
+ }
+
+ bool invert = (pos.side_to_move() == BLACK);
+ Search::StateStackPtr setup_states = Search::StateStackPtr(new std::stack<StateInfo>);
+
+ HashProbeLine *root_line = response->add_line();
+ ProbeMove(&pos, setup_states.get(), invert, root_line);
+
+ MoveList<LEGAL> moves(pos);
+ for (const ExtMove* em = moves.begin(); em != moves.end(); ++em) {
+ HashProbeLine *line = response->add_line();
+ FillMove(em->move, line->mutable_move());
+ setup_states->push(StateInfo());
+ pos.do_move(em->move, setup_states->top(), pos.gives_check(em->move, CheckInfo(pos)));
+ ProbeMove(&pos, setup_states.get(), !invert, line);
+ pos.undo_move(em->move);
+ }
+
+ return Status::OK;
+ }
+
+ void FillMove(Move move, HashProbeMove* decoded) {
+ if (!is_ok(move)) return;
+
+ Square from = from_sq(move);
+ Square to = to_sq(move);