-void init(const std::string& path);
-int probe_wdl(Position& pos, int *success);
-int probe_dtz(Position& pos, int *success);
-bool root_probe(Position& pos, Search::RootMoves& rootMoves, Value& score);
-bool root_probe_wdl(Position& pos, Search::RootMoves& rootMoves, Value& score);
+void init(const std::string& paths);
+WDLScore probe_wdl(Position& pos, ProbeState* result);
+int probe_dtz(Position& pos, ProbeState* result);
+bool root_probe(Position& pos, Search::RootMoves& rootMoves);
+bool root_probe_wdl(Position& pos, Search::RootMoves& rootMoves);
+void rank_root_moves(Position& pos, Search::RootMoves& rootMoves);
+
+inline std::ostream& operator<<(std::ostream& os, const WDLScore v) {
+
+ os << (v == WDLLoss ? "Loss" :
+ v == WDLBlessedLoss ? "Blessed loss" :
+ v == WDLDraw ? "Draw" :
+ v == WDLCursedWin ? "Cursed win" :
+ v == WDLWin ? "Win" : "None");
+
+ return os;
+}
+
+inline std::ostream& operator<<(std::ostream& os, const ProbeState v) {
+
+ os << (v == FAIL ? "Failed" :
+ v == OK ? "Success" :
+ v == CHANGE_STM ? "Probed opponent side" :
+ v == ZEROING_BEST_MOVE ? "Best move zeroes DTZ" : "None");
+
+ return os;
+}