shithub: moonfish

Info  •  Files  •  Log  •  Branches

fix checkmate handling

--- a/main.c

+++ b/main.c

@@ -145,13 +145,8 @@

 			else

 				score = moonfish_best_move_clock(&chess, &move, our_time, their_time);

-			if (depth < 0) depth = 4;

-			printf("info depth %d ", depth);

-			

-			if (score >= moonfish_omega || score <= -moonfish_omega)

-				printf("score mate %d\n", moonfish_countdown(score));

-			else

-				printf("score cp %ld\n", score);

+			if (depth < 0) depth = 1;

+			printf("info depth %d score cp %ld\n", depth, score / 100);

 			moonfish_to_uci(&chess, &move, name);

 			printf("bestmove %s\n", name);

--- a/moonfish.h

+++ b/moonfish.h

@@ -159,10 +159,6 @@

 /* returns the depth-zero score for the given position */

 moonfish_t moonfish_score(struct moonfish_chess *chess);

-/* if a score is too large (i.e. "score >= moonfish_omega"), it will instead represent a "checkmate in X" evaluation */

-/* this function will obtain such "X" from the given score in that case */

-int moonfish_countdown(int score);

-

 /* creates a move from UCI notation */

 /* the move is stored in "move" */

 /* on success, the parser will return 0, on failure, it will return 1 (and the move is unusable) */

--- a/search.c

+++ b/search.c

@@ -123,7 +123,7 @@

 	for (i = 0 ; i < count ; i++)

 		if (chess->board[moves[i].to] % 16 == moonfish_king)

-			return moonfish_omega * (moonfish_depth - depth);

+			return moonfish_omega * (moonfish_depth + depth);

 	for (i = 0 ; i < count ; i++)

 	{

@@ -143,18 +143,6 @@

 	return alpha;

 }

-

-#ifndef moonfish_mini

-

-int moonfish_countdown(int score)

-{

-	score /= moonfish_omega;

-	if (score < 0) score -= moonfish_depth + 1;

-	else score += moonfish_depth;

-	return score / 2;

-}

-

-#endif

 static moonfish_result_t moonfish_start_search(void *data)

 {

-- 

⑨