From a52298970a3114f417f0e814c503d0d829d8ad98 Mon Sep 17 00:00:00 2001
From: Andrey Sofronov <andrey.sofronov@gmail.com>
Date: Sun, 13 Dec 2009 18:27:47 +0200
Subject: [PATCH] * Removed buggy kbpk draw code * Display PV if mate found
 even if depth <= 5

---
 evaluate.c | 39 +--------------------------------------
 iterate.c  |  2 +-
 2 files changed, 2 insertions(+), 39 deletions(-)

diff --git a/evaluate.c b/evaluate.c
index bd96dc7..75721e2 100644
--- a/evaluate.c
+++ b/evaluate.c
@@ -961,44 +961,7 @@ evaluate_mate(int side)
 
 static int evaluate_draw_pattern()
 {
-	int file, square;
-
-	/* KBPK routine */
-	if (!material_pieces[BLACK] && bpc <= 1 && material_pawns[WHITE] && \
-			material_pieces[WHITE] == piece_value[BISHOP] && wbc == 1 && \
-			((PAWNS(WHITE) & file_bit[0]) == PAWNS(WHITE) || (PAWNS(WHITE) & \
-			file_bit[7]) == PAWNS(WHITE))) {
-
-		square = bit_scan(PAWNS(WHITE));
-		file = _FILE(square);
-		
-		if (file == 0 || file == 7) {
-			/* rook pawn */
-			if (file == 0 && (WHITESQUARES & BISHOPS(WHITE)))
-				return FALSE;
-			if (file == 7 && (BLACKSQUARES & BISHOPS(WHITE)))
-				return FALSE;
-			if (distance[brd.kings[BLACK]][file == 0? A8 : H8] <= 1)
-				return TRUE;
-		}
-	} else if (!material_pieces[WHITE] && wpc <= 1 && \
-			material_pieces[BLACK] == piece_value[BISHOP] && bbc == 1 && \
-			((PAWNS(BLACK) & file_bit[0]) == PAWNS(BLACK) || (PAWNS(BLACK) & \
-			file_bit[7]) == PAWNS(BLACK))) {
-		square = bit_scan(PAWNS(BLACK));
-		file = _FILE(square);
-		
-		if (file == 0 || file == 7) {
-			/* rook pawn */
-			if (file == 0 && (BLACKSQUARES & BISHOPS(BLACK)))
-				return FALSE;
-			if (file == 7 && (WHITESQUARES & BISHOPS(BLACK)))
-				return FALSE;
-			if (distance[brd.kings[WHITE]][file == 0? A1 : H1] <= 1)
-				return TRUE;
-		}
-	}
-
+	/* TODO: add real draw code */
 	return FALSE;
 }
 
diff --git a/iterate.c b/iterate.c
index 4aa8cb5..6f68729 100644
--- a/iterate.c
+++ b/iterate.c
@@ -98,7 +98,7 @@ iterate(void)
 				counters.searched_nodes, score >= 0? "+" : "-", \
 				abs(score) / (float)100, get_time() - start_time, pv_string);
 		else if (engine_xboard && get_engine_value(&e.post_mode) && \
-				i_depth > 5)
+				((i_depth > 5) || SCORE_IS_MATE(score)))
 			fprintf(stdout, "%3d %7d %5u %10llu   %s", i_depth, score, \
 				get_time() - start_time, counters.searched_nodes, pv_string);
 
-- 
2.11.4.GIT