diff --git a/sql/cambios.sql b/sql/cambios.sql
index ef9640cb9..e5f1fb4a2 100644
--- a/sql/cambios.sql
+++ b/sql/cambios.sql
@@ -12872,3 +12872,10 @@ SELECT UNIX_TIMESTAMP(MIN(StartTime)),UNIX_TIMESTAMP(MAX(EndTime)) FROM gam_matc
 
 
 SELECT MchCod,GamCod,UsrCod,UNIX_TIMESTAMP(StartTime),UNIX_TIMESTAMP(EndTime),Title,QstInd,QstCod,UNIX_TIMESTAMP(QstStartTime),ShowingAnswers,Finished FROM gam_matches WHERE GamCod=7 ORDER BY MchCod;
+
+
+REPLACE gam_time (MchCod,QstInd,ElapsedTime) VALUES (61,1,ADDTIME(ElapsedTime,SEC_TO_TIME(1)));
+
+INSERT INTO gam_time (MchCod,QstInd) VALUES (61,1,SEC_TO_TIME(1)) ON DUPLICATE KEY UPDATE ElapsedTime=ADDTIME(ElapsedTime,SEC_TO_TIME(1));
+  
+  
diff --git a/sql/swad.sql b/sql/swad.sql
index 4f344d22e..268857379 100644
--- a/sql/swad.sql
+++ b/sql/swad.sql
@@ -667,6 +667,14 @@ CREATE TABLE IF NOT EXISTS gam_questions (
 	INDEX(GamCod),
 	INDEX(QstCod));
 --
+-- Table gam_time: stores the elapsed time in every question in every match played
+--
+CREATE TABLE IF NOT EXISTS gam_time (
+	MchCod INT NOT NULL,
+	QstInd INT NOT NULL,
+	ElapsedTime TIME NOT NULL DEFAULT 0,
+	UNIQUE INDEX(MchCod,QstInd));
+--
 -- Table hidden_params: stores some hidden parameters passed from a page to another using database instead of forms
 --
 CREATE TABLE IF NOT EXISTS hidden_params (
diff --git a/swad_changelog.h b/swad_changelog.h
index c5a410a26..29b375181 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -460,12 +460,15 @@ En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
 
-#define Log_PLATFORM_VERSION	"SWAD 18.138.6 (2019-08-02)"
+#define Log_PLATFORM_VERSION	"SWAD 18.139 (2019-08-03)"
 #define CSS_FILE		"swad18.138.css"
 #define JS_FILE			"swad18.130.2.js"
 /*
-	Version 18.138.7: Aug 01, 2019	Time of current match and current match question are stored in database. (? lines)
-	Version 18.138.6: Aug 02, 2019	Matches finished can be played again from list of matches. (? lines)
+	Version 18.139:   Aug 03, 2019	Time of current match and current match question are stored in database. (244150 lines)
+					1 change necessary in database:
+CREATE TABLE IF NOT EXISTS gam_time (MchCod INT NOT NULL,QstInd INT NOT NULL,ElapsedTime TIME NOT NULL DEFAULT 0,UNIQUE INDEX(MchCod,QstInd));
+
+	Version 18.138.6: Aug 02, 2019	Matches finished can be played again from list of matches. (244102 lines)
 	Version 18.138.5: Aug 01, 2019	Finished column in matches replaced by a special value in question index. (244108 lines)
 					1 change necessary in database:
 ALTER TABLE gam_matches DROP COLUMN Finished;
diff --git a/swad_database.c b/swad_database.c
index cbe34fc83..ecc749afe 100644
--- a/swad_database.c
+++ b/swad_database.c
@@ -1452,6 +1452,24 @@ mysql> DESCRIBE gam_questions;
 		   "INDEX(GamCod),"
 		   "INDEX(QstCod))");
 
+      /***** Table gam_time *****/
+/*
+mysql> DESCRIBE gam_time;
++-------------+---------+------+-----+----------+-------+
+| Field       | Type    | Null | Key | Default  | Extra |
++-------------+---------+------+-----+----------+-------+
+| MchCod      | int(11) | NO   | PRI | NULL     |       |
+| QstInd      | int(11) | NO   | PRI | NULL     |       |
+| ElapsedTime | time    | NO   |     | 00:00:00 |       |
++-------------+---------+------+-----+----------+-------+
+3 rows in set (0.00 sec)
+*/
+   DB_CreateTable ("CREATE TABLE IF NOT EXISTS gam_time ("
+			"MchCod INT NOT NULL,"
+			"QstInd INT NOT NULL,"
+			"ElapsedTime TIME NOT NULL DEFAULT 0,"
+		   "UNIQUE INDEX(MchCod,QstInd))");
+
    /***** Table hidden_params *****/
 /*
 mysql> DESCRIBE hidden_params;
diff --git a/swad_game.c b/swad_game.c
index 18a1aa570..d54a5aab9 100644
--- a/swad_game.c
+++ b/swad_game.c
@@ -187,6 +187,7 @@ static void Gam_PutFormNewMatch (struct Game *Game);
 
 static long Gam_CreateMatch (long GamCod,char Title[Gam_MAX_BYTES_TITLE + 1]);
 static void Gam_UpdateMatchStatusInDB (struct Match *Match);
+static void Gam_UpdateElapsedTimeInQuestion (struct Match *Match);
 
 static void Gam_SetMatchStatusToPrevQuestion (struct Match *Match);
 static void Gam_SetMatchStatusToNextQuestion (struct Match *Match);
@@ -3342,6 +3343,26 @@ static void Gam_UpdateMatchStatusInDB (struct Match *Match)
       Gam_SetMatchAsNotBeingPlayed (Match->MchCod);
   }
 
+/*****************************************************************************/
+/** Update elapsed time in current question (by a teacher) **/
+/*****************************************************************************/
+
+static void Gam_UpdateElapsedTimeInQuestion (struct Match *Match)
+  {
+   /***** Update elapsed time in current question in database *****/
+   if (Match->Status.BeingPlayed &&
+       Match->Status.QstInd > 0 &&
+       Match->Status.QstInd < Gam_AFTER_LAST_QUESTION)
+      DB_QueryINSERT ("can not update elapsed time in question",
+		      "INSERT INTO gam_time (MchCod,QstInd,ElapsedTime)"
+		      " VALUES (%ld,%u,SEC_TO_TIME(%u))"
+		      " ON DUPLICATE KEY"
+		      " UPDATE ElapsedTime=ADDTIME(ElapsedTime,SEC_TO_TIME(%u))",
+		      Match->MchCod,Match->Status.QstInd,
+		      Cfg_SECONDS_TO_REFRESH_GAME,
+		      Cfg_SECONDS_TO_REFRESH_GAME);
+  }
+
 /*****************************************************************************/
 /** Show current match status (current question, answers...) (by a teacher) **/
 /*****************************************************************************/
@@ -4168,6 +4189,9 @@ void Gam_RefreshMatchTch (void)
    /***** Update match status in database *****/
    Gam_UpdateMatchStatusInDB (&Match);
 
+   /***** Update elapsed time in this question *****/
+   Gam_UpdateElapsedTimeInQuestion (&Match);
+
    /***** Show current match status *****/
    Gam_ShowMatchStatusForTch (&Match);
   }