diff --git a/cockatrice/cockatrice.pro b/cockatrice/cockatrice.pro
index a6885d71..0862062d 100644
--- a/cockatrice/cockatrice.pro
+++ b/cockatrice/cockatrice.pro
@@ -69,7 +69,7 @@ HEADERS += src/counter.h \
 	../common/protocol_items.h \
 	../common/protocol_datastructures.h \
 	../common/rng_abstract.h \
-	../common/rng_qt.h \
+	../common/rng_sfmt.h \
 	../common/server.h \
 	../common/server_arrow.h \
 	../common/server_card.h \
@@ -142,7 +142,8 @@ SOURCES += src/counter.cpp \
 	../common/protocol_items.cpp \
 	../common/protocol_datastructures.cpp \
 	../common/rng_abstract.cpp \
-	../common/rng_qt.cpp \
+	../common/rng_sfmt.cpp \
+	../common/sfmt/SFMT.c \
 	../common/server.cpp \
 	../common/server_card.cpp \
 	../common/server_cardzone.cpp \
diff --git a/common/rng_abstract.cpp b/common/rng_abstract.cpp
index eb2e38ac..229d2592 100644
--- a/common/rng_abstract.cpp
+++ b/common/rng_abstract.cpp
@@ -1,4 +1,33 @@
 #include "rng_abstract.h"
 #include "rng_qt.h"
+#include "rng_sfmt.h"
+#include <QDebug>
 
-RNG_Abstract *rng = new RNG_Qt;
+RNG_Abstract *rng = new RNG_SFMT;
+
+QVector<int> RNG_Abstract::makeNumbersVector(int n, int min, int max)
+{
+	const int bins = max - min + 1;
+	QVector<int> result(bins);
+	for (int i = 0; i < n; ++i) {
+		int number = getNumber(min, max);
+		if ((number < min) || (number > max))
+			qDebug() << "getNumber(" << min << "," << max << ") returned " << number;
+		else
+			result[number - min]++;
+	}
+	return result;
+}
+
+double RNG_Abstract::testRandom(const QVector<int> &numbers) const
+{
+	int n = 0;
+	for (int i = 0; i < numbers.size(); ++i)
+		n += numbers[i];
+	double expected = (double) n / (double) numbers.size();
+	double chisq = 0;
+	for (int i = 0; i < numbers.size(); ++i)
+		chisq += ((double) numbers[i] - expected) * ((double) numbers[i] - expected) / expected;
+	
+	return chisq;
+}
diff --git a/common/rng_abstract.h b/common/rng_abstract.h
index 739efeb3..5d60033f 100644
--- a/common/rng_abstract.h
+++ b/common/rng_abstract.h
@@ -2,12 +2,15 @@
 #define RNG_ABSTRACT_H
 
 #include <QObject>
+#include <QVector>
 
 class RNG_Abstract : public QObject {
 	Q_OBJECT
 public:
 	RNG_Abstract(QObject *parent = 0) : QObject(parent) { }
 	virtual unsigned int getNumber(unsigned int min, unsigned int max) = 0;
+	QVector<int> makeNumbersVector(int n, int min, int max);
+	double testRandom(const QVector<int> &numbers) const;
 };
 
 extern RNG_Abstract *rng;
diff --git a/common/rng_qt.cpp b/common/rng_qt.cpp
index 30cb8b34..6704cdb8 100644
--- a/common/rng_qt.cpp
+++ b/common/rng_qt.cpp
@@ -6,7 +6,6 @@ RNG_Qt::RNG_Qt(QObject *parent)
 	: RNG_Abstract(parent)
 {
 	int seed = QDateTime::currentDateTime().toTime_t();
-	qDebug(QString("qsrand(%1)").arg(seed).toLatin1());
 	qsrand(seed);
 }
 
diff --git a/servatrice/servatrice.pro b/servatrice/servatrice.pro
index 60879067..60f04b7c 100755
--- a/servatrice/servatrice.pro
+++ b/servatrice/servatrice.pro
@@ -20,7 +20,7 @@ HEADERS += src/servatrice.h \
 	../common/protocol_items.h \
 	../common/protocol_datastructures.h \
 	../common/rng_abstract.h \
-	../common/rng_qt.h \
+	../common/rng_sfmt.h \
 	../common/server.h \
 	../common/server_arrow.h \
 	../common/server_card.h \
@@ -41,7 +41,8 @@ SOURCES += src/main.cpp \
 	../common/protocol_items.cpp \
 	../common/protocol_datastructures.cpp \
 	../common/rng_abstract.cpp \
-	../common/rng_qt.cpp \
+	../common/rng_sfmt.cpp \
+	../common/sfmt/SFMT.c \
 	../common/server.cpp \
 	../common/server_card.cpp \
 	../common/server_cardzone.cpp \
diff --git a/servatrice/src/main.cpp b/servatrice/src/main.cpp
index 6294aa6d..2d16cb20 100644
--- a/servatrice/src/main.cpp
+++ b/servatrice/src/main.cpp
@@ -20,7 +20,9 @@
 
 #include <QCoreApplication>
 #include <QTextCodec>
+#include <iostream>
 #include "servatrice.h"
+#include "rng_abstract.h"
 
 void myMessageOutput(QtMsgType /*type*/, const char *msg)
 {
@@ -31,6 +33,41 @@ void myMessageOutput(QtMsgType /*type*/, const char *msg)
 	fflush(f);
 }
 
+void testRNG()
+{
+	const int n = 500000;
+	std::cerr << "Testing random number generator (n = " << n << " * bins)..." << std::endl;
+	
+	const int min = 1;
+	const int minMax = 2;
+	const int maxMax = 10;
+	
+	QVector<QVector<int> > numbers(maxMax - minMax + 1);
+	QVector<double> chisq(maxMax - minMax + 1);
+	for (int max = minMax; max <= maxMax; ++max) {
+		numbers[max - minMax] = rng->makeNumbersVector(n * (max - min + 1), min, max);
+		chisq[max - minMax] = rng->testRandom(numbers[max - minMax]);
+	}
+	qDebug() << numbers;
+	for (int i = 0; i <= maxMax - min; ++i) {
+		std::cerr << (min + i);
+		for (int j = 0; j < numbers.size(); ++j) {
+			if (i < numbers[j].size())
+				std::cerr << "\t" << numbers[j][i];
+			else
+				std::cerr << "\t";
+		}
+		std::cerr << std::endl;
+	}
+	std::cerr << std::endl << "Chi^2 =";
+	for (int j = 0; j < chisq.size(); ++j)
+		std::cerr << "\t" << QString::number(chisq[j], 'f', 3).toStdString();
+	std::cerr << std::endl << "k =";
+	for (int j = 0; j < chisq.size(); ++j)
+		std::cerr << "\t" << (j - min + minMax);
+	std::cerr << std::endl << std::endl;
+}
+
 int main(int argc, char *argv[])
 {
 	qInstallMsgHandler(myMessageOutput);
@@ -40,8 +77,16 @@ int main(int argc, char *argv[])
 	app.setApplicationName("Servatrice");
 	
 	QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
+	
+	std::cerr << "Servatrice " << Servatrice::versionString.toStdString() << " starting." << std::endl;
+	std::cerr << "-------------------------" << std::endl;
 
+	testRNG();
+	
 	Servatrice server;
 	
+	std::cerr << "-------------------------" << std::endl;
+	std::cerr << "Server initialized." << std::endl;
+	
 	return app.exec();
 }
diff --git a/servatrice/src/servatrice.cpp b/servatrice/src/servatrice.cpp
index 74d1966d..66774339 100644
--- a/servatrice/src/servatrice.cpp
+++ b/servatrice/src/servatrice.cpp
@@ -139,4 +139,4 @@ AuthenticationResult Servatrice::checkUserPassword(const QString &user, const QS
 		return UnknownUser;
 }
 
-const QString Servatrice::versionString = "Servatrice 0.20100603";
+const QString Servatrice::versionString = "Servatrice 0.20100915";