diff --git a/PHPSkills/TrueSkill/Factors/GaussianFactor.php b/PHPSkills/TrueSkill/Factors/GaussianFactor.php
index 267246c..e868f97 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianFactor.php
@@ -2,6 +2,16 @@
 
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "../../FactorGraphs/Factor.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\FactorGraphs\Factor;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
 abstract class GaussianFactor extends Factor
 {
     protected function __construct($name)
@@ -28,5 +38,4 @@ abstract class GaussianFactor extends Factor
     }
 }
 
-
 ?>
diff --git a/PHPSkills/TrueSkill/Factors/GaussianGreaterThanFactor.php b/PHPSkills/TrueSkill/Factors/GaussianGreaterThanFactor.php
index 8f332a8..b767451 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianGreaterThanFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianGreaterThanFactor.php
@@ -1,6 +1,17 @@
 <?php
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "GaussianFactor.php");
+require_once(dirname(__FILE__) . "../TruncatedGaussianCorrectionFunctions.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
 /// <summary>
 /// Factor representing a team difference that has exceeded the draw margin.
 /// </summary>
diff --git a/PHPSkills/TrueSkill/Factors/GaussianLikelihoodFactor.php b/PHPSkills/TrueSkill/Factors/GaussianLikelihoodFactor.php
index 7927254..a71104f 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianLikelihoodFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianLikelihoodFactor.php
@@ -1,7 +1,15 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "GaussianFactor.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
 /// <summary>
 /// Connects two variables and adds uncertainty.
 /// </summary>
diff --git a/PHPSkills/TrueSkill/Factors/GaussianPriorFactor.php b/PHPSkills/TrueSkill/Factors/GaussianPriorFactor.php
index e4500b9..0276af0 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianPriorFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianPriorFactor.php
@@ -1,7 +1,16 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "GaussianFactor.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
+
 /// <summary>
 /// Supplies the factor graph with prior information.
 /// </summary>
@@ -36,5 +45,4 @@ class GaussianPriorFactor extends GaussianFactor
     }
 }
 
-
 ?>
diff --git a/PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php b/PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php
index e4a3e53..08e365a 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php
@@ -1,7 +1,15 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "GaussianFactor.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
 /// <summary>
 /// Factor that sums together multiple Gaussians.
 /// </summary>
diff --git a/PHPSkills/TrueSkill/Factors/GaussianWithinFactor.php b/PHPSkills/TrueSkill/Factors/GaussianWithinFactor.php
index 28a6822..23d661e 100644
--- a/PHPSkills/TrueSkill/Factors/GaussianWithinFactor.php
+++ b/PHPSkills/TrueSkill/Factors/GaussianWithinFactor.php
@@ -1,7 +1,17 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Factors;
 
+require_once(dirname(__FILE__) . "GaussianFactor.php");
+require_once(dirname(__FILE__) . "../TruncatedGaussianCorrectionFunctions.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Message.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Variable.php");
+require_once(dirname(__FILE__) . "../../Numerics/GaussianDistribution.php");
+
+use Moserware\Numerics\GaussianDistribution;
+use Moserware\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
+use Moserware\Skills\FactorGraphs\Message;
+use Moserware\Skills\FactorGraphs\Variable;
+
 /// <summary>
 /// Factor representing a team difference that has not exceeded the draw margin.
 /// </summary>
diff --git a/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php b/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
index df64058..b427617 100644
--- a/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
+++ b/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
@@ -1,7 +1,15 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Layers;
 
+require_once(dirname(__FILE__) . "TrueSkillFactorGraphLayer.php");
+require_once(dirname(__FILE__) . "TeamPerformancesToTeamPerformanceDifferencesLayer.php");
+require_once(dirname(__FILE__) . "TeamDifferencesComparisonLayer.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Schedule.php");
+
+use Moserware\Skills\FactorGraphs\ScheduleLoop;
+use Moserware\Skills\FactorGraphs\ScheduleSequence;
+use Moserware\Skills\FactorGraphs\ScheduleStep;
+
 // The whole purpose of this is to do a loop on the bottom
 class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
 {
diff --git a/PHPSkills/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php b/PHPSkills/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php
index 580da59..638fcbf 100644
--- a/PHPSkills/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php
+++ b/PHPSkills/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php
@@ -1,7 +1,15 @@
 <?php
-
 namespace Moserware\Skills\TrueSkill\Layers;
 
+require_once(dirname(__FILE__) . "TrueSkillFactorGraphLayer.php");
+require_once(dirname(__FILE__) . "TeamPerformancesToTeamPerformanceDifferencesLayer.php");
+require_once(dirname(__FILE__) . "TeamDifferencesComparisonLayer.php");
+require_once(dirname(__FILE__) . "../../FactorGraphs/Schedule.php");
+
+use Moserware\Skills\FactorGraphs\ScheduleLoop;
+use Moserware\Skills\FactorGraphs\ScheduleSequence;
+use Moserware\Skills\FactorGraphs\ScheduleStep;
+
 class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLayer
 {
     public function __construct(TrueSkillFactorGraph $parentGraph)
diff --git a/PHPSkills/TrueSkill/TrueSkillFactorGraph.php b/PHPSkills/TrueSkill/TrueSkillFactorGraph.php
new file mode 100644
index 0000000..9ceed88
--- /dev/null
+++ b/PHPSkills/TrueSkill/TrueSkillFactorGraph.php
@@ -0,0 +1,141 @@
+<?php
+namespace Moserware\Skills\TrueSkill;
+
+require_once(dirname(__FILE__) . '../Rating.php');
+require_once(dirname(__FILE__) . '../FactorGraphs/FactorList.php');
+require_once(dirname(__FILE__) . '../FactorGraphs/Schedule.php');
+require_once(dirname(__FILE__) . '../FactorGraphs/VariableFactory.php');
+require_once(dirname(__FILE__) . '../Numerics/GaussianDistribution.php');
+require_once(dirname(__FILE__) . '/Layers/PlayerPriorValuesToSkillsLayer.php');
+require_once(dirname(__FILE__) . '/Layers/PlayerSkillsToPerformancesLayer.php');
+require_once(dirname(__FILE__) . '/Layers/IteratedTeamDifferencesInnerLayer.php');
+require_once(dirname(__FILE__) . '/Layers/TeamPerformancesToTeamPerformanceDifferencesLayer.php');
+require_once(dirname(__FILE__) . '/Layers/TeamDifferencesComparisonLayer.php');
+
+use Moserware\Skills\Rating;
+use Moserware\Skills\FactorGraphs\FactorList;
+use Moserware\Skills\FactorGraphs\ScheduleSequence;
+use Moserware\Skills\FactorGraphs\VariableFactory;
+use Moserware\Skills\TrueSkill\Layers\PlayerPriorValuesToSkillsLayer;
+use Moserware\Skills\TrueSkill\Layers\PlayerSkillsToPerformancesLayer;
+use Moserware\Skills\TrueSkill\Layers\IteratedTeamDifferencesInnerLayer;
+use Moserware\Skills\TrueSkill\Layers\TeamPerformancesToTeamPerformanceDifferencesLayer;
+use Moserware\Skills\TrueSkill\Layers\TeamDifferencesComparisonLayer;
+
+class TrueSkillFactorGraph extends FactorGraph
+{
+    private $_gameInfo;
+    private $_layers;
+    private $_priorLayer;
+    private $_variableFactory;
+
+    public function __construct(GameInfo $gameInfo, $teams, array $teamRanks)
+    {
+        $this->_priorLayer = new PlayerPriorValuesToSkillsLayer($this, $teams);
+        $this->_gameInfo = $gameInfo;
+        $this->_variableFactory = new VariableFactory(
+                                        function()
+                                        {
+                                            return GaussianDistribution::fromPrecisionMean(0, 0);
+                                        });
+
+        $this->_layers = array(
+                              $this->_priorLayer,
+                              new PlayerSkillsToPerformancesLayer($this),
+                              new PlayerPerformancesToTeamPerformancesLayer($this),
+                              new IteratedTeamDifferencesInnerLayer(
+                                  $this,
+                                  new TeamPerformancesToTeamPerformanceDifferencesLayer($this),
+                                  new TeamDifferencesComparisonLayer($this, $teamRanks))
+                              );
+    }
+
+    public function getGameInfo()
+    {
+        return $this->_gameInfo;
+    }
+
+    public function buildGraph()
+    {
+        $lastOutput = null;
+
+        foreach ($this->_layers as $currentLayer)
+        {
+            if ($lastOutput != null)
+            {
+                $currentLayer->setInputVariablesGroups($lastOutput);
+            }
+
+            $currentLayer->buildLayer();
+
+            $lastOutput = $currentLayer->getOutputVariablesGroups();
+        }
+    }
+
+    public function runSchedule()
+    {
+        $fullSchedule = $this->createFullSchedule();
+        $fullScheduleDelta = $fullSchedule->visit();
+    }
+
+    public function getProbabilityOfRanking()
+    {
+        $factorList = new FactorList();
+
+        foreach ($this->_layers as $currentLayer)
+        {
+            foreach ($currentLayer->getFactors() as $currentFactor)
+            {
+                $factorList->addFactor($currentFactor);
+            }
+        }
+
+        $logZ = $factorList->getLogNormalization();
+        return exp($logZ);
+    }
+
+    private function createFullSchedule()
+    {
+        $fullSchedule = array();
+
+        foreach ($this->_layers as $currentLayer)
+        {
+            $currentPriorSchedule = $currentLayer->createPriorSchedule();
+            if ($currentPriorSchedule != null)
+            {
+                $fullSchedule->add($currentPriorSchedule);
+            }
+        }
+        
+        $allLayersReverse = \array_reverse($this->_layers);
+
+        foreach ($allLayersReverse as $currentLayer)
+        {
+            $currentPosteriorSchedule = $currentLayer->createPosteriorSchedule();
+            if ($currentPosteriorSchedule != null)
+            {
+                $fullSchedule->add($currentPosteriorSchedule);
+            }
+        }
+
+        return new ScheduleSequence("Full schedule", $fullSchedule);
+    }
+
+    public function getUpdatedRatings()
+    {
+        $result = array();
+
+        foreach ($this->_priorLayer->getOutputVariablesGroups() as $currentTeam)
+        {
+            foreach ($currentTeam as $currentPlayer)
+            {
+                $result[$currentPlayer->getKey()] = new Rating($currentPlayer->getValue()->getMean(),
+                                                               $currentPlayer->getValue()->getStandardDeviation());
+            }
+        }
+
+        return $result;
+    }
+}
+
+?>