diff --git a/www/data/css/styles.css b/www/data/css/styles.css
index f94af1b..8e0aee5 100644
--- a/www/data/css/styles.css
+++ b/www/data/css/styles.css
@@ -646,6 +646,19 @@ html, body {
         background: #333;
         color: #FFF;
         border: 1px solid black; }
+    .bce_code .bce_code_ctrl .ctrl_btn_group {
+      display: flex;
+      flex-direction: row; }
+    .bce_code .bce_code_ctrl .ctrl_btn_ll {
+      margin-right: 0;
+      flex-grow: 1; }
+    .bce_code .bce_code_ctrl .ctrl_btn_rr {
+      margin-left: 0;
+      flex-grow: 0;
+      min-width: 25px;
+      border-left: none; }
+      .bce_code .bce_code_ctrl .ctrl_btn_rr:hover {
+        border-left: none; }
     .bce_code .bce_code_ctrl .ctrl_btn_disabled {
       background: #999;
       color: #BBB; }
@@ -677,28 +690,36 @@ html, body {
     overflow-x: auto;
     background: #FFF;
     color: #000;
-    flex-grow: 1;
-    margin: 0 4px 4px 4px;
     border: 1px solid #888;
-    height: 200px; }
+    flex-grow: 1; }
   .bce_code_out .bce_code_out_stack {
     font-family: Consolas, Monaco, "Courier New", Menlo, monospace;
     overflow-y: scroll;
     overflow-x: auto;
     background: #FFF;
     color: #000;
-    margin: 0 4px 4px 4px;
-    width: 200px;
     border: 1px solid #888;
-    height: 200px; }
+    flex-grow: 1; }
+  .bce_code_out .bce_code_out_left {
+    flex-grow: 1;
+    margin: 0 4px 4px 4px;
+    height: 200px;
+    display: flex;
+    flex-direction: column; }
+  .bce_code_out .bce_code_out_right {
+    height: 200px;
+    width: 200px;
+    margin: 0 4px 4px 4px;
+    display: flex;
+    flex-direction: column; }
 
 @media (max-width: 767px) {
   .bce_code_out {
     flex-direction: column; }
-    .bce_code_out .bce_code_out_text {
+    .bce_code_out .bce_code_out_left {
       flex-grow: 0;
       height: 100px; }
-    .bce_code_out .bce_code_out_stack {
+    .bce_code_out .b93rnr_outpanel_right {
       width: auto;
       height: 150px; } }
 .b93rnr_outpanel_hidden {
diff --git a/www/data/css/styles_befungerunner.scss b/www/data/css/styles_befungerunner.scss
index 2a617eb..3e789ee 100644
--- a/www/data/css/styles_befungerunner.scss
+++ b/www/data/css/styles_befungerunner.scss
@@ -55,6 +55,14 @@
       }
     }
 
+    .ctrl_btn_group {
+      display: flex;
+      flex-direction: row;
+    }
+
+    .ctrl_btn_ll {margin-right: 0; flex-grow: 1; }
+    .ctrl_btn_rr {margin-left: 0; flex-grow: 0; min-width: 25px; border-left: none; &:hover { border-left: none; } }
+
     .ctrl_btn_disabled       { background: #999; color: #BBB; }
     .ctrl_btn_disabled:hover { background: #999; color: #BBB; cursor: default; }
   }
@@ -83,10 +91,8 @@
     overflow-x: auto;
     background: #FFF;
     color: #000;
-    flex-grow: 1;
-    margin: 0 4px 4px 4px;
     border: 1px solid #888;
-    height: 200px;
+    flex-grow: 1;
   }
 
   .bce_code_out_stack {
@@ -95,18 +101,32 @@
     overflow-x: auto;
     background: #FFF;
     color: #000;
-    margin: 0 4px 4px 4px;
-    width: 200px;
     border: 1px solid #888;
+    flex-grow: 1;
+  }
+
+  .bce_code_out_left {
+    flex-grow: 1;
+    margin: 0 4px 4px 4px;
     height: 200px;
+    display: flex;
+    flex-direction: column;
+  }
+
+  .bce_code_out_right {
+    height: 200px;
+    width: 200px;
+    margin: 0 4px 4px 4px;
+    display: flex;
+    flex-direction: column;
   }
 }
 @media (max-width: 767px) {
   .bce_code_out {
     flex-direction: column;
 
-    .bce_code_out_text { flex-grow: 0; height: 100px;}
-    .bce_code_out_stack { width: auto; height: 150px;}
+    .bce_code_out_left { flex-grow: 0; height: 100px;}
+    .bce_code_out_right { width: auto; height: 150px;}
   }
 }
 
diff --git a/www/data/javascript/blogpost_bef93runner.js b/www/data/javascript/blogpost_bef93runner.js
index e769ca7..dd1b634 100644
--- a/www/data/javascript/blogpost_bef93runner.js
+++ b/www/data/javascript/blogpost_bef93runner.js
@@ -1,5 +1,6 @@
 
 const BefState = Object.freeze ({ UNINIITIALIZED: {}, INITIAL: {}, RUNNING: {}, PAUSED: {} });
+const BefSpeed = Object.freeze ({ NORMAL: {str:'+'}, FAST: {str:'++'}, SUPERFAST: {str:'3+'}, MAX: {str:'4+'} });
 
 Array.prototype.peek = function() { return this[this.length - 1]; };
 Array.prototype.revjoin = function(sep) {
@@ -9,15 +10,17 @@ Array.prototype.revjoin = function(sep) {
 };
 
 function BefObject(domBase) {
-    this.btnStart  = domBase.getElementsByClassName('b93rnr_start')[0];
-    this.btnStop   = domBase.getElementsByClassName('b93rnr_pause')[0];
-    this.btnReset  = domBase.getElementsByClassName('b93rnr_reset')[0];
-    this.pnlCode   = domBase.getElementsByClassName('b93rnr_data')[0];
-    this.pnlBottom = domBase.getElementsByClassName('b93rnr_outpanel')[0];
-    this.pnlOutput = domBase.getElementsByClassName('b93rnr_output')[0];
-    this.pnlStack  = domBase.getElementsByClassName('b93rnr_stack')[0];
+    this.btnStart     = domBase.getElementsByClassName('b93rnr_start')[0];
+    this.btnStop      = domBase.getElementsByClassName('b93rnr_pause')[0];
+    this.btnReset     = domBase.getElementsByClassName('b93rnr_reset')[0];
+    this.btnSpeed     = domBase.getElementsByClassName('b93rnr_speed')[0];
+    this.pnlCode      = domBase.getElementsByClassName('b93rnr_data')[0];
+    this.pnlBottom    = domBase.getElementsByClassName('b93rnr_outpanel')[0];
+    this.pnlOutput    = domBase.getElementsByClassName('b93rnr_output')[0];
+    this.pnlStack     = domBase.getElementsByClassName('b93rnr_stack')[0];
+    this.lblStackSize = domBase.getElementsByClassName('b93rnr_stacksize')[0];
 
-    this.state = BefState.UNINIITIALIZED;
+    this.state    = BefState.UNINIITIALIZED;
     this.initial  = atob(this.pnlCode.getAttribute('data-befcode'));
     this.code     = [];
     this.width    = 0;
@@ -29,6 +32,7 @@ function BefObject(domBase) {
     this.stack    = [];
     this.timer    = null;
     this.psteps   = 0;
+    this.simspeed = BefSpeed.SUPERFAST;
 }
 
 BefObject.prototype.Init = function() {
@@ -81,8 +85,6 @@ BefObject.prototype.stop = function() {
 BefObject.prototype.reset = function() {
     if (this.state === BefState.RUNNING) this.stop();
 
-    //reset
-
     this.state = BefState.INITIAL;
     this.Init();
     this.state = BefState.INITIAL;
@@ -91,36 +93,69 @@ BefObject.prototype.reset = function() {
     this.updateDisplay();
 };
 
-BefObject.prototype.step = function() {
+BefObject.prototype.incSpeed = function() {
 
-    let t0 = performance.now();
-    let first = true;
-
-    let steps = 0;
-    while(steps===0 || (performance.now() - t0 < 33)) // 32ms == 30FPS
-    {
-        first = false;
-
-        let chr = this.code[this.position[1]][this.position[0]];
-        this.exec(chr);
-        this.move();
-
-        if (this.delta[0]===0 && this.delta[1]===0) {
-            console.log('Finished in ' + this.psteps + ' steps');
-            this.stop();
-            return;
-        }
-        steps++;
-    }
+         if (this.simspeed === BefSpeed.NORMAL)    this.simspeed = BefSpeed.FAST;
+    else if (this.simspeed === BefSpeed.FAST)      this.simspeed = BefSpeed.SUPERFAST;
+    else if (this.simspeed === BefSpeed.SUPERFAST) this.simspeed = BefSpeed.MAX;
+    else if (this.simspeed === BefSpeed.MAX)       this.simspeed = BefSpeed.NORMAL;
 
     this.updateUI();
+};
+
+BefObject.prototype.step = function() {
+
+    if (this.simspeed === BefSpeed.NORMAL) {
+
+        this.stepSingle();
+
+    } else if (this.simspeed === BefSpeed.FAST) {
+
+        let t0 = performance.now();
+        let stepc = 0;
+        while(this.state=== BefState.RUNNING && (stepc===0 || (performance.now() - t0 < 16)) && stepc < 128) // 16ms == 60FPS
+        {
+            this.stepSingle();
+            stepc++;
+        }
+
+    } else if (this.simspeed === BefSpeed.SUPERFAST) {
+
+        let t0 = performance.now();
+        let first = true;
+        while(this.state=== BefState.RUNNING && (first || (performance.now() - t0 < 16))) // 16ms == 60FPS
+        {
+            this.stepSingle();
+            first = false;
+        }
+
+    } else if (this.simspeed === BefSpeed.MAX) {
+
+        let t0 = performance.now();
+        let first = true;
+        while(this.state=== BefState.RUNNING && (first || (performance.now() - t0 < 33))) // 32ms == 30FPS
+        {
+            this.stepSingle();
+            first = false;
+        }
+    }
+
+    if (this.state !== BefState.RUNNING) this.updateUI();
     this.updateDisplay();
 };
 
+BefObject.prototype.stepSingle = function() {
+    let chr = this.code[this.position[1]][this.position[0]];
+    this.exec(chr);
+    this.move();
+
+    if (this.delta[0]===0 && this.delta[1]===0) {
+        console.log('Finished in ' + this.psteps + ' steps');
+        this.stop();
+    }
+};
+
 BefObject.prototype.exec = function(chr) {
-
-
-
     if (this.strmode)
     {
         this.psteps++;
@@ -197,7 +232,6 @@ BefObject.prototype.pop_i     = function()      { return this.stack.pop(); };
 BefObject.prototype.peek_i    = function()      { return this.stack.peek(); };
 BefObject.prototype.push_b    = function(v)     { this.stack.push(v?1:0); };
 BefObject.prototype.pop_b     = function()      { return this.stack.pop()!==0; };
-BefObject.prototype.peek_b    = function()      { return this.stack.peek()!==0; };
 BefObject.prototype.push_c    = function(v)     { this.stack.push(v.charCodeAt(0)); };
 BefObject.prototype.gridset_i = function(x,y,c) { if (x < 0 || y < 0 || x >= this.width || y >= this.height) return; this.code[y][x]=String.fromCharCode(c); };
 BefObject.prototype.gridget_i = function(x,y)   { if (x < 0 || y < 0 || x >= this.width || y >= this.height) return 0; return this.code[y][x].charCodeAt(0); };
@@ -209,6 +243,8 @@ BefObject.prototype.updateUI = function() {
     classListSet(this.btnReset, 'ctrl_btn_disabled', this.state === BefState.UNINIITIALIZED || this.state === BefState.INITIAL);
 
     classListSet(this.pnlBottom, 'b93rnr_outpanel_hidden', this.state === BefState.UNINIITIALIZED || this.state === BefState.INITIAL);
+
+    this.btnSpeed.innerHTML = this.simspeed.str;
 };
 
 BefObject.prototype.updateDisplay = function() {
@@ -233,6 +269,8 @@ BefObject.prototype.updateDisplay = function() {
     this.pnlOutput.innerHTML = htmlescape(this.output);
 
     this.pnlStack.innerHTML = this.stack.revjoin("<br/>");
+
+    this.lblStackSize.innerHTML = "(" + this.stack.length + ")";
 };
 
 BefObject.prototype.parseBef = function(str) {
@@ -285,5 +323,6 @@ window.onload = function ()
         befungeObject.btnStart.onclick = function () { if (befungeObject.btnStart.classList.contains('ctrl_btn_disabled')) return; befungeObject.start(); };
         befungeObject.btnStop.onclick  = function () { if (befungeObject.btnStop.classList.contains('ctrl_btn_disabled'))  return; befungeObject.stop(); };
         befungeObject.btnReset.onclick = function () { if (befungeObject.btnReset.classList.contains('ctrl_btn_disabled')) return; befungeObject.reset(); };
+        befungeObject.btnSpeed.onclick = function () { if (befungeObject.btnSpeed.classList.contains('ctrl_btn_disabled')) return; befungeObject.incSpeed(); };
     }
 };
\ No newline at end of file
diff --git a/www/fragments/befunge93_runner.php b/www/fragments/befunge93_runner.php
index 33dc393..3f37bcf 100644
--- a/www/fragments/befunge93_runner.php
+++ b/www/fragments/befunge93_runner.php
@@ -23,7 +23,10 @@ if ($PARAM_INTERACTIVE) {
 	$result .= '	<div class="bce_code_data b93rnr_data" data-befcode="' . base64_encode($PARAM_CODE) . '">' . fmtBef($PARAM_CODE) . '</div>' . "\n";
 	$result .= '	<div class="bce_code_ctrl">' . "\n";
 	$result .= '		<div class="ctrl_btn_left">' . "\n";
-	$result .= '			<div class="ctrl_btn b93rnr_start">Start</div>' . "\n";
+	$result .= '			<div class="ctrl_btn_group">' . "\n";
+	$result .= '				<div class="ctrl_btn ctrl_btn_ll b93rnr_start">Start</div>' . "\n";
+	$result .= '				<div class="ctrl_btn ctrl_btn_rr b93rnr_speed">3+</div>' . "\n";
+	$result .= '			</div>' . "\n";
 	$result .= '			<div class="ctrl_btn b93rnr_pause ctrl_btn_disabled">Pause</div>' . "\n";
 	$result .= '			<div class="ctrl_btn b93rnr_reset ctrl_btn_disabled">Reset</div>' . "\n";
 	$result .= '		</div>' . "\n";
@@ -34,8 +37,14 @@ if ($PARAM_INTERACTIVE) {
 	}
 	$result .= '	</div>' . "\n";
 	$result .= '	<div class="bce_code_out b93rnr_outpanel b93rnr_outpanel_hidden">' . "\n";
-	$result .= '		<div class="bce_code_out_text b93rnr_output"></div>' . "\n";
-	$result .= '		<div class="bce_code_out_stack b93rnr_stack"></div>' . "\n";
+	$result .= '		<div class="bce_code_out_left">' . "\n";
+	$result .= '			<b>Output:</b>' . "\n";
+	$result .= '			<div class="bce_code_out_text b93rnr_output"></div>' . "\n";
+	$result .= '		</div>' . "\n";
+	$result .= '		<div class="bce_code_out_right">' . "\n";
+	$result .= '			<span><b>Stack:</b>&nbsp;&nbsp;&nbsp;<i class="b93rnr_stacksize">(0)</i></span>' . "\n";
+	$result .= '			<div class="bce_code_out_stack b93rnr_stack"></div>' . "\n";
+	$result .= '		</div>' . "\n";
 	$result .= '	</div>' . "\n";
 	$result .= '</div>' . "\n";
 
diff --git a/www/fragments/blogview_euler_single.php b/www/fragments/blogview_euler_single.php
index 6ecda88..9de4ba7 100644
--- a/www/fragments/blogview_euler_single.php
+++ b/www/fragments/blogview_euler_single.php
@@ -7,7 +7,7 @@ require_once (__DIR__ . '/../internals/ParsedownCustom.php');
 $subview = $OPTIONS['subview'];
 
 $euler   = Euler::listAll();
-$problem = Euler::getEulerProblem(intval(explode('-', $subview)[1]));
+$problem = Euler::getEulerProblemFromStrIdent($subview);
 
 if ($post === NULL) httpError(404, 'problem not found');
 
diff --git a/www/internals/euler.php b/www/internals/euler.php
index 8b19ae7..1d55bd8 100644
--- a/www/internals/euler.php
+++ b/www/internals/euler.php
@@ -35,6 +35,17 @@ class Euler
 		return array_map('self::readSingle', $files);
 	}
 
+	public static function getEulerProblemFromStrIdent($ident)
+	{
+		$e = explode('-', $ident, 2);
+		if (count($e)!==2) return null;
+
+		$i = intval($e[1], 10);
+		if ($i == 0) return null;
+
+		return self::getEulerProblem($i);
+	}
+
 	public static function getEulerProblem($num)
 	{
 		foreach (self::listAll() as $ep) {
diff --git a/www/pages/blog_view.php b/www/pages/blog_view.php
index 448013f..bea82c9 100644
--- a/www/pages/blog_view.php
+++ b/www/pages/blog_view.php
@@ -19,7 +19,19 @@ if ($post === NULL) httpError(404, 'blogpost not found');
 	<meta name="google-site-verification" content="pZOhmjeJcQbRMNa8xRLam4dwJ2oYwMwISY1lRKreSSs"/>
 	<link rel="icon" type="image/png" href="/data/images/favicon.png"/>
     <link rel="stylesheet" href="/data/css/styles.css"/>
-    <link rel="canonical" href="<?php echo (($subview !== '') ? ($post['canonical']) : ($post['canonical'] . '/' . $subview)); ?>"/>
+	<?php
+    if ($post['type'] === 'euler' && $subview !== '')
+	{
+		require_once(__DIR__ . '/../internals/euler.php');
+		$problem = Euler::getEulerProblemFromStrIdent($subview);
+		if ($problem !== NULL) echo '<link rel="canonical" href="' . $problem['canonical'] . '"/>';
+	}
+	else
+    {
+        echo '<link rel="canonical" href="' . $post['canonical'] . '"/>';
+    }
+    ?>
+
 </head>
 <body>
 <div id="mastercontainer">