- Added solutions by Eric Cheung.

- Added solutions by Reinier Maliepaard.
- Added solutions by Niels van Dijke.
- Added solutions by Feng Chang.
- Added solutions by E. Choroba.
- Added solutions by Mark Anderson.
- Added solutions by Luca Ferrari.
- Added solutions by David Ferrone.
- Added solutions by W. Luis Mochan.
- Added solutions by Peter Meszaros.
- Added solutions by Steven Wilson.
- Added solutions by Roger Bell_West.
- Added solutions by Bob Lied.
- Added solutions by Peter Campbell Smith.
- Added solutions by Lubos Kolouch.

26 files changed, 4269 insertions, 3836 deletions

diff --git a/challenge-266/eric-cheung/python/ch-1.py b/challenge-266/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..160e4be8c9
--- /dev/null
+++ b/challenge-266/eric-cheung/python/ch-1.py
@@ -0,0 +1,25 @@
+

+## Example 1

+## strLine_01 = "Mango is sweet"

+## strLine_02 = "Mango is sour"

+

+## Example 2

+## strLine_01 = "Mango Mango"

+## strLine_02 = "Orange"

+

+## Example 3

+strLine_01 = "Mango is Mango"

+strLine_02 = "Orange is Orange"

+

+arrLineSplit_01 = strLine_01.split()

+arrUniqLine_01 = [strLoop for strLoop in set(arrLineSplit_01) if arrLineSplit_01.count(strLoop) == 1]

+

+arrLineSplit_02 = strLine_02.split()

+arrUniqLine_02 = [strLoop for strLoop in set(arrLineSplit_02) if arrLineSplit_02.count(strLoop) == 1]

+

+arrUnCommonWord = [strLoop for strLoop in arrUniqLine_01 if not strLoop in arrUniqLine_02]

+arrUnCommonWord = arrUnCommonWord + [strLoop for strLoop in arrUniqLine_02 if not strLoop in arrUniqLine_01]

+

+## print (arrUniqLine_01)

+## print (arrUniqLine_02)

+print (arrUnCommonWord)

diff --git a/challenge-266/eric-cheung/python/ch-2.py b/challenge-266/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..0c74ebfbf3
--- /dev/null
+++ b/challenge-266/eric-cheung/python/ch-2.py
@@ -0,0 +1,34 @@
+

+def IsXMatrix (arrInputMatrix):

+

+    nLen = len(arrInputMatrix)

+

+    ## Check

+    for nRowIndx in range(nLen):

+

+        nColIndx_01 = nRowIndx

+        nColIndx_02 = nLen - nRowIndx - 1

+

+        ## 1st

+        if arrInputMatrix[nRowIndx][nColIndx_01] == 0:

+            return False

+

+        ## 2nd

+        if arrInputMatrix[nRowIndx][nColIndx_02] == 0:

+            return False

+

+        ## 3rd

+        for nColIndx in range(nLen):

+            if nColIndx in [nColIndx_01, nColIndx_02]:

+                continue

+

+            if arrInputMatrix[nRowIndx][nColIndx] != 0:

+                return False

+

+    return True

+

+## arrMatrix = [[1, 0, 0, 2], [0, 3, 4, 0], [0, 5, 6, 0], [7, 0, 0, 1]]  ## Example 1

+## arrMatrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]  ## Example 2

+arrMatrix = [[1, 0, 2], [0, 3, 0], [4, 0, 5]]  ## Example 3

+

+print (IsXMatrix (arrMatrix))

diff --git a/challenge-266/perlboy1967/perl/ch1.pl b/challenge-266/perlboy1967/perl/ch-1.pl
index f104fec4a6..f104fec4a6 100755
--- a/challenge-266/perlboy1967/perl/ch1.pl
+++ b/challenge-266/perlboy1967/perl/ch-1.pl
diff --git a/challenge-266/perlboy1967/perl/ch2.pl b/challenge-266/perlboy1967/perl/ch-2.pl
index 0526dcd74b..0526dcd74b 100755
--- a/challenge-266/perlboy1967/perl/ch2.pl
+++ b/challenge-266/perlboy1967/perl/ch-2.pl
diff --git a/challenge-266/reinier-maliepaard/blog.txt b/challenge-266/reinier-maliepaard/blog.txt
new file mode 100644
index 0000000000..8cfdaba867
--- /dev/null
+++ b/challenge-266/reinier-maliepaard/blog.txt
@@ -0,0 +1 @@
+https://reiniermaliepaard.nl/perl/pwc/index.php?id=pwc266
diff --git a/challenge-266/reinier-maliepaard/perl/ch-1.pl b/challenge-266/reinier-maliepaard/perl/ch-1.pl
new file mode 100644
index 0000000000..fb4002d6f1
--- /dev/null
+++ b/challenge-266/reinier-maliepaard/perl/ch-1.pl
@@ -0,0 +1,37 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+#-------------------------------------------
+
+sub uncommon_word {
+
+    my($s1, $s2) = @_;
+
+    my %freq;
+    my @result;
+
+    $freq{$_}++ foreach(split(/ /, $s1));
+    $freq{$_}++ foreach(split(/ /, $s2));
+
+    foreach my $k (keys(%freq)) {
+      push(@result, "'$k'") if($freq{$k} == 1);
+    }
+    print("(", join(", ", @result),")", "\n");
+}
+
+my ($s1, $s2);
+
+# Example 1
+$s1 = "Mango is sweet";
+$s2 = "Mango is sour";
+uncommon_word($s1, $s2); # Output: ('sweet', 'sour')
+
+# Example 2
+$s1 = "Mango Mango";
+$s2 = "Orange";
+uncommon_word($s1, $s2); # Output: ('Orange')
+
+# Example 3
+$s1 = "Mango is Mango";
+$s2 = "Orange is Orange";
+uncommon_word($s1, $s2); # Output: ()
diff --git a/challenge-266/reinier-maliepaard/perl/ch-2.pl b/challenge-266/reinier-maliepaard/perl/ch-2.pl
new file mode 100644
index 0000000000..40bd456903
--- /dev/null
+++ b/challenge-266/reinier-maliepaard/perl/ch-2.pl
@@ -0,0 +1,54 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+#-------------------------------------------
+
+sub is_x_matrix {
+    my $matrix = shift;
+
+    my $size = @$matrix;
+
+    # check main diagonal and antidiagonal
+    for my $i (0 .. $size - 1) {
+        # check main diagonal
+        return 0 if ($matrix->[$i][$i] == 0);
+        # check antidiagonal
+        return 0 if ($matrix->[$i][$size - 1 - $i] == 0);
+    }
+
+    # check all other elements
+    for my $i (0 .. $size - 1) {
+        for my $j (0 .. $size - 1) {
+            return 0 if ($i != $j && $i + $j != ($size - 1) && $matrix->[$i][$j] != 0);
+        }
+    }
+
+    # it's an X Matrix
+    return 1;
+}
+
+# TESTS
+
+my $matrix;
+
+# Example 1
+$matrix = [ [1, 0, 0, 2],
+            [0, 3, 4, 0],
+            [0, 5, 6, 0],
+            [7, 0, 0, 1],
+          ];
+print(is_x_matrix($matrix), "\n"); # Output: 1
+
+# Example 2
+$matrix = [ [1, 2, 3],
+            [4, 5, 6],
+            [7, 8, 9],
+          ];
+print(is_x_matrix($matrix), "\n"); # Output: 0
+
+# Example 3
+$matrix = [ [1, 0, 2],
+            [0, 3, 0],
+            [4, 0, 5],
+          ];
+print(is_x_matrix($matrix), "\n"); # Output: 1
diff --git a/stats/pwc-challenge-017.json b/stats/pwc-challenge-017.json
index 1151253dd3..c55bcc5a45 100644
--- a/stats/pwc-challenge-017.json
+++ b/stats/pwc-challenge-017.json
@@ -1,182 +1,12 @@
 {
-   "subtitle" : {
-      "text" : "[Champions: 31] Last updated at 2023-03-26 10:37:55 GMT"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 017",
-         "data" : [
-            {
-               "drilldown" : "Adam Russell",
-               "name" : "Adam Russell",
-               "y" : 4
-            },
-            {
-               "name" : "Andrezgz",
-               "y" : 2,
-               "drilldown" : "Andrezgz"
-            },
-            {
-               "y" : 3,
-               "name" : "Arne Sommer",
-               "drilldown" : "Arne Sommer"
-            },
-            {
-               "y" : 4,
-               "name" : "Athanasius",
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Daniel Mantovani",
-               "y" : 2,
-               "name" : "Daniel Mantovani"
-            },
-            {
-               "drilldown" : "Dave Jacoby",
-               "name" : "Dave Jacoby",
-               "y" : 3
-            },
-            {
-               "drilldown" : "Duane Powell",
-               "y" : 2,
-               "name" : "Duane Powell"
-            },
-            {
-               "name" : "Duncan C. White",
-               "y" : 2,
-               "drilldown" : "Duncan C. White"
-            },
-            {
-               "name" : "E. Choroba",
-               "y" : 3,
-               "drilldown" : "E. Choroba"
-            },
-            {
-               "drilldown" : "Feng Chang",
-               "name" : "Feng Chang",
-               "y" : 4
-            },
-            {
-               "drilldown" : "Francis Whittle",
-               "y" : 3,
-               "name" : "Francis Whittle"
-            },
-            {
-               "drilldown" : "Jaldhar H. Vyas",
-               "name" : "Jaldhar H. Vyas",
-               "y" : 6
-            },
-            {
-               "y" : 6,
-               "name" : "Joelle Maslak",
-               "drilldown" : "Joelle Maslak"
-            },
-            {
-               "y" : 2,
-               "name" : "Jorg Sommrey",
-               "drilldown" : "Jorg Sommrey"
-            },
-            {
-               "drilldown" : "Kevin Colyer",
-               "name" : "Kevin Colyer",
-               "y" : 2
-            },
-            {
-               "y" : 3,
-               "name" : "Kian-Meng Ang",
-               "drilldown" : "Kian-Meng Ang"
-            },
-            {
-               "drilldown" : "Lakpa Tashi Bhutia",
-               "name" : "Lakpa Tashi Bhutia",
-               "y" : 1
-            },
-            {
-               "drilldown" : "Laurent Rosenfeld",
-               "y" : 6,
-               "name" : "Laurent Rosenfeld"
-            },
-            {
-               "name" : "Lubos Kolouch",
-               "y" : 2,
-               "drilldown" : "Lubos Kolouch"
-            },
-            {
-               "drilldown" : "Michael Hamlin",
-               "name" : "Michael Hamlin",
-               "y" : 1
-            },
-            {
-               "drilldown" : "Noud Aldenhoven",
-               "name" : "Noud Aldenhoven",
-               "y" : 2
-            },
-            {
-               "y" : 1,
-               "name" : "Ozzy",
-               "drilldown" : "Ozzy"
-            },
-            {
-               "name" : "Paulo Custodio",
-               "y" : 2,
-               "drilldown" : "Paulo Custodio"
-            },
-            {
-               "drilldown" : "Randy Lauen",
-               "name" : "Randy Lauen",
-               "y" : 1
-            },
-            {
-               "name" : "Roger Bell_West",
-               "y" : 2,
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "drilldown" : "Ruben Westerberg",
-               "name" : "Ruben Westerberg",
-               "y" : 4
-            },
-            {
-               "name" : "Simon Proctor",
-               "y" : 1,
-               "drilldown" : "Simon Proctor"
-            },
-            {
-               "drilldown" : "Steven Wilson",
-               "y" : 2,
-               "name" : "Steven Wilson"
-            },
-            {
-               "y" : 2,
-               "name" : "Stuart Little",
-               "drilldown" : "Stuart Little"
-            },
-            {
-               "drilldown" : "Veesh Goldman",
-               "name" : "Veesh Goldman",
-               "y" : 4
-            },
-            {
-               "drilldown" : "Yozen Hernandez",
-               "name" : "Yozen Hernandez",
-               "y" : 4
-            }
-         ]
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
       }
-   ],
-   "tooltip" : {
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1,
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>"
    },
    "drilldown" : {
       "series" : [
@@ -196,13 +26,13 @@
          },
          {
             "name" : "Andrezgz",
-            "id" : "Andrezgz",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Andrezgz"
          },
          {
             "id" : "Arne Sommer",
@@ -239,10 +69,11 @@
                   2
                ]
             ],
-            "id" : "Daniel Mantovani",
-            "name" : "Daniel Mantovani"
+            "name" : "Daniel Mantovani",
+            "id" : "Daniel Mantovani"
          },
          {
+            "name" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -253,30 +84,41 @@
                   1
                ]
             ],
-            "id" : "Dave Jacoby",
-            "name" : "Dave Jacoby"
+            "id" : "Dave Jacoby"
          },
          {
             "data" : [
                [
                   "Perl",
-                  2
+                  1
                ]
             ],
+            "name" : "David Ferrone",
+            "id" : "David Ferrone"
+         },
+         {
             "name" : "Duane Powell",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
             "id" : "Duane Powell"
          },
          {
-            "id" : "Duncan C. White",
-            "name" : "Duncan C. White",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Duncan C. White",
+            "id" : "Duncan C. White"
          },
          {
+            "id" : "E. Choroba",
+            "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
@@ -286,11 +128,10 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "E. Choroba",
-            "name" : "E. Choroba"
+            ]
          },
          {
+            "id" : "Feng Chang",
             "data" : [
                [
                   "Perl",
@@ -301,12 +142,9 @@
                   2
                ]
             ],
-            "id" : "Feng Chang",
             "name" : "Feng Chang"
          },
          {
-            "name" : "Francis Whittle",
-            "id" : "Francis Whittle",
             "data" : [
                [
                   "Raku",
@@ -316,11 +154,12 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Francis Whittle",
+            "id" : "Francis Whittle"
          },
          {
             "name" : "Jaldhar H. Vyas",
-            "id" : "Jaldhar H. Vyas",
             "data" : [
                [
                   "Perl",
@@ -334,11 +173,12 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Jaldhar H. Vyas"
          },
          {
-            "name" : "Joelle Maslak",
             "id" : "Joelle Maslak",
+            "name" : "Joelle Maslak",
             "data" : [
                [
                   "Perl",
@@ -357,20 +197,21 @@
                   2
                ]
             ],
-            "id" : "Jorg Sommrey",
-            "name" : "Jorg Sommrey"
+            "name" : "Jorg Sommrey",
+            "id" : "Jorg Sommrey"
          },
          {
+            "name" : "Kevin Colyer",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "id" : "Kevin Colyer",
-            "name" : "Kevin Colyer"
+            "id" : "Kevin Colyer"
          },
          {
+            "id" : "Kian-Meng Ang",
             "data" : [
                [
                   "Perl",
@@ -381,8 +222,7 @@
                   1
                ]
             ],
-            "name" : "Kian-Meng Ang",
-            "id" : "Kian-Meng Ang"
+            "name" : "Kian-Meng Ang"
          },
          {
             "data" : [
@@ -391,8 +231,8 @@
                   1
                ]
             ],
-            "id" : "Lakpa Tashi Bhutia",
-            "name" : "Lakpa Tashi Bhutia"
+            "name" : "Lakpa Tashi Bhutia",
+            "id" : "Lakpa Tashi Bhutia"
          },
          {
             "data" : [
@@ -413,28 +253,28 @@
             "id" : "Laurent Rosenfeld"
          },
          {
+            "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Lubos Kolouch",
-            "id" : "Lubos Kolouch"
+            ]
          },
          {
+            "id" : "Michael Hamlin",
+            "name" : "Michael Hamlin",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ],
-            "name" : "Michael Hamlin",
-            "id" : "Michael Hamlin"
+            ]
          },
          {
-            "name" : "Noud Aldenhoven",
             "id" : "Noud Aldenhoven",
+            "name" : "Noud Aldenhoven",
             "data" : [
                [
                   "Raku",
@@ -443,28 +283,28 @@
             ]
          },
          {
+            "name" : "Ozzy",
             "data" : [
                [
                   "Raku",
                   1
                ]
             ],
-            "id" : "Ozzy",
-            "name" : "Ozzy"
+            "id" : "Ozzy"
          },
          {
+            "id" : "Paulo Custodio",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Paulo Custodio",
-            "id" : "Paulo Custodio"
+            "name" : "Paulo Custodio"
          },
          {
-            "name" : "Randy Lauen",
             "id" : "Randy Lauen",
+            "name" : "Randy Lauen",
             "data" : [
                [
                   "Raku",
@@ -473,18 +313,18 @@
             ]
          },
          {
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Roger Bell_West",
             "name" : "Roger Bell_West"
          },
          {
-            "name" : "Ruben Westerberg",
             "id" : "Ruben Westerberg",
+            "name" : "Ruben Westerberg",
             "data" : [
                [
                   "Perl",
@@ -498,36 +338,35 @@
          },
          {
             "name" : "Simon Proctor",
-            "id" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "id" : "Simon Proctor"
          },
          {
+            "name" : "Steven Wilson",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Steven Wilson",
-            "name" : "Steven Wilson"
+            "id" : "Steven Wilson"
          },
          {
-            "name" : "Stuart Little",
             "id" : "Stuart Little",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Stuart Little"
          },
          {
-            "name" : "Veesh Goldman",
             "id" : "Veesh Goldman",
             "data" : [
                [
@@ -542,9 +381,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Veesh Goldman"
          },
          {
+            "name" : "Yozen Hernandez",
             "data" : [
                [
                   "Perl",
@@ -555,26 +396,200 @@
                   2
                ]
             ],
-            "name" : "Yozen Hernandez",
             "id" : "Yozen Hernandez"
          }
       ]
    },
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "y" : 4,
+               "drilldown" : "Adam Russell",
+               "name" : "Adam Russell"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Andrezgz",
+               "name" : "Andrezgz"
+            },
+            {
+               "name" : "Arne Sommer",
+               "drilldown" : "Arne Sommer",
+               "y" : 3
+            },
+            {
+               "name" : "Athanasius",
+               "drilldown" : "Athanasius",
+               "y" : 4
+            },
+            {
+               "name" : "Daniel Mantovani",
+               "drilldown" : "Daniel Mantovani",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Dave Jacoby",
+               "name" : "Dave Jacoby"
+            },
+            {
+               "name" : "David Ferrone",
+               "y" : 1,
+               "drilldown" : "David Ferrone"
+            },
+            {
+               "drilldown" : "Duane Powell",
+               "y" : 2,
+               "name" : "Duane Powell"
+            },
+            {
+               "drilldown" : "Duncan C. White",
+               "y" : 2,
+               "name" : "Duncan C. White"
+            },
+            {
+               "drilldown" : "E. Choroba",
+               "y" : 3,
+               "name" : "E. Choroba"
+            },
+            {
+               "name" : "Feng Chang",
+               "y" : 4,
+               "drilldown" : "Feng Chang"
+            },
+            {
+               "drilldown" : "Francis Whittle",
+               "y" : 3,
+               "name" : "Francis Whittle"
+            },
+            {
+               "y" : 6,
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas"
+            },
+            {
+               "y" : 6,
+               "drilldown" : "Joelle Maslak",
+               "name" : "Joelle Maslak"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Jorg Sommrey",
+               "name" : "Jorg Sommrey"
+            },
+            {
+               "name" : "Kevin Colyer",
+               "drilldown" : "Kevin Colyer",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Kian-Meng Ang",
+               "name" : "Kian-Meng Ang"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Lakpa Tashi Bhutia",
+               "name" : "Lakpa Tashi Bhutia"
+            },
+            {
+               "name" : "Laurent Rosenfeld",
+               "drilldown" : "Laurent Rosenfeld",
+               "y" : 6
+            },
+            {
+               "name" : "Lubos Kolouch",
+               "y" : 2,
+               "drilldown" : "Lubos Kolouch"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Michael Hamlin",
+               "name" : "Michael Hamlin"
+            },
+            {
+               "name" : "Noud Aldenhoven",
+               "drilldown" : "Noud Aldenhoven",
+               "y" : 2
+            },
+            {
+               "name" : "Ozzy",
+               "drilldown" : "Ozzy",
+               "y" : 1
+            },
+            {
+               "name" : "Paulo Custodio",
+               "y" : 2,
+               "drilldown" : "Paulo Custodio"
+            },
+            {
+               "name" : "Randy Lauen",
+               "y" : 1,
+               "drilldown" : "Randy Lauen"
+            },
+            {
+               "name" : "Roger Bell_West",
+               "y" : 2,
+               "drilldown" : "Roger Bell_West"
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Ruben Westerberg",
+               "name" : "Ruben Westerberg"
+            },
+            {
+               "name" : "Simon Proctor",
+               "y" : 1,
+               "drilldown" : "Simon Proctor"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Steven Wilson",
+               "name" : "Steven Wilson"
+            },
+            {
+               "name" : "Stuart Little",
+               "drilldown" : "Stuart Little",
+               "y" : 2
+            },
+            {
+               "name" : "Veesh Goldman",
+               "drilldown" : "Veesh Goldman",
+               "y" : 4
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Yozen Hernandez",
+               "name" : "Yozen Hernandez"
+            }
+         ],
+         "name" : "The Weekly Challenge - 017"
+      }
+   ],
    "legend" : {
       "enabled" : 0
    },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
-      }
+   "chart" : {
+      "type" : "column"
    },
    "title" : {
       "text" : "The Weekly Challenge - 017"
    },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "tooltip" : {
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 32] Last updated at 2024-04-23 15:59:07 GMT"
+   },
    "xAxis" : {
       "type" : "category"
    }
diff --git a/stats/pwc-challenge-018.json b/stats/pwc-challenge-018.json
index fc2a57d9af..c6b1a090b8 100644
--- a/stats/pwc-challenge-018.json
+++ b/stats/pwc-challenge-018.json
@@ -1,188 +1,18 @@
 {
-   "legend" : {
-      "enabled" : 0
-   },
-   "tooltip" : {
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b>&l