- Added solutions by Jaldhar H. Vyas.

- Added solutions by Thomas Kohler.

27 files changed, 937 insertions, 902 deletions

diff --git a/stats/pwc-challenge-009.json b/stats/pwc-challenge-009.json
index a6309588b2..aef9f7f2a0 100644
--- a/stats/pwc-challenge-009.json
+++ b/stats/pwc-challenge-009.json
@@ -1,191 +1,7 @@
 {
-   "subtitle" : {
-      "text" : "[Champions: 30] Last updated at 2024-07-29 17:29:09 GMT"
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "followPointer" : 1,
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
-   },
    "chart" : {
       "type" : "column"
    },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
-      }
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 009"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "series" : [
-      {
-         "data" : [
-            {
-               "y" : 3,
-               "drilldown" : "Adam Russell",
-               "name" : "Adam Russell"
-            },
-            {
-               "name" : "Andrezgz",
-               "drilldown" : "Andrezgz",
-               "y" : 2
-            },
-            {
-               "name" : "Arne Sommer",
-               "drilldown" : "Arne Sommer",
-               "y" : 3
-            },
-            {
-               "name" : "Athanasius",
-               "drilldown" : "Athanasius",
-               "y" : 2
-            },
-            {
-               "name" : "Daniel Mantovani",
-               "drilldown" : "Daniel Mantovani",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Daniel Mita",
-               "y" : 2,
-               "name" : "Daniel Mita"
-            },
-            {
-               "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby",
-               "y" : 4
-            },
-            {
-               "y" : 2,
-               "drilldown" : "David Ferrone",
-               "name" : "David Ferrone"
-            },
-            {
-               "name" : "E. Choroba",
-               "drilldown" : "E. Choroba",
-               "y" : 3
-            },
-            {
-               "name" : "Feng Chang",
-               "y" : 2,
-               "drilldown" : "Feng Chang"
-            },
-            {
-               "name" : "Francis Whittle",
-               "y" : 3,
-               "drilldown" : "Francis Whittle"
-            },
-            {
-               "drilldown" : "Guillermo Ramos",
-               "y" : 2,
-               "name" : "Guillermo Ramos"
-            },
-            {
-               "drilldown" : "Gustavo Chaves",
-               "y" : 2,
-               "name" : "Gustavo Chaves"
-            },
-            {
-               "name" : "Jaldhar H. Vyas",
-               "y" : 4,
-               "drilldown" : "Jaldhar H. Vyas"
-            },
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-               "y" : 5,
-               "drilldown" : "Joelle Maslak",
-               "name" : "Joelle Maslak"
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Jorg Sommrey",
-               "name" : "Jorg Sommrey"
-            },
-            {
-               "name" : "Kevin Colyer",
-               "y" : 2,
-               "drilldown" : "Kevin Colyer"
-            },
-            {
-               "name" : "Kian-Meng Ang",
-               "y" : 4,
-               "drilldown" : "Kian-Meng Ang"
-            },
-            {
-               "drilldown" : "Lakpa Tashi Bhutia",
-               "y" : 2,
-               "name" : "Lakpa Tashi Bhutia"
-            },
-            {
-               "y" : 7,
-               "drilldown" : "Laurent Rosenfeld",
-               "name" : "Laurent Rosenfeld"
-            },
-            {
-               "name" : "Lubos Kolouch",
-               "y" : 2,
-               "drilldown" : "Lubos Kolouch"
-            },
-            {
-               "name" : "Maxim Nechaev",
-               "drilldown" : "Maxim Nechaev",
-               "y" : 2
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Paulo Custodio",
-               "name" : "Paulo Custodio"
-            },
-            {
-               "y" : 4,
-               "drilldown" : "Ruben Westerberg",
-               "name" : "Ruben Westerberg"
-            },
-            {
-               "name" : "Simon Proctor",
-               "y" : 1,
-               "drilldown" : "Simon Proctor"
-            },
-            {
-               "drilldown" : "Steven Wilson",
-               "y" : 2,
-               "name" : "Steven Wilson"
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Stuart Little",
-               "name" : "Stuart Little"
-            },
-            {
-               "drilldown" : "Veesh Goldman",
-               "y" : 2,
-               "name" : "Veesh Goldman"
-            },
-            {
-               "drilldown" : "Yet Ebreo",
-               "y" : 1,
-               "name" : "Yet Ebreo"
-            },
-            {
-               "name" : "Yozen Hernandez",
-               "y" : 3,
-               "drilldown" : "Yozen Hernandez"
-            }
-         ],
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 009"
-      }
-   ],
-   "legend" : {
-      "enabled" : 0
-   },
    "drilldown" : {
       "series" : [
          {
@@ -199,8 +15,8 @@
                   1
                ]
             ],
-            "name" : "Adam Russell",
-            "id" : "Adam Russell"
+            "id" : "Adam Russell",
+            "name" : "Adam Russell"
          },
          {
             "data" : [
@@ -209,12 +25,10 @@
                   2
                ]
             ],
-            "name" : "Andrezgz",
-            "id" : "Andrezgz"
+            "id" : "Andrezgz",
+            "name" : "Andrezgz"
          },
          {
-            "id" : "Arne Sommer",
-            "name" : "Arne Sommer",
             "data" : [
                [
                   "Raku",
@@ -224,17 +38,19 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Arne Sommer",
+            "name" : "Arne Sommer"
          },
          {
-            "id" : "Athanasius",
-            "name" : "Athanasius",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Athanasius",
+            "name" : "Athanasius"
          },
          {
             "data" : [
@@ -243,22 +59,20 @@
                   2
                ]
             ],
-            "name" : "Daniel Mantovani",
-            "id" : "Daniel Mantovani"
+            "id" : "Daniel Mantovani",
+            "name" : "Daniel Mantovani"
          },
          {
-            "id" : "Daniel Mita",
-            "name" : "Daniel Mita",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Daniel Mita",
+            "name" : "Daniel Mita"
          },
          {
-            "id" : "Dave Jacoby",
-            "name" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -268,21 +82,21 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "id" : "Dave Jacoby",
+            "name" : "Dave Jacoby"
          },
          {
-            "id" : "David Ferrone",
-            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "David Ferrone",
+            "name" : "David Ferrone"
          },
          {
-            "name" : "E. Choroba",
-            "id" : "E. Choroba",
             "data" : [
                [
                   "Perl",
@@ -292,11 +106,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "E. Choroba",
+            "name" : "E. Choroba"
          },
          {
-            "name" : "Feng Chang",
-            "id" : "Feng Chang",
             "data" : [
                [
                   "Perl",
@@ -306,11 +120,11 @@
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "id" : "Feng Chang",
+            "name" : "Feng Chang"
          },
          {
-            "name" : "Francis Whittle",
-            "id" : "Francis Whittle",
             "data" : [
                [
                   "Raku",
@@ -320,7 +134,9 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Francis Whittle",
+            "name" : "Francis Whittle"
          },
          {
             "data" : [
@@ -329,22 +145,20 @@
                   2
                ]
             ],
-            "name" : "Guillermo Ramos",
-            "id" : "Guillermo Ramos"
+            "id" : "Guillermo Ramos",
+            "name" : "Guillermo Ramos"
          },
          {
-            "id" : "Gustavo Chaves",
-            "name" : "Gustavo Chaves",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Gustavo Chaves",
+            "name" : "Gustavo Chaves"
          },
          {
-            "id" : "Jaldhar H. Vyas",
-            "name" : "Jaldhar H. Vyas",
             "data" : [
                [
                   "Perl",
@@ -353,8 +167,14 @@
                [
                   "Raku",
                   2
+               ],
+               [
+                  "Blog",
+                  1
                ]
-            ]
+            ],
+            "id" : "Jaldhar H. Vyas",
+            "name" : "Jaldhar H. Vyas"
          },
          {
             "data" : [
@@ -381,8 +201,8 @@
                   2
                ]
             ],
-            "name" : "Jorg Sommrey",
-            "id" : "Jorg Sommrey"
+            "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey"
          },
          {
             "data" : [
@@ -409,18 +229,16 @@
             "name" : "Kian-Meng Ang"
          },
          {
-            "name" : "Lakpa Tashi Bhutia",
-            "id" : "Lakpa Tashi Bhutia",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Lakpa Tashi Bhutia",
+            "name" : "Lakpa Tashi Bhutia"
          },
          {
-            "name" : "Laurent Rosenfeld",
-            "id" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -434,27 +252,29 @@
                   "Blog",
                   3
                ]
-            ]
+            ],
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld"
          },
          {
-            "name" : "Lubos Kolouch",
-            "id" : "Lubos Kolouch",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch"
          },
          {
-            "id" : "Maxim Nechaev",
-            "name" : "Maxim Nechaev",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Maxim Nechaev",
+            "name" : "Maxim Nechaev"
          },
          {
             "data" : [
@@ -463,12 +283,10 @@
                   2
                ]
             ],
-            "name" : "Paulo Custodio",
-            "id" : "Paulo Custodio"
+            "id" : "Paulo Custodio",
+            "name" : "Paulo Custodio"
          },
          {
-            "id" : "Ruben Westerberg",
-            "name" : "Ruben Westerberg",
             "data" : [
                [
                   "Perl",
@@ -478,7 +296,9 @@
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Ruben Westerberg",
+            "name" : "Ruben Westerberg"
          },
          {
             "data" : [
@@ -487,48 +307,48 @@
                   1
                ]
             ],
-            "name" : "Simon Proctor",
-            "id" : "Simon Proctor"
+            "id" : "Simon Proctor",
+            "name" : "Simon Proctor"
          },
          {
-            "name" : "Steven Wilson",
-            "id" : "Steven Wilson",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Steven Wilson",
+            "name" : "Steven Wilson"
          },
          {
-            "name" : "Stuart Little",
-            "id" : "Stuart Little",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Stuart Little",
+            "name" : "Stuart Little"
          },
          {
-            "name" : "Veesh Goldman",
-            "id" : "Veesh Goldman",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Veesh Goldman",
+            "name" : "Veesh Goldman"
          },
          {
-            "name" : "Yet Ebreo",
-            "id" : "Yet Ebreo",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ]
+            ],
+            "id" : "Yet Ebreo",
+            "name" : "Yet Ebreo"
          },
          {
             "data" : [
@@ -546,6 +366,190 @@
          }
       ]
    },
+   "legend" : {
+      "enabled" : 0
+   },
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         }
+      }
+   },
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Adam Russell",
+               "name" : "Adam Russell",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Andrezgz",
+               "name" : "Andrezgz",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Arne Sommer",
+               "name" : "Arne Sommer",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Athanasius",
+               "name" : "Athanasius",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Daniel Mantovani",
+               "name" : "Daniel Mantovani",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Daniel Mita",
+               "name" : "Daniel Mita",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Dave Jacoby",
+               "name" : "Dave Jacoby",
+               "y" : 4
+            },
+            {
+               "drilldown" : "David Ferrone",
+               "name" : "David Ferrone",
+               "y" : 2
+            },
+            {
+               "drilldown" : "E. Choroba",
+               "name" : "E. Choroba",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Feng Chang",
+               "name" : "Feng Chang",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Francis Whittle",
+               "name" : "Francis Whittle",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Guillermo Ramos",
+               "name" : "Guillermo Ramos",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Gustavo Chaves",
+               "name" : "Gustavo Chaves",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Joelle Maslak",
+               "name" : "Joelle Maslak",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Jorg Sommrey",
+               "name" : "Jorg Sommrey",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Kevin Colyer",
+               "name" : "Kevin Colyer",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Kian-Meng Ang",
+               "name" : "Kian-Meng Ang",
+               "y" : 4
+            },
+            {
+               "drilldown" : "Lakpa Tashi Bhutia",
+               "name" : "Lakpa Tashi Bhutia",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld",
+               "y" : 7
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "name" : "Lubos Kolouch",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Maxim Nechaev",
+               "name" : "Maxim Nechaev",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Paulo Custodio",
+               "name" : "Paulo Custodio",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Ruben Westerberg",
+               "name" : "Ruben Westerberg",
+               "y" : 4
+            },
+            {
+               "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Steven Wilson",
+               "name" : "Steven Wilson",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Stuart Little",
+               "name" : "Stuart Little",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Veesh Goldman",
+               "name" : "Veesh Goldman",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Yet Ebreo",
+               "name" : "Yet Ebreo",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Yozen Hernandez",
+               "name" : "Yozen Hernandez",
+               "y" : 3
+            }
+         ],
+         "name" : "The Weekly Challenge - 009"
+      }
+   ],
+   "subtitle" : {
+      "text" : "[Champions: 30] Last updated at 2025-06-07 21:41:40 GMT"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 009"
+   },
+   "tooltip" : {
+      "followPointer" : 1,
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
diff --git a/stats/pwc-challenge-010.json b/stats/pwc-challenge-010.json
index 3a38ebb39a..f02fc3dfb4 100644
--- a/stats/pwc-challenge-010.json
+++ b/stats/pwc-challenge-010.json
@@ -1,8 +1,6 @@
 {
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+   "chart" : {
+      "type" : "column"
    },
    "drilldown" : {
       "series" : [
@@ -17,18 +15,18 @@
                   1
                ]
             ],
-            "name" : "Adam Russell",
-            "id" : "Adam Russell"
+            "id" : "Adam Russell",
+            "name" : "Adam Russell"
          },
          {
-            "name" : "Alicia Bielsa",
-            "id" : "Alicia Bielsa",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ]
+            ],
+            "id" : "Alicia Bielsa",
+            "name" : "Alicia Bielsa"
          },
          {
             "data" : [
@@ -37,12 +35,10 @@
                   2
                ]
             ],
-            "name" : "Andrezgz",
-            "id" : "Andrezgz"
+            "id" : "Andrezgz",
+            "name" : "Andrezgz"
          },
          {
-            "name" : "Arne Sommer",
-            "id" : "Arne Sommer",
             "data" : [
                [
                   "Raku",
@@ -52,17 +48,19 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Arne Sommer",
+            "name" : "Arne Sommer"
          },
          {
-            "id" : "Athanasius",
-            "name" : "Athanasius",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Athanasius",
+            "name" : "Athanasius"
          },
          {
             "data" : [
@@ -75,28 +73,26 @@
             "name" : "Daniel Mantovani"
          },
          {
-            "id" : "Daniel Mita",
-            "name" : "Daniel Mita",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "id" : "Daniel Mita",
+            "name" : "Daniel Mita"
          },
          {
-            "id" : "David Ferrone",
-            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "David Ferrone",
+            "name" : "David Ferrone"
          },
          {
-            "id" : "Donald Hunter",
-            "name" : "Donald Hunter",
             "data" : [
                [
                   "Raku",
@@ -106,17 +102,19 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Donald Hunter",
+            "name" : "Donald Hunter"
          },
          {
-            "name" : "Duncan C. White",
-            "id" : "Duncan C. White",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Duncan C. White",
+            "name" : "Duncan C. White"
          },
          {
             "data" : [
@@ -133,14 +131,14 @@
             "name" : "E. Choroba"
          },
          {
-            "name" : "Feng Chang",
-            "id" : "Feng Chang",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Feng Chang",
+            "name" : "Feng Chang"
          },
          {
             "data" : [
@@ -153,18 +151,18 @@
                   1
                ]
             ],
-            "name" : "Francis Whittle",
-            "id" : "Francis Whittle"
+            "id" : "Francis Whittle",
+            "name" : "Francis Whittle"
          },
          {
-            "name" : "Guillermo Ramos",
-            "id" : "Guillermo Ramos",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Guillermo Ramos",
+            "name" : "Guillermo Ramos"
          },
          {
             "data" : [
@@ -177,8 +175,6 @@
             "name" : "Gustavo Chaves"
          },
          {
-            "name" : "Jaldhar H. Vyas",
-            "id" : "Jaldhar H. Vyas",
             "data" : [
                [
                   "Perl",
@@ -187,8 +183,14 @@
                [
                   "Raku",
                   2
+               ],
+               [
+                  "Blog",
+                  1
                ]
-            ]
+            ],
+            "id" : "Jaldhar H. Vyas",
+            "name" : "Jaldhar H. Vyas"
          },
          {
             "data" : [
@@ -205,22 +207,20 @@
                   1
                ]
             ],
-            "name" : "Joelle Maslak",
-            "id" : "Joelle Maslak"
+            "id" : "Joelle Maslak",
+            "name" : "Joelle Maslak"
          },
          {
-            "id" : "Jorg Sommrey",
-            "name" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey"
          },
          {
-            "id" : "Kian-Meng Ang",
-            "name" : "Kian-Meng Ang",
             "data" : [
                [
                   "Perl",
@@ -230,7 +230,9 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "id" : "Kian-Meng Ang",