- Added solutions by Flavio Poletti.

13 files changed, 1273 insertions, 1250 deletions

diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 4fe2cb1128..ba209e6b76 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,73 +1,98 @@
 {
    "series" : [
       {
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 128",
          "data" : [
             {
+               "name" : "E. Choroba",
                "y" : 2,
-               "drilldown" : "E. Choroba",
-               "name" : "E. Choroba"
+               "drilldown" : "E. Choroba"
+            },
+            {
+               "name" : "Flavio Poletti",
+               "drilldown" : "Flavio Poletti",
+               "y" : 6
             },
             {
+               "y" : 3,
                "drilldown" : "James Smith",
-               "name" : "James Smith",
-               "y" : 3
+               "name" : "James Smith"
             },
             {
                "name" : "Luca Ferrari",
-               "drilldown" : "Luca Ferrari",
-               "y" : 4
+               "y" : 4,
+               "drilldown" : "Luca Ferrari"
             },
             {
                "drilldown" : "Mark Anderson",
-               "name" : "Mark Anderson",
-               "y" : 2
+               "y" : 2,
+               "name" : "Mark Anderson"
             },
             {
-               "y" : 1,
                "name" : "Peter Campbell Smith",
+               "y" : 1,
                "drilldown" : "Peter Campbell Smith"
             },
             {
-               "drilldown" : "Roger Bell_West",
                "name" : "Roger Bell_West",
-               "y" : 4
+               "y" : 4,
+               "drilldown" : "Roger Bell_West"
             },
             {
-               "name" : "Simon Green",
                "drilldown" : "Simon Green",
-               "y" : 3
+               "y" : 3,
+               "name" : "Simon Green"
             },
             {
-               "name" : "Stuart Little",
                "drilldown" : "Stuart Little",
-               "y" : 4
+               "y" : 4,
+               "name" : "Stuart Little"
             }
-         ]
+         ],
+         "name" : "The Weekly Challenge - 128",
+         "colorByPoint" : 1
       }
    ],
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
    },
    "drilldown" : {
       "series" : [
          {
-            "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
+            "name" : "E. Choroba",
             "id" : "E. Choroba"
          },
          {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "name" : "Flavio Poletti",
+            "id" : "Flavio Poletti"
+         },
+         {
             "name" : "James Smith",
-            "id" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -77,9 +102,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "James Smith"
          },
          {
+            "id" : "Luca Ferrari",
             "name" : "Luca Ferrari",
             "data" : [
                [
@@ -90,30 +117,30 @@
                   "Blog",
                   2
                ]
-            ],
-            "id" : "Luca Ferrari"
+            ]
          },
          {
-            "name" : "Mark Anderson",
+            "id" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "id" : "Mark Anderson"
+            "name" : "Mark Anderson"
          },
          {
+            "id" : "Peter Campbell Smith",
             "name" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ],
-            "id" : "Peter Campbell Smith"
+            ]
          },
          {
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -124,7 +151,6 @@
                   2
                ]
             ],
-            "id" : "Roger Bell_West",
             "name" : "Roger Bell_West"
          },
          {
@@ -142,6 +168,7 @@
             "name" : "Simon Green"
          },
          {
+            "id" : "Stuart Little",
             "data" : [
                [
                   "Perl",
@@ -152,33 +179,29 @@
                   2
                ]
             ],
-            "id" : "Stuart Little",
             "name" : "Stuart Little"
          }
       ]
    },
-   "legend" : {
-      "enabled" : 0
+   "title" : {
+      "text" : "The Weekly Challenge - 128"
+   },
+   "chart" : {
+      "type" : "column"
    },
    "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/>"
+      "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/>"
    },
-   "subtitle" : {
-      "text" : "[Champions: 8] Last updated at 2021-09-01 09:00:49 GMT"
+   "xAxis" : {
+      "type" : "category"
    },
-   "title" : {
-      "text" : "The Weekly Challenge - 128"
+   "subtitle" : {
+      "text" : "[Champions: 9] Last updated at 2021-09-01 09:05:23 GMT"
    },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         }
-      }
+   "legend" : {
+      "enabled" : 0
    },
    "yAxis" : {
       "title" : {
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index da1c89fe1d..f85b6c6298 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,63 +1,63 @@
 {
+   "subtitle" : {
+      "text" : "Last updated at 2021-09-01 09:05:23 GMT"
+   },
+   "xAxis" : {
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      },
+      "type" : "category"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+   },
    "chart" : {
       "type" : "column"
    },
    "series" : [
       {
+         "name" : "Contributions",
          "dataLabels" : {
-            "y" : 10,
+            "rotation" : -90,
             "color" : "#FFFFFF",
+            "enabled" : "true",
             "align" : "right",
             "format" : "{point.y:.0f}",
-            "enabled" : "true",
-            "rotation" : -90,
             "style" : {
                "fontSize" : "13px",
                "fontFamily" : "Verdana, sans-serif"
-            }
+            },
+            "y" : 10
          },
          "data" : [
             [
                "Blog",
-               1841
+               1843
             ],
             [
                "Perl",
-               6122
+               6124
             ],
             [
                "Raku",
-               3785
+               3787
             ]
-         ],
-         "name" : "Contributions"
-      }
-   ],
-   "legend" : {
-      "enabled" : "false"
-   },
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      }
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2021-09-01 09:00:48 GMT"
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
-   },
-   "yAxis" : {
-      "min" : 0,
-      "title" : {
-         "text" : null
+         ]
       }
-   }
+   ]
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 11b2a57593..fd43e3d9ea 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,21 +1,23 @@
 {
-   "title" : {
-      "text" : "The Weekly Challenge Language"
+   "tooltip" : {
+      "followPointer" : "true",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>",
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>"
    },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
-      }
+   "legend" : {
+      "enabled" : "false"
    },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
       }
    },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2021-09-01 09:05:23 GMT"
+   },
    "drilldown" : {
       "series" : [
          {
@@ -33,10 +35,11 @@
                   11
                ]
             ],
-            "id" : "001",
-            "name" : "001"
+            "name" : "001",
+            "id" : "001"
          },
          {
+            "id" : "002",
             "name" : "002",
             "data" : [
                [
@@ -51,12 +54,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "002"
+            ]
          },
          {
-            "name" : "003",
-            "id" : "003",
             "data" : [
                [
                   "Perl",
@@ -70,10 +70,13 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "003",
+            "id" : "003"
          },
          {
             "id" : "004",
+            "name" : "004",
             "data" : [
                [
                   "Perl",
@@ -87,10 +90,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "004"
+            ]
          },
          {
+            "id" : "005",
             "name" : "005",
             "data" : [
                [
@@ -105,11 +108,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "005"
+            ]
          },
          {
-            "name" : "006",
             "id" : "006",
             "data" : [
                [
@@ -124,10 +125,12 @@
                   "Blog",
                   7
                ]
-            ]
+            ],
+            "name" : "006"
          },
          {
             "id" : "007",
+            "name" : "007",
             "data" : [
                [
                   "Perl",
@@ -141,8 +144,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "007"
+            ]
          },
          {
             "name" : "008",
@@ -164,7 +166,6 @@
          },
          {
             "name" : "009",
-            "id" : "009",
             "data" : [
                [
                   "Perl",
@@ -178,7 +179,8 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "id" : "009"
          },
          {
             "id" : "010",
@@ -199,7 +201,6 @@
             "name" : "010"
          },
          {
-            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -214,10 +215,11 @@
                   10
                ]
             ],
+            "name" : "011",
             "id" : "011"
          },
          {
-            "id" : "012",
+            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -232,9 +234,10 @@
                   11
                ]
             ],
-            "name" : "012"
+            "id" : "012"
          },
          {
+            "name" : "013",
             "data" : [
                [
                   "Perl",
@@ -249,11 +252,10 @@
                   13
                ]
             ],
-            "id" : "013",
-            "name" : "013"
+            "id" : "013"
          },
          {
-            "name" : "014",
+            "id" : "014",
             "data" : [
                [
                   "Perl",
@@ -268,9 +270,10 @@
                   15
                ]
             ],
-            "id" : "014"
+            "name" : "014"
          },
          {
+            "name" : "015",
             "data" : [
                [
                   "Perl",
@@ -285,11 +288,9 @@
                   15
                ]
             ],
-            "id" : "015",
-            "name" : "015"
+            "id" : "015"
          },
          {
-            "id" : "016",
             "data" : [
                [
                   "Perl",
@@ -304,9 +305,12 @@
                   12
                ]
             ],
-            "name" : "016"
+            "name" : "016",
+            "id" : "016"
          },
          {
+            "id" : "017",
+            "name" : "017",
             "data" : [
                [
                   "Perl",
@@ -320,13 +324,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "017",
-            "name" : "017"
+            ]
          },
          {
-            "name" : "018",
-            "id" : "018",
             "data" : [
                [
                   "Perl",
@@ -340,11 +340,11 @@
                   "Blog",
                   14
                ]
-            ]
+            ],
+            "name" : "018",
+            "id" : "018"
          },
          {
-            "name" : "019",
-            "id" : "019",
             "data" : [
                [
                   "Perl",
@@ -358,11 +358,13 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "019",
+            "id" : "019"
          },
          {
-            "name" : "020",
             "id" : "020",
+            "name" : "020",
             "data" : [
                [
                   "Perl",
@@ -379,6 +381,8 @@
             ]
          },
          {
+            "id" : "021",
+            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -392,12 +396,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "021",
-            "name" : "021"
+            ]
          },
          {
             "id" : "022",
+            "name" : "022",
             "data" : [
                [
                   "Perl",
@@ -411,11 +414,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "022"
+            ]
          },
          {
-            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -430,10 +431,11 @@
                   12
                ]
             ],
+            "name" : "023",
             "id" : "023"
          },
          {
-            "name" : "024",
+            "id" : "024",
             "data" : [
                [
                   "Perl",
@@ -448,9 +450,10 @@
                   11
                ]
             ],
-            "id" : "024"
+            "name" : "024"
          },
          {
+            "id" : "025",
             "data" : [
                [
                   "Perl",
@@ -465,7 +468,6 @@
                   12
                ]
             ],
-            "id" : "025",
             "name" : "025"
          },
          {
@@ -488,7 +490,6 @@
          },
          {
             "name" : "027",
-            "id" : "027",
             "data" : [
                [
                   "Perl",
@@ -502,10 +503,10 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "027"
          },
          {
-            "name" : "028",
             "data" : [
                [
                   "Perl",
@@ -520,9 +521,11 @@
                   9
                ]
             ],
+            "name" : "028",
             "id" : "028"
          },
          {
+            "name" : "029",
             "data" : [
                [
                   "Perl",
@@ -537,8 +540,7 @@
                   12
                ]
             ],
-            "id" : "029",
-            "name" : "029"
+            "id" : "029"
          },
          {
             "name" : "030",
@@ -573,12 +575,10 @@
                   9
                ]
             ],
-            "id" : "031",
-            "name" : "031"
+            "name" : "031",
+            "id" : "031"
          },
          {
-            "name" : "032",
-            "id" : "032",
             "data" : [
                [
                   "Perl",
@@ -592,10 +592,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "032",
+            "id" : "032"
          },
          {
-            "name" : "033",
             "id" : "033",
             "data" : [
                [
@@ -610,10 +611,10 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "033"
          },
          {
-            "name" : "034",
             "id" : "034",
             "data" : [
                [
@@ -628,11 +629,12 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "034"
          },
          {
-            "name" : "035",
             "id" : "035",
+            "name" : "035",
             "data" : [
                [
                   "Perl",
@@ -649,8 +651,6 @@
             ]
          },
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-            "name" : "036",
-            "id" : "036",
             "data" : [
                [
                   "Perl",
@@ -664,11 +664,12 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "036",
+            "id" : "036"
          },
          {
             "name" : "037",
-            "id" : "037",
             "data" : [
                [
                   "Perl",
@@ -682,9 +683,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "037"
          },
          {
+            "name" : "038",
             "data" : [
                [
                   "Perl",
@@ -699,11 +702,11 @@
                   12
                ]
             ],
-            "id" : "038",
-            "name" : "038"
+            "id" : "038"
          },
          {
             "id" : "039",
+            "name" : "039",
             "data" : [
                [
                   "Perl",
@@ -717,11 +720,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "039"
+            ]
          },
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-            "id" : "040",
+            "name" : "040",
             "data" : [
                [
                   "Perl",
@@ -736,9 +738,10 @@
                   10
                ]
             ],
-            "name" : "040"
+            "id" : "040"
          },
          {
+            "name" : "041",
             "data" : [
                [
                   "Perl",
@@ -753,10 +756,10 @@
                   9
                ]
             ],
-            "id" : "041",
-            "name" : "041"
+            "id" : "041"
          },
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+            "name" : "042",
             "data" : [
                [
                   "Perl",
@@ -771,10 +774,10 @@
                   11
                ]
             ],
-            "id" : "042",
-            "name" : "042"
+            "id" : "042"
          },
          {
+            "name" : "043",
             "data" : [
                [
                   "Perl",
@@ -789,10 +792,10 @@
                   11
                ]
             ],
-            "id" : "043",
-            "name" : "043"
+            "id" : "043"
          },
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+            "id" : "044",
             "name" : "044",
             "data" : [
                [
@@ -807,8 +810,7 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "044"
+            ]
          },
          {
             "data" : [
@@ -825,10 +827,11 @@
                   11
                ]
             ],
-            "id" : "045",
-            "name" : "045"
+            "name" : "045",
+            "id" : "045"
          },
          {
+            "id" : "046",
             "name" : "046",
             "data" : [
                [
@@ -843,11 +846,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "046"
+            ]
          },
          {
-            "id" : "047",
+            "name" : "047",
             "data" : [
                [
                   "Perl",
@@ -862,9 +864,11 @@
                   10
                ]
             ],
-            "name" : "047"
+            "id" : "047"
          },
          {
+            "id" : "048",
+            "name" : "048",
             "data" : [
                [
                   "Perl",
@@ -878,13 +882,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "048",
-            "name" : "048"
+            ]
          },
          {
             "name" : "049",
-            "id" : "049",
             "data" : [
                [
                   "Perl",
@@ -898,7 +899,8 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "049"
          },
          {
             "id" : "050",
@@ -919,7 +921,6 @@
             "name" : "050"
          },
          {
-            "name" : "051",
             "id" : "051",
             "data" : [
                [
@@ -934,11 +935,12 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "051"
          },
          {
-            "name" : "052",
             "id" : "052",
+            "name" : "052",
             "data" : [
                [
                   "Perl",
@@ -956,6 +958,7 @@
          },
          {
             "id" : "053",
+            "name" : "053",
             "data" : [
                [
                   "Perl",
@@ -969,10 +972,11 @@
                   "Blog",
                   15
                ]
-            ],
-            "name" : "053"
+            ]
          },
          {
+            "id" : "054",
+            "name" : "054",
             "data" : [
                [
                   "Perl",
@@ -986,11 +990,10 @@
                   "Blog",
                   18
                ]
-            ],
-            "id" : "054",
-            "name" : "054"
+            ]
          },
          {
+            "id" : "055",
             "data" : [
                [
                   "Perl",
@@ -1005,11 +1008,10 @@
                   14
                ]
             ],
-            "id" : "055",
             "name" : "055"
          },
          {
-            "name" : "056",
+            "id" : "056",
             "data" : [
                [
                   "Perl",
@@ -1024,11 +1026,10 @@
                   16
                ]
             ],
-            "id" : "056"
+            "name" : "056"
          },
          {
             "name" : "057",
-            "id" : "057",
             "data" : [
                [
                   "Perl",
@@ -1042,10 +1043,10 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "id" : "057"
          },
          {
-            "name" : "058",
             "data" : [
                [
                   "Perl",
@@ -1060,6 +1061,7 @@
                   13
                ]
             ],
+            "name" : "058",
             "id" : "058"
          },
          {
@@ -1077,11 +1079,10 @@
                   16
                ]
             ],
-            "id" : "059",
-            "name" : "059"
+            "name" : "059",
+            "id" : "059"
          },
          {
-            "id" : "060",
             "data" : [
                [
                   "Perl",
@@ -1096,10 +1097,10 @@
                   16
                ]
             ],
-            "name" : "060"
+            "name" : "060",
+            "id" : "060"
          },
          {
-            "id" : "061",
             "data" : [
                [
                   "Perl",
@@ -1114,10 +1115,10 @@
                   14
                ]
             ],
-            "name" : "061"
+            "name" : "061",
+            "id" : "061"
          },
          {
-            "name" : "062",
             "id" : "062",
             "data" : [
                [
@@ -1132,9 +1133,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "062"
          },
          {
+            "name" : "063",
             "data" : [
                [
                   "Perl",
@@ -1149,11 +1152,10 @@
                   13
                ]
             ],
-            "id" : "063",
-            "name" : "063"
+            "id" : "063"
          },
          {
-            "id" : "064",
+            "name" : "064",
             "data" : [
                [
                   "Perl",
@@ -1168,11 +1170,9 @@
                   16
                ]
             ],
-            "name" : "064"
+            "id" : "064"
          },
          {
-            "name" : "065",
-            "id" : "065",
             "data" : [
                [
                   "Perl",
@@ -1186,10 +1186,11 @@
                   "Blog",