- Added blog by Yary H.

34 files changed, 4380 insertions, 4350 deletions

diff --git a/challenge-020/yary-h/blog.txt b/challenge-020/yary-h/blog.txt
new file mode 100644
index 0000000000..7c6ba09716
--- /dev/null
+++ b/challenge-020/yary-h/blog.txt
@@ -0,0 +1 @@
+http://blogs.perl.org/users/yary/2019/08/splitting-on-a-change-challenge-20-task-1.html
diff --git a/challenge-020/yary-h/perl5/ch-1.sh b/challenge-020/yary-h/perl5/ch-1.sh
new file mode 100644
index 0000000000..9492f04857
--- /dev/null
+++ b/challenge-020/yary-h/perl5/ch-1.sh
@@ -0,0 +1 @@
+perl -E 'say join " ",split /(?<=(.))(?!\1)/,scalar ABBCDEEF'
diff --git a/challenge-020/yary-h/perl6/ch-1.p6 b/challenge-020/yary-h/perl6/ch-1.p6
new file mode 100644
index 0000000000..3dab55e816
--- /dev/null
+++ b/challenge-020/yary-h/perl6/ch-1.p6
@@ -0,0 +1,5 @@
+#!/usr/bin/env perl6
+
+use v6;
+
+say "ABBCDEEF".split(/<?before (.) {} :my $c=$0;><!after $c> /).perl("", "A", "BB", "C", "D", "EE", "F").Seq
diff --git a/stats/pwc-challenge-001.json b/stats/pwc-challenge-001.json
index aad1f3f904..7a5fd62fd6 100644
--- a/stats/pwc-challenge-001.json
+++ b/stats/pwc-challenge-001.json
@@ -1,11 +1,286 @@
 {
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "name" : "Perl Weekly Challenge - 001",
+         "data" : [
+            {
+               "name" : "Adam Russell",
+               "y" : 3,
+               "drilldown" : "Adam Russell"
+            },
+            {
+               "name" : "Ailbhe Tweedie",
+               "drilldown" : "Ailbhe Tweedie",
+               "y" : 1
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Alex Daniel",
+               "name" : "Alex Daniel"
+            },
+            {
+               "drilldown" : "Andrezgz",
+               "y" : 2,
+               "name" : "Andrezgz"
+            },
+            {
+               "name" : "Antonio Gamiz",
+               "drilldown" : "Antonio Gamiz",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Arpad Toth",
+               "y" : 2,
+               "name" : "Arpad Toth"
+            },
+            {
+               "name" : "Athanasius",
+               "y" : 2,
+               "drilldown" : "Athanasius"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Bob Kleemann",
+               "name" : "Bob Kleemann"
+            },
+            {
+               "name" : "Daniel Mantovani",
+               "drilldown" : "Daniel Mantovani",
+               "y" : 1
+            },
+            {
+               "name" : "Dave Cross",
+               "y" : 3,
+               "drilldown" : "Dave Cross"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Dave Jacoby",
+               "name" : "Dave Jacoby"
+            },
+            {
+               "name" : "David Kayal",
+               "y" : 2,
+               "drilldown" : "David Kayal"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Doug Schrag",
+               "name" : "Doug Schrag"
+            },
+            {
+               "name" : "Dr James A. Smith",
+               "y" : 4,
+               "drilldown" : "Dr James A. Smith"
+            },
+            {
+               "name" : "Duncan C. White",
+               "y" : 2,
+               "drilldown" : "Duncan C. White"
+            },
+            {
+               "name" : "Eddy HS",
+               "y" : 2,
+               "drilldown" : "Eddy HS"
+            },
+            {
+               "name" : "Finley",
+               "drilldown" : "Finley",
+               "y" : 2
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Fred Zinn",
+               "name" : "Fred Zinn"
+            },
+            {
+               "name" : "Freddie B",
+               "y" : 2,
+               "drilldown" : "Freddie B"
+            },
+            {
+               "drilldown" : "Gustavo Chaves",
+               "y" : 1,
+               "name" : "Gustavo Chaves"
+            },
+            {
+               "name" : "JJ Merelo",
+               "drilldown" : "JJ Merelo",
+               "y" : 2
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Jeff",
+               "name" : "Jeff"
+            },
+            {
+               "drilldown" : "Jeremy Carman",
+               "y" : 2,
+               "name" : "Jeremy Carman"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Jim Bacon",
+               "name" : "Jim Bacon"
+            },
+            {
+               "y" : 5,
+               "drilldown" : "Jo Christian Oterhals",
+               "name" : "Jo Christian Oterhals"
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Joelle Maslak",
+               "name" : "Joelle Maslak"
+            },
+            {
+               "name" : "John Barrett",
+               "y" : 1,
+               "drilldown" : "John Barrett"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Juan Caballero",
+               "name" : "Juan Caballero"
+            },
+            {
+               "drilldown" : "Khalid",
+               "y" : 2,
+               "name" : "Khalid"
+            },
+            {
+               "name" : "Kian-Meng Ang",
+               "y" : 3,
+               "drilldown" : "Kian-Meng Ang"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Kivanc Yazan",
+               "name" : "Kivanc Yazan"
+            },
+            {
+               "name" : "Lars Balker",
+               "drilldown" : "Lars Balker",
+               "y" : 4
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld"
+            },
+            {
+               "drilldown" : "Mark Senn",
+               "y" : 2,
+               "name" : "Mark Senn"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Martin Mugeni",
+               "name" : "Martin Mugeni"
+            },
+            {
+               "name" : "Neil Bowers",
+               "drilldown" : "Neil Bowers",
+               "y" : 1
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Nick Logan",
+               "name" : "Nick Logan"
+            },
+            {
+               "name" : "Oleksii Tsvietnov",
+               "drilldown" : "Oleksii Tsvietnov",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Ozzy",
+               "name" : "Ozzy"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Pavel Jurca",
+               "name" : "Pavel Jurca"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Pete Houston",
+               "name" : "Pete Houston"
+            },
+            {
+               "name" : "Philippe Bruhat",
+               "drilldown" : "Philippe Bruhat",
+               "y" : 3
+            },
+            {
+               "name" : "Prajith P",
+               "y" : 1,
+               "drilldown" : "Prajith P"
+            },
+            {
+               "name" : "Sean Meininger",
+               "y" : 2,
+               "drilldown" : "Sean Meininger"
+            },
+            {
+               "name" : "Simon Proctor",
+               "drilldown" : "Simon Proctor",
+               "y" : 6
+            },
+            {
+               "name" : "Simon Reinhardt",
+               "drilldown" : "Simon Reinhardt",
+               "y" : 2
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Steve Rogerson",
+               "name" : "Steve Rogerson"
+            },
+            {
+               "drilldown" : "Steven Wilson",
+               "y" : 2,
+               "name" : "Steven Wilson"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Tiago Stock",
+               "name" : "Tiago Stock"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Tore Andersson",
+               "name" : "Tore Andersson"
+            },
+            {
+               "drilldown" : "Veesh Goldman",
+               "y" : 1,
+               "name" : "Veesh Goldman"
+            },
+            {
+               "name" : "William Gilmore",
+               "y" : 1,
+               "drilldown" : "William Gilmore"
+            }
+         ]
+      }
+   ],
+   "legend" : {
+      "enabled" : 0
+   },
    "xAxis" : {
       "type" : "category"
    },
    "drilldown" : {
       "series" : [
          {
-            "id" : "Adam Russell",
             "data" : [
                [
                   "Perl 5",
@@ -16,27 +291,28 @@
                   1
                ]
             ],
-            "name" : "Adam Russell"
+            "name" : "Adam Russell",
+            "id" : "Adam Russell"
          },
          {
-            "name" : "Ailbhe Tweedie",
+            "id" : "Ailbhe Tweedie",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
             ],
-            "id" : "Ailbhe Tweedie"
+            "name" : "Ailbhe Tweedie"
          },
          {
-            "id" : "Alex Daniel",
             "name" : "Alex Daniel",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
-            ]
+            ],
+            "id" : "Alex Daniel"
          },
          {
             "id" : "Andrezgz",
@@ -49,14 +325,14 @@
             ]
          },
          {
+            "id" : "Antonio Gamiz",
+            "name" : "Antonio Gamiz",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
-            ],
-            "name" : "Antonio Gamiz",
-            "id" : "Antonio Gamiz"
+            ]
          },
          {
             "id" : "Arpad Toth",
@@ -70,22 +346,22 @@
          },
          {
             "id" : "Athanasius",
+            "name" : "Athanasius",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ],
-            "name" : "Athanasius"
+            ]
          },
          {
-            "name" : "Bob Kleemann",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
+            "name" : "Bob Kleemann",
             "id" : "Bob Kleemann"
          },
          {
@@ -113,6 +389,7 @@
             "id" : "Dave Cross"
          },
          {
+            "id" : "Dave Jacoby",
             "name" : "Dave Jacoby",
             "data" : [
                [
@@ -123,18 +400,17 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "Dave Jacoby"
+            ]
          },
          {
+            "id" : "David Kayal",
             "name" : "David Kayal",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ],
-            "id" : "David Kayal"
+            ]
          },
          {
             "name" : "Doug Schrag",
@@ -147,8 +423,6 @@
             "id" : "Doug Schrag"
          },
          {
-            "id" : "Dr James A. Smith",
-            "name" : "Dr James A. Smith",
             "data" : [
                [
                   "Perl 5",
@@ -158,17 +432,19 @@
                   "Perl 6",
                   2
                ]
-            ]
+            ],
+            "name" : "Dr James A. Smith",
+            "id" : "Dr James A. Smith"
          },
          {
             "id" : "Duncan C. White",
-            "name" : "Duncan C. White",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ]
+            ],
+            "name" : "Duncan C. White"
          },
          {
             "id" : "Eddy HS",
@@ -181,14 +457,14 @@
             "name" : "Eddy HS"
          },
          {
+            "id" : "Finley",
             "name" : "Finley",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
-            ],
-            "id" : "Finley"
+            ]
          },
          {
             "data" : [
@@ -201,24 +477,24 @@
             "id" : "Fred Zinn"
          },
          {
-            "id" : "Freddie B",
+            "name" : "Freddie B",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "name" : "Freddie B"
+            "id" : "Freddie B"
          },
          {
-            "id" : "Gustavo Chaves",
             "name" : "Gustavo Chaves",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
-            ]
+            ],
+            "id" : "Gustavo Chaves"
          },
          {
             "id" : "JJ Merelo",
@@ -236,6 +512,7 @@
          },
          {
             "id" : "Jaldhar H. Vyas",
+            "name" : "Jaldhar H. Vyas",
             "data" : [
                [
                   "Perl 5",
@@ -245,8 +522,7 @@
                   "Perl 6",
                   2
                ]
-            ],
-            "name" : "Jaldhar H. Vyas"
+            ]
          },
          {
             "name" : "Jeff",
@@ -273,16 +549,17 @@
             ]
          },
          {
-            "id" : "Jim Bacon",
+            "name" : "Jim Bacon",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
             ],
-            "name" : "Jim Bacon"
+            "id" : "Jim Bacon"
          },
          {
+            "name" : "Jo Christian Oterhals",
             "data" : [
                [
                   "Perl 5",
@@ -297,7 +574,6 @@
                   1
                ]
             ],
-            "name" : "Jo Christian Oterhals",
             "id" : "Jo Christian Oterhals"
          },
          {
@@ -315,37 +591,37 @@
             "name" : "Joelle Maslak"
          },
          {
-            "id" : "John Barrett",
             "name" : "John Barrett",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
-            ]
+            ],
+            "id" : "John Barrett"
          },
          {
+            "id" : "Juan Caballero",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "name" : "Juan Caballero",
-            "id" : "Juan Caballero"
+            "name" : "Juan Caballero"
          },
          {
-            "id" : "Khalid",
-            "name" : "Khalid",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ]
+            ],
+            "name" : "Khalid",
+            "id" : "Khalid"
          },
          {
-            "id" : "Kian-Meng Ang",
+            "name" : "Kian-Meng Ang",
             "data" : [
                [
                   "Perl 5",
@@ -356,19 +632,20 @@
                   1
                ]
             ],
-            "name" : "Kian-Meng Ang"
+            "id" : "Kian-Meng Ang"
          },
          {
-            "name" : "Kivanc Yazan",
+            "id" : "Kivanc Yazan",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "id" : "Kivanc Yazan"
+            "name" : "Kivanc Yazan"
          },
          {
+            "name" : "Lars Balker",
             "data" : [
                [
                   "Perl 5",
@@ -379,10 +656,11 @@
                   2
                ]
             ],
-            "name" : "Lars Balker",
             "id" : "Lars Balker"
          },
          {
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl 5",
@@ -396,29 +674,27 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Laurent Rosenfeld",
-            "id" : "Laurent Rosenfeld"
+            ]
          },
          {
-            "name" : "Mark Senn",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
             ],
+            "name" : "Mark Senn",
             "id" : "Mark Senn"
          },
          {
-            "id" : "Martin Mugeni",
-            "name" : "Martin Mugeni",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
-            ]
+            ],
+            "name" : "Martin Mugeni",
+            "id" : "Martin Mugeni"
          },
          {
             "data" : [
@@ -445,47 +721,47 @@
             "id" : "Nick Logan"
          },
          {
+            "id" : "Oleksii Tsvietnov",
             "name" : "Oleksii Tsvietnov",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ],
-            "id" : "Oleksii Tsvietnov"
+            ]
          },
          {
-            "id" : "Ozzy",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
             ],
-            "name" : "Ozzy"
+            "name" : "Ozzy",
+            "id" : "Ozzy"
          },
          {
+            "id" : "Pavel Jurca",
+            "name" : "Pavel Jurca",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ],
-            "name" : "Pavel Jurca",
-            "id" : "Pavel Jurca"
+            ]
          },
          {
-            "id" : "Pete Houston",
+            "name" : "Pete Houston",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "name" : "Pete Houston"
+            "id" : "Pete Houston"
          },
          {
-            "name" : "Philippe Bruhat",
+            "id" : "Philippe Bruhat",
             "data" : [
                [
                   "Perl 5",
@@ -496,7 +772,7 @@
                   1
                ]
             ],
-            "id" : "Philippe Bruhat"
+            "name" : "Philippe Bruhat"
          },
          {
             "name" : "Prajith P",
@@ -509,17 +785,16 @@
             "id" : "Prajith P"
          },
          {
-            "id" : "Sean Meininger",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
             ],
-            "name" : "Sean Meininger"
+            "name" : "Sean Meininger",
+            "id" : "Sean Meininger"
          },
          {
-            "name" : "Simon Proctor",
             "data" : [
                [
                   "Perl 5",
@@ -534,6 +809,7 @@
                   2
                ]
             ],
+            "name" : "Simon Proctor",
             "id" : "Simon Proctor"
          },
          {
@@ -548,6 +824,7 @@
          },
          {
             "id" : "Steve Rogerson",
+            "name" : "Steve Rogerson",
             "data" : [
                [
                   "Perl 5",
@@ -557,28 +834,27 @@
                   "Perl 6",
                   2
                ]
-            ],
-            "name" : "Steve Rogerson"
+            ]
          },
          {
-            "name" : "Steven Wilson",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
+            "name" : "Steven Wilson",
             "id" : "Steven Wilson"
          },
          {
+            "id" : "Tiago Stock",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
             ],
-            "name" : "Tiago Stock",
-            "id" : "Tiago Stock"
+            "name" : "Tiago Stock"
          },
          {
             "name" : "Tore Andersson",
@@ -591,14 +867,14 @@
             "id" : "Tore Andersson"
          },
          {
+            "id" : "Veesh Goldman",
+            "name" : "Veesh Goldman",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
-            ],
-            "name" : "Veesh Goldman",
-            "id" : "Veesh Goldman"
+            ]
          },
          {
             "id" : "William Gilmore",
@@ -612,308 +888,32 @@
          }
       ]
    },
-   "subtitle" : {
-      "text" : "[Champions: 53] Last updated at 2019-08-22 11:53:03 GMT"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "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" : {
+         "borderWidth" : 0,
          "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
+            "format" : "{point.y}",
+            "enabled" : 1
+         }
       }
    },
    "title" : {
       "text" : "Perl Weekly Challenge - 001"
    },
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "name" : "Perl Weekly Challenge - 001",
-         "data" : [
-            {
-               "name" : "Adam Russell",
-               "y" : 3,
-               "drilldown" : "Adam Russell"
-            },
-            {
-               "name" : "Ailbhe Tweedie",
-               "drilldown" : "Ailbhe Tweedie",
-               "y" : 1
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Alex Daniel",
-               "name" : "Alex Daniel"
-            },
-            {
-               "drilldown" : "Andrezgz",
-               "y" : 2,
-               "name" : "Andrezgz"
-            },
-            {
-               "name" : "Antonio Gamiz",
-               "y" : 2,
-               "drilldown" : "Antonio Gamiz"
-            },
-            {
-               "drilldown" : "Arpad Toth",
-               "y" : 2,
-               "name" : "Arpad Toth"
-            },
-            {
-               "name" : "Athanasius",
-               "y" : 2,
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Bob Kleemann",
-               "y" : 2,
-               "name" : "Bob Kleemann"
-            },
-            {
-               "name" : "Daniel Mantovani",
-               "y" : 1,
-               "drilldown" : "Daniel Mantovani"
-            },
-            {
-               "name" : "Dave Cross",
-               "y" : 3,
-               "drilldown" : "Dave Cross"
-            },
-            {
-               "name" : "Dave Jacoby",
-