diff --git a/exercises/alphametics/AlphameticsTest.cs b/exercises/alphametics/AlphameticsTest.cs
index ce325e38b8..84c930065d 100644
--- a/exercises/alphametics/AlphameticsTest.cs
+++ b/exercises/alphametics/AlphameticsTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.2.0 of the canonical data.
+// This file was auto-generated based on version 1.3.0 of the canonical data.
 
 using System;
 using System.Collections.Generic;
@@ -31,6 +31,19 @@ public void Leading_zero_solution_is_invalid()
         Assert.Throws<ArgumentException>(() => Alphametics.Solve("ACA + DD == BD"));
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void Puzzle_with_two_digits_final_carry()
+    {
+        var actual = Alphametics.Solve("A + A + A + A + A + A + A + A + A + A + A + B == BCC");
+        var expected = new Dictionary<char, int>
+        {
+            ['A'] = 9,
+            ['B'] = 1,
+            ['C'] = 0
+        };
+        Assert.Equal(expected, actual);
+    }
+
     [Fact(Skip = "Remove to run test")]
     public void Puzzle_with_four_letters()
     {
diff --git a/exercises/atbash-cipher/AtbashCipherTest.cs b/exercises/atbash-cipher/AtbashCipherTest.cs
index b333a49680..150a779c55 100644
--- a/exercises/atbash-cipher/AtbashCipherTest.cs
+++ b/exercises/atbash-cipher/AtbashCipherTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.2.0 of the canonical data.
 
 using Xunit;
 
@@ -75,4 +75,16 @@ public void Decode_all_the_letters()
     {
         Assert.Equal("thequickbrownfoxjumpsoverthelazydog", AtbashCipher.Decode("gsvjf rxpyi ldmul cqfnk hlevi gsvoz abwlt"));
     }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Decode_with_too_many_spaces()
+    {
+        Assert.Equal("exercism", AtbashCipher.Decode("vc vix    r hn"));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Decode_with_no_spaces()
+    {
+        Assert.Equal("anobstacleisoftenasteppingstone", AtbashCipher.Decode("zmlyhgzxovrhlugvmzhgvkkrmthglmv"));
+    }
 }
\ No newline at end of file
diff --git a/exercises/bracket-push/BracketPushTest.cs b/exercises/bracket-push/BracketPushTest.cs
index f87a41e2e4..718e1cca4d 100644
--- a/exercises/bracket-push/BracketPushTest.cs
+++ b/exercises/bracket-push/BracketPushTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.3.0 of the canonical data.
+// This file was auto-generated based on version 1.4.0 of the canonical data.
 
 using Xunit;
 
@@ -95,6 +95,13 @@ public void Paired_and_wrong_nested_brackets()
         Assert.False(BracketPush.IsPaired(value));
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void Paired_and_incomplete_brackets()
+    {
+        var value = "{}[";
+        Assert.False(BracketPush.IsPaired(value));
+    }
+
     [Fact(Skip = "Remove to run test")]
     public void Math_expression()
     {
diff --git a/exercises/grep/GrepTest.cs b/exercises/grep/GrepTest.cs
index 2c6f0c1e77..d60ada2f4a 100644
--- a/exercises/grep/GrepTest.cs
+++ b/exercises/grep/GrepTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.2.0 of the canonical data.
 
 using System;
 using System.IO;
@@ -139,6 +139,34 @@ public void One_file_no_matches_various_flags()
         Assert.Equal(expected, Grep.Match(pattern, flags, files));
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void One_file_one_match_file_flag_takes_precedence_over_line_flag()
+    {
+        var pattern = "ten";
+        var flags = "-n -l";
+        var files = new[] { "iliad.txt" };
+        var expected = "iliad.txt";
+        Assert.Equal(expected, Grep.Match(pattern, flags, files));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void One_file_several_matches_inverted_and_match_entire_lines_flags()
+    {
+        var pattern = "Illustrious into Ades premature,";
+        var flags = "-x -v";
+        var files = new[] { "iliad.txt" };
+        var expected = 
+            "Achilles sing, O Goddess! Peleus' son;\n" +
+            "His wrath pernicious, who ten thousand woes\n" +
+            "Caused to Achaia's host, sent many a soul\n" +
+            "And Heroes gave (so stood the will of Jove)\n" +
+            "To dogs and to all ravening fowls a prey,\n" +
+            "When fierce dispute had separated once\n" +
+            "The noble Chief Achilles from the son\n" +
+            "Of Atreus, Agamemnon, King of men.";
+        Assert.Equal(expected, Grep.Match(pattern, flags, files));
+    }
+
     [Fact(Skip = "Remove to run test")]
     public void Multiple_files_one_match_no_flags()
     {
@@ -251,6 +279,51 @@ public void Multiple_files_no_matches_various_flags()
         Assert.Equal(expected, Grep.Match(pattern, flags, files));
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void Multiple_files_several_matches_file_flag_takes_precedence_over_line_number_flag()
+    {
+        var pattern = "who";
+        var flags = "-n -l";
+        var files = new[] { "iliad.txt", "midsummer-night.txt", "paradise-lost.txt" };
+        var expected = 
+            "iliad.txt\n" +
+            "paradise-lost.txt";
+        Assert.Equal(expected, Grep.Match(pattern, flags, files));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Multiple_files_several_matches_inverted_and_match_entire_lines_flags()
+    {
+        var pattern = "Illustrious into Ades premature,";
+        var flags = "-x -v";
+        var files = new[] { "iliad.txt", "midsummer-night.txt", "paradise-lost.txt" };
+        var expected = 
+            "iliad.txt:Achilles sing, O Goddess! Peleus' son;\n" +
+            "iliad.txt:His wrath pernicious, who ten thousand woes\n" +
+            "iliad.txt:Caused to Achaia's host, sent many a soul\n" +
+            "iliad.txt:And Heroes gave (so stood the will of Jove)\n" +
+            "iliad.txt:To dogs and to all ravening fowls a prey,\n" +
+            "iliad.txt:When fierce dispute had separated once\n" +
+            "iliad.txt:The noble Chief Achilles from the son\n" +
+            "iliad.txt:Of Atreus, Agamemnon, King of men.\n" +
+            "midsummer-night.txt:I do entreat your grace to pardon me.\n" +
+            "midsummer-night.txt:I know not by what power I am made bold,\n" +
+            "midsummer-night.txt:Nor how it may concern my modesty,\n" +
+            "midsummer-night.txt:In such a presence here to plead my thoughts;\n" +
+            "midsummer-night.txt:But I beseech your grace that I may know\n" +
+            "midsummer-night.txt:The worst that may befall me in this case,\n" +
+            "midsummer-night.txt:If I refuse to wed Demetrius.\n" +
+            "paradise-lost.txt:Of Mans First Disobedience, and the Fruit\n" +
+            "paradise-lost.txt:Of that Forbidden Tree, whose mortal tast\n" +
+            "paradise-lost.txt:Brought Death into the World, and all our woe,\n" +
+            "paradise-lost.txt:With loss of Eden, till one greater Man\n" +
+            "paradise-lost.txt:Restore us, and regain the blissful Seat,\n" +
+            "paradise-lost.txt:Sing Heav'nly Muse, that on the secret top\n" +
+            "paradise-lost.txt:Of Oreb, or of Sinai, didst inspire\n" +
+            "paradise-lost.txt:That Shepherd, who first taught the chosen Seed";
+        Assert.Equal(expected, Grep.Match(pattern, flags, files));
+    }
+
     private const string IliadFileName = "iliad.txt";
     private const string IliadContents =
         "Achilles sing, O Goddess! Peleus' son;\n" +
diff --git a/exercises/leap/LeapTest.cs b/exercises/leap/LeapTest.cs
index 228ea69015..9af9431ef9 100644
--- a/exercises/leap/LeapTest.cs
+++ b/exercises/leap/LeapTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.3.0 of the canonical data.
+// This file was auto-generated based on version 1.4.0 of the canonical data.
 
 using Xunit;
 
@@ -27,4 +27,10 @@ public void Year_divisible_by_400_is_leap_year()
     {
         Assert.True(Leap.IsLeapYear(2000));
     }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Year_divisible_by_200_not_divisible_by_400_is_common_year()
+    {
+        Assert.False(Leap.IsLeapYear(1800));
+    }
 }
\ No newline at end of file
diff --git a/exercises/pangram/PangramTest.cs b/exercises/pangram/PangramTest.cs
index 6bb6f0c4a3..108caf8392 100644
--- a/exercises/pangram/PangramTest.cs
+++ b/exercises/pangram/PangramTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.4.0 of the canonical data.
+// This file was auto-generated based on version 1.4.1 of the canonical data.
 
 using Xunit;
 
diff --git a/exercises/phone-number/PhoneNumberTest.cs b/exercises/phone-number/PhoneNumberTest.cs
index 9eebabb269..5e500d9418 100644
--- a/exercises/phone-number/PhoneNumberTest.cs
+++ b/exercises/phone-number/PhoneNumberTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.6.0 of the canonical data.
+// This file was auto-generated based on version 1.6.1 of the canonical data.
 
 using System;
 using Xunit;
diff --git a/exercises/protein-translation/ProteinTranslationTest.cs b/exercises/protein-translation/ProteinTranslationTest.cs
index 0ce5f52782..a60595a03b 100644
--- a/exercises/protein-translation/ProteinTranslationTest.cs
+++ b/exercises/protein-translation/ProteinTranslationTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.1.1 of the canonical data.
 
 using Xunit;
 
diff --git a/exercises/rest-api/RestApiTest.cs b/exercises/rest-api/RestApiTest.cs
index d9baecdbde..b14b877641 100644
--- a/exercises/rest-api/RestApiTest.cs
+++ b/exercises/rest-api/RestApiTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.0.1 of the canonical data.
+// This file was auto-generated based on version 1.0.2 of the canonical data.
 
 using Xunit;
 
@@ -98,4 +98,4 @@ public void Lender_owes_borrower_less_than_new_loan()
         var expected = "[{\"name\":\"Adam\",\"owes\":{},\"owed_by\":{\"Bob\":1.0},\"balance\":1.0},{\"name\":\"Bob\",\"owes\":{\"Adam\":1.0},\"owed_by\":{},\"balance\":-1.0}]";
         Assert.Equal(expected, actual);
     }
-}
+}
\ No newline at end of file
diff --git a/exercises/robot-simulator/RobotSimulatorTest.cs b/exercises/robot-simulator/RobotSimulatorTest.cs
index 0ed4acb75b..f77b6849e7 100644
--- a/exercises/robot-simulator/RobotSimulatorTest.cs
+++ b/exercises/robot-simulator/RobotSimulatorTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 3.0.0 of the canonical data.
+// This file was auto-generated based on version 3.1.0 of the canonical data.
 
 using Xunit;
 
@@ -143,7 +143,7 @@ public void Moves_the_robot_forward_1_space_in_the_direction_it_is_pointing_decr
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Where_r_turn_right_l_turn_left_and_a_advance_the_robot_can_follow_a_series_of_instructions_and_end_up_with_the_correct_position_and_direction_instructions_to_move_east_and_north()
+    public void Where_r_turn_right_l_turn_left_and_a_advance_the_robot_can_follow_a_series_of_instructions_and_end_up_with_the_correct_position_and_direction_instructions_to_move_east_and_north_from_readme()
     {
         var sut = new RobotSimulator(Direction.North, new Coordinate(7, 3));
         sut.Simulate("RAALAL");
@@ -173,7 +173,7 @@ public void Where_r_turn_right_l_turn_left_and_a_advance_the_robot_can_follow_a_
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Where_r_turn_right_l_turn_left_and_a_advance_the_robot_can_follow_a_series_of_instructions_and_end_up_with_the_correct_position_and_direction_instructions_to_move_east_and_north1()
+    public void Where_r_turn_right_l_turn_left_and_a_advance_the_robot_can_follow_a_series_of_instructions_and_end_up_with_the_correct_position_and_direction_instructions_to_move_east_and_north()
     {
         var sut = new RobotSimulator(Direction.South, new Coordinate(8, 4));
         sut.Simulate("LAAARRRALLLL");
diff --git a/exercises/saddle-points/Example.cs b/exercises/saddle-points/Example.cs
index 4b17b1b7f1..5ec26956ae 100644
--- a/exercises/saddle-points/Example.cs
+++ b/exercises/saddle-points/Example.cs
@@ -17,7 +17,7 @@ public SaddlePoints(int[,] values)
 
     public IEnumerable<(int, int)> Calculate()
     {
-        return Coordinates().Where(IsSaddlePoint);
+        return Coordinates().Where(IsSaddlePoint).ToArray();
     }
 
     private bool IsSaddlePoint((int, int) coordinate)
diff --git a/exercises/saddle-points/SaddlePointsTest.cs b/exercises/saddle-points/SaddlePointsTest.cs
index 2419bfa828..84843dc4ff 100644
--- a/exercises/saddle-points/SaddlePointsTest.cs
+++ b/exercises/saddle-points/SaddlePointsTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.3.0 of the canonical data.
 
 using System;
 using Xunit;
@@ -44,7 +44,7 @@ public void Can_identify_lack_of_saddle_points_when_there_are_none()
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_identify_multiple_saddle_points()
+    public void Can_identify_multiple_saddle_points_in_a_column()
     {
         var matrix = new[,]
         {
@@ -58,6 +58,21 @@ public void Can_identify_multiple_saddle_points()
         Assert.Equal(expected, actual);
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void Can_identify_multiple_saddle_points_in_a_row()
+    {
+        var matrix = new[,]
+        {
+             { 6, 7, 8 },
+             { 5, 5, 5 },
+             { 7, 5, 6 }
+        };
+        var sut = new SaddlePoints(matrix);
+        var actual = sut.Calculate();
+        var expected = new[] { (1, 0), (1, 1), (1, 2) };
+        Assert.Equal(expected, actual);
+    }
+
     [Fact(Skip = "Remove to run test")]
     public void Can_identify_saddle_point_in_bottom_right_corner()
     {
@@ -72,4 +87,47 @@ public void Can_identify_saddle_point_in_bottom_right_corner()
         var expected = new[] { (2, 2) };
         Assert.Equal(expected, actual);
     }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Can_identify_saddle_points_in_a_non_square_matrix()
+    {
+        var matrix = new[,]
+        {
+             { 3, 1, 3 },
+             { 3, 2, 4 }
+        };
+        var sut = new SaddlePoints(matrix);
+        var actual = sut.Calculate();
+        var expected = new[] { (0, 0), (0, 2) };
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Can_identify_that_saddle_points_in_a_single_column_matrix_are_those_with_the_minimum_value()
+    {
+        var matrix = new[,]
+        {
+             { 2 },
+             { 1 },
+             { 4 },
+             { 1 }
+        };
+        var sut = new SaddlePoints(matrix);
+        var actual = sut.Calculate();
+        var expected = new[] { (1, 0), (3, 0) };
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Can_identify_that_saddle_points_in_a_single_row_matrix_are_those_with_the_maximum_value()
+    {
+        var matrix = new[,]
+        {
+             { 2, 5, 3, 5 }
+        };
+        var sut = new SaddlePoints(matrix);
+        var actual = sut.Calculate();
+        var expected = new[] { (0, 1), (0, 3) };
+        Assert.Equal(expected, actual);
+    }
 }
\ No newline at end of file
diff --git a/exercises/scale-generator/Example.cs b/exercises/scale-generator/Example.cs
index 9dfbd1134a..1efb9fe18c 100644
--- a/exercises/scale-generator/Example.cs
+++ b/exercises/scale-generator/Example.cs
@@ -14,12 +14,12 @@ public static class ScaleGenerator
     private static string[] SkipInterval(char interval, string[] scale) => scale.Skip(Intervals[interval]).ToArray();
     private static string[] Shift(int index, string[] scale) => scale.Skip(index).Concat(scale.Take(index)).ToArray();
 
-    public static string[] Pitches(string tonic)
+    public static string[] Chromatic(string tonic)
     {
-        return Pitches(tonic, "mmmmmmmmmmmm");
+        return Interval(tonic, "mmmmmmmmmmmm");
     }
 
-    public static string[] Pitches(string tonic, string pattern)
+    public static string[] Interval(string tonic, string pattern)
     {
         var scale = Scale(tonic);
         var index = Array.FindIndex(scale, pitch => string.Equals(pitch, tonic, StringComparison.OrdinalIgnoreCase));
diff --git a/exercises/scale-generator/ScaleGenerator.cs b/exercises/scale-generator/ScaleGenerator.cs
index 5473a3c5f9..8bc20d51eb 100644
--- a/exercises/scale-generator/ScaleGenerator.cs
+++ b/exercises/scale-generator/ScaleGenerator.cs
@@ -2,12 +2,12 @@
 
 public static class ScaleGenerator
 {
-    public static string[] Pitches(string tonic)
+    public static string[] Chromatic(string tonic)
     {
         throw new NotImplementedException("You need to implement this function.");
     }
 
-    public static string[] Pitches(string tonic, string pattern)
+    public static string[] Interval(string tonic, string pattern)
     {
         throw new NotImplementedException("You need to implement this function.");
     }
diff --git a/exercises/scale-generator/ScaleGeneratorTest.cs b/exercises/scale-generator/ScaleGeneratorTest.cs
index 3f5e9e0870..3699db2718 100644
--- a/exercises/scale-generator/ScaleGeneratorTest.cs
+++ b/exercises/scale-generator/ScaleGeneratorTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.0.0 of the canonical data.
+// This file was auto-generated based on version 2.0.0 of the canonical data.
 
 using Xunit;
 
@@ -8,118 +8,118 @@ public class ScaleGeneratorTest
     public void Chromatic_scale_with_sharps()
     {
         var expected = new[] { "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("C"));
+        Assert.Equal(expected, ScaleGenerator.Chromatic("C"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Chromatic_scale_with_flats()
     {
         var expected = new[] { "F", "Gb", "G", "Ab", "A", "Bb", "B", "C", "Db", "D", "Eb", "E" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("F"));
+        Assert.Equal(expected, ScaleGenerator.Chromatic("F"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Simple_major_scale()
     {
         var expected = new[] { "C", "D", "E", "F", "G", "A", "B" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("C", "MMmMMMm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("C", "MMmMMMm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Major_scale_with_sharps()
     {
         var expected = new[] { "G", "A", "B", "C", "D", "E", "F#" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("G", "MMmMMMm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("G", "MMmMMMm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Major_scale_with_flats()
     {
         var expected = new[] { "F", "G", "A", "Bb", "C", "D", "E" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("F", "MMmMMMm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("F", "MMmMMMm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Minor_scale_with_sharps()
     {
         var expected = new[] { "F#", "G#", "A", "B", "C#", "D", "E" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("f#", "MmMMmMM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("f#", "MmMMmMM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Minor_scale_with_flats()
     {
         var expected = new[] { "Bb", "C", "Db", "Eb", "F", "Gb", "Ab" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("bb", "MmMMmMM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("bb", "MmMMmMM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Dorian_mode()
     {
         var expected = new[] { "D", "E", "F", "G", "A", "B", "C" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("d", "MmMMMmM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("d", "MmMMMmM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Mixolydian_mode()
     {
         var expected = new[] { "Eb", "F", "G", "Ab", "Bb", "C", "Db" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("Eb", "MMmMMmM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("Eb", "MMmMMmM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Lydian_mode()
     {
         var expected = new[] { "A", "B", "C#", "D#", "E", "F#", "G#" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("a", "MMMmMMm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("a", "MMMmMMm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Phrygian_mode()
     {
         var expected = new[] { "E", "F", "G", "A", "B", "C", "D" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("e", "mMMMmMM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("e", "mMMMmMM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Locrian_mode()
     {
         var expected = new[] { "G", "Ab", "Bb", "C", "Db", "Eb", "F" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("g", "mMMmMMM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("g", "mMMmMMM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Harmonic_minor()
     {
         var expected = new[] { "D", "E", "F", "G", "A", "Bb", "Db" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("d", "MmMMmAm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("d", "MmMMmAm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Octatonic()
     {
         var expected = new[] { "C", "D", "D#", "F", "F#", "G#", "A", "B" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("C", "MmMmMmMm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("C", "MmMmMmMm"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Hexatonic()
     {
         var expected = new[] { "Db", "Eb", "F", "G", "A", "B" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("Db", "MMMMMM"));
+        Assert.Equal(expected, ScaleGenerator.Interval("Db", "MMMMMM"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Pentatonic()
     {
         var expected = new[] { "A", "B", "C#", "E", "F#" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("A", "MMAMA"));
+        Assert.Equal(expected, ScaleGenerator.Interval("A", "MMAMA"));
     }
 
     [Fact(Skip = "Remove to run test")]
     public void Enigmatic()
     {
         var expected = new[] { "G", "G#", "B", "C#", "D#", "F", "F#" };
-        Assert.Equal(expected, ScaleGenerator.Pitches("G", "mAMMMmm"));
+        Assert.Equal(expected, ScaleGenerator.Interval("G", "mAMMMmm"));
     }
 }
\ No newline at end of file
diff --git a/exercises/simple-cipher/Example.cs b/exercises/simple-cipher/Example.cs
index b93f450db5..ef78ab8316 100644
--- a/exercises/simple-cipher/Example.cs
+++ b/exercises/simple-cipher/Example.cs
@@ -1,7 +1,6 @@
 using System;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 
 public class SimpleCipher
 {
@@ -18,11 +17,9 @@ public SimpleCipher()
 
     public SimpleCipher(string key)
     {
-        Key = IsValidKey(key) ? key : throw new ArgumentException("Invalid key");
+        Key = key;
     }
 
-    private static bool IsValidKey(string key) => Regex.IsMatch(key, "^[a-z]+$");
-
     public string Encode(string plaintext)
     {
         var ciphertext = new StringBuilder(plaintext.Length);
diff --git a/exercises/simple-cipher/SimpleCipherTest.cs b/exercises/simple-cipher/SimpleCipherTest.cs
index f37284d626..e320f99c31 100644
--- a/exercises/simple-cipher/SimpleCipherTest.cs
+++ b/exercises/simple-cipher/SimpleCipherTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.2.0 of the canonical data.
 
 using System;
 using Xunit;
@@ -81,22 +81,4 @@ public void Substitution_cipher_can_handle_messages_longer_than_the_key()
         var sut = new SimpleCipher("abc");
         Assert.Equal("iboaqcnecbfcr", sut.Encode("iamapandabear"));
     }
-
-    [Fact(Skip = "Remove to run test")]
-    public void Incorrect_key_cipher_throws_an_error_with_an_all_uppercase_key()
-    {
-        Assert.Throws<ArgumentException>(() => new SimpleCipher("ABCDEF"));
-    }
-
-    [Fact(Skip = "Remove to run test")]
-    public void Incorrect_key_cipher_throws_an_error_with_a_numeric_key()
-    {
-        Assert.Throws<ArgumentException>(() => new SimpleCipher("12345"));
-    }
-
-    [Fact(Skip = "Remove to run test")]
-    public void Incorrect_key_cipher_throws_an_error_with_empty_key()
-    {
-        Assert.Throws<ArgumentException>(() => new SimpleCipher(""));
-    }
 }
\ No newline at end of file
diff --git a/exercises/sum-of-multiples/Example.cs b/exercises/sum-of-multiples/Example.cs
index d80e5f73f2..63ba4cc55b 100644
--- a/exercises/sum-of-multiples/Example.cs
+++ b/exercises/sum-of-multiples/Example.cs
@@ -6,7 +6,7 @@ public static class SumOfMultiples
     public static int Sum(IEnumerable<int> multiples, int max)
     {
         return Enumerable.Range(1, max - 1)
-            .Where(i => multiples.Any(m => i % m == 0))
+            .Where(i => multiples.Any(m => m != 0 && i % m == 0))
             .Sum();
     }
 }
\ No newline at end of file
diff --git a/exercises/sum-of-multiples/SumOfMultiplesTest.cs b/exercises/sum-of-multiples/SumOfMultiplesTest.cs
index d2e97016a7..ac5a7be113 100644
--- a/exercises/sum-of-multiples/SumOfMultiplesTest.cs
+++ b/exercises/sum-of-multiples/SumOfMultiplesTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.2.0 of the canonical data.
+// This file was auto-generated based on version 1.5.0 of the canonical data.
 
 using System;
 using Xunit;
@@ -6,80 +6,98 @@
 public class SumOfMultiplesTest
 {
     [Fact]
-    public void Multiples_of_3_or_5_up_to_1()
+    public void No_multiples_within_limit()
     {
         Assert.Equal(0, SumOfMultiples.Sum(new[] { 3, 5 }, 1));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_3_or_5_up_to_4()
+    public void One_factor_has_multiples_within_limit()
     {
         Assert.Equal(3, SumOfMultiples.Sum(new[] { 3, 5 }, 4));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_3_up_to_7()
+    public void More_than_one_multiple_within_limit()
     {
         Assert.Equal(9, SumOfMultiples.Sum(new[] { 3 }, 7));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_3_or_5_up_to_10()
+    public void More_than_one_factor_with_multiples_within_limit()
     {
         Assert.Equal(23, SumOfMultiples.Sum(new[] { 3, 5 }, 10));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_3_or_5_up_to_100()
+    public void Each_multiple_is_only_counted_once()
     {
         Assert.Equal(2318, SumOfMultiples.Sum(new[] { 3, 5 }, 100));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_3_or_5_up_to_1000()
+    public void A_much_larger_limit()
     {
         Assert.Equal(233168, SumOfMultiples.Sum(new[] { 3, 5 }, 1000));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_7_13_or_17_up_to_20()
+    public void Three_factors()
     {
         Assert.Equal(51, SumOfMultiples.Sum(new[] { 7, 13, 17 }, 20));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_4_or_6_up_to_15()
+    public void Factors_not_relatively_prime()
     {
         Assert.Equal(30, SumOfMultiples.Sum(new[] { 4, 6 }, 15));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_5_6_or_8_up_to_150()
+    public void Some_pairs_of_factors_relatively_prime_and_some_not()
     {
         Assert.Equal(4419, SumOfMultiples.Sum(new[] { 5, 6, 8 }, 150));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_5_or_25_up_to_51()
+    public void One_factor_is_a_multiple_of_another()
     {
         Assert.Equal(275, SumOfMultiples.Sum(new[] { 5, 25 }, 51));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_43_or_47_up_to_10000()
+    public void Much_larger_factors()
     {
         Assert.Equal(2203160, SumOfMultiples.Sum(new[] { 43, 47 }, 10000));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_1_up_to_100()
+    public void All_numbers_are_multiples_of_1()
     {
         Assert.Equal(4950, SumOfMultiples.Sum(new[] { 1 }, 100));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Multiples_of_an_empty_list_up_to_10000()
+    public void No_factors_means_an_empty_sum()
     {
         Assert.Equal(0, SumOfMultiples.Sum(Array.Empty<int>(), 10000));
     }
+
+    [Fact(Skip = "Remove to run test")]
+    public void The_only_multiple_of_0_is_0()
+    {
+        Assert.Equal(0, SumOfMultiples.Sum(new[] { 0 }, 1));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void The_factor_0_does_not_affect_the_sum_of_multiples_of_other_factors()
+    {
+        Assert.Equal(3, SumOfMultiples.Sum(new[] { 3, 0 }, 4));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Solutions_using_include_exclude_must_extend_to_cardinality_greater_than_3()
+    {
+        Assert.Equal(39614537, SumOfMultiples.Sum(new[] { 2, 3, 5, 7, 11 }, 10000));
+    }
 }
\ No newline at end of file
diff --git a/exercises/triangle/TriangleTest.cs b/exercises/triangle/TriangleTest.cs
index fee4a183fa..1631f28544 100644
--- a/exercises/triangle/TriangleTest.cs
+++ b/exercises/triangle/TriangleTest.cs
@@ -1,4 +1,4 @@
-// This file was auto-generated based on version 1.1.0 of the canonical data.
+// This file was auto-generated based on version 1.2.0 of the canonical data.
 
 using Xunit;
 
@@ -65,11 +65,23 @@ public void Returns_true_if_the_triangle_is_isosceles_false_if_no_sides_are_equa
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Returns_true_if_the_triangle_is_isosceles_sides_that_violate_triangle_inequality_are_not_isosceles_even_if_two_are_equal()
+    public void Returns_true_if_the_triangle_is_isosceles_sides_that_violate_triangle_inequality_are_not_isosceles_even_if_two_are_equal_1_()
     {
         Assert.False(Triangle.IsIsosceles(1, 1, 3));
     }
 
+    [Fact(Skip = "Remove to run test")]
+    public void Returns_true_if_the_triangle_is_isosceles_sides_that_violate_triangle_inequality_are_not_isosceles_even_if_two_are_equal_2_()
+    {
+        Assert.False(Triangle.IsIsosceles(1, 3, 1));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Returns_true_if_the_triangle_is_isosceles_sides_that_violate_triangle_inequality_are_not_isosceles_even_if_two_are_equal_3_()
+    {
+        Assert.False(Triangle.IsIsosceles(3, 1, 1));
+    }
+
     [Fact(Skip = "Remove to run test")]
     public void Returns_true_if_the_triangle_is_isosceles_sides_may_be_floats()
     {
diff --git a/generators/Exercises/Generators/SaddlePoints.cs b/generators/Exercises/Generators/SaddlePoints.cs
index afc1ca6493..e65d5003b4 100644
--- a/generators/Exercises/Generators/SaddlePoints.cs
+++ b/generators/Exercises/Generators/SaddlePoints.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Exercism.CSharp.Output;
 using Newtonsoft.Json.Linq;
 
@@ -43,7 +44,7 @@ private static (string, object)[] ToTupleCollection(Array array)
                 tuples.Add((current["row"].ToString(), current["column"].ToString()));
             }
 
-            return tuples.ToArray();
+            return tuples.OrderBy(x => x).ToArray();
         }
     }
 }