diff --git a/2024/ruby/.rubocop.yml b/2024/ruby/.rubocop.yml
index b060ad6..eb7e48e 100644
--- a/2024/ruby/.rubocop.yml
+++ b/2024/ruby/.rubocop.yml
@@ -1,17 +1,16 @@
-require: rubocop-rspec
+require:
+  - rubocop-rspec
+  - rubocop-rake
 
 AllCops:
   Exclude:
     - bin/**/*
     - spec/spec_helper.rb
     - vendor/**/*
-
 Style/Documentation:
   Enabled: false
 Style/FrozenStringLiteralComment:
   Enabled: false
-Style/StringLiterals:
-  Enabled: false
 Style/TrailingCommaInHashLiteral:
   Enabled: false
 Style/NumericPredicate:
@@ -20,4 +19,10 @@ Metrics/BlockLength:
   Exclude:
     - spec/**/*
 
+
+RSpec/ExampleLength:
+  Max: 20
+RSpec/MultipleExpectations:
+  Enabled: false
+
 inherit_from: .rubocop_todo.yml
diff --git a/2024/ruby/.rubocop_todo.yml b/2024/ruby/.rubocop_todo.yml
index 81668af..0d0b31c 100644
--- a/2024/ruby/.rubocop_todo.yml
+++ b/2024/ruby/.rubocop_todo.yml
@@ -1,7 +1,50 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2024-12-01 17:39:10 UTC using RuboCop version 1.69.0.
+# on 2024-12-05 02:17:24 UTC using RuboCop version 1.69.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 1
+# Configuration parameters: AllowedMethods, AllowedPatterns, CountRepeatedAttributes.
+Metrics/AbcSize:
+  Max: 24
+
+# Offense count: 5
+# Configuration parameters: CountComments, CountAsOne, AllowedMethods, AllowedPatterns.
+# AllowedMethods: refine
+Metrics/BlockLength:
+  Max: 161
+
+# Offense count: 1
+# Configuration parameters: CountComments, CountAsOne.
+Metrics/ClassLength:
+  Max: 120
+
+# Offense count: 2
+# Configuration parameters: EnforcedStyle, AllowedPatterns.
+# SupportedStyles: snake_case, camelCase
+Naming/MethodName:
+  Exclude:
+    - 'lib/advent_04_ceres_search.rb'
+    - 'test.rb'
+
+# Offense count: 2
+# Configuration parameters: EnforcedStyle, CheckMethodNames, CheckSymbols, AllowedIdentifiers, AllowedPatterns.
+# SupportedStyles: snake_case, normalcase, non_integer
+# AllowedIdentifiers: capture3, iso8601, rfc1123_date, rfc822, rfc2822, rfc3339, x86_64
+Naming/VariableNumber:
+  Exclude:
+    - 'lib/advent_04_ceres_search.rb'
+
+# Offense count: 4
+# Configuration parameters: AllowedConstants.
+Style/Documentation:
+  Exclude:
+    - 'spec/**/*'
+    - 'test/**/*'
+    - 'lib/advent_01_hystorian_hysteria.rb'
+    - 'lib/advent_02_red_nosed_reports.rb'
+    - 'lib/advent_03_mull_it_over.rb'
+    - 'lib/advent_04_ceres_search.rb'
diff --git a/2024/ruby/Gemfile b/2024/ruby/Gemfile
index d42529d..6a8e48d 100644
--- a/2024/ruby/Gemfile
+++ b/2024/ruby/Gemfile
@@ -5,7 +5,14 @@ source 'https://rubygems.org'
 ruby File.open('.ruby-version', 'rb') { |f| f.read.chomp }
 
 gem 'awesome_print'
+
+gem 'guard'
+gem 'guard-rspec', require: false
+
 gem 'pry', '~> 0.15.0'
+
+gem 'rake', '~> 13.2'
 gem 'rspec', '~> 3.13.0'
 gem 'rubocop', '~> 1.69.0'
+gem 'rubocop-rake', '0.6.0', require: false
 gem 'rubocop-rspec', '3.2.0', require: false
diff --git a/2024/ruby/Gemfile.lock b/2024/ruby/Gemfile.lock
index 9779c70..750efed 100644
--- a/2024/ruby/Gemfile.lock
+++ b/2024/ruby/Gemfile.lock
@@ -5,9 +5,34 @@ GEM
     awesome_print (1.9.2)
     coderay (1.1.3)
     diff-lcs (1.5.1)
+    ffi (1.17.0)
+    ffi (1.17.0-arm64-darwin)
+    formatador (1.1.0)
+    guard (2.19.0)
+      formatador (>= 0.2.4)
+      listen (>= 2.7, < 4.0)
+      lumberjack (>= 1.0.12, < 2.0)
+      nenv (~> 0.1)
+      notiffany (~> 0.0)
+      pry (>= 0.13.0)
+      shellany (~> 0.0)
+      thor (>= 0.18.1)
+    guard-compat (1.2.1)
+    guard-rspec (4.7.3)
+      guard (~> 2.1)
+      guard-compat (~> 1.1)
+      rspec (>= 2.99.0, < 4.0)
     json (2.8.2)
     language_server-protocol (3.17.0.3)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    lumberjack (1.2.10)
     method_source (1.1.0)
+    nenv (0.3.0)
+    notiffany (0.1.3)
+      nenv (~> 0.1)
+      shellany (~> 0.0)
     parallel (1.26.3)
     parser (3.3.6.0)
       ast (~> 2.4.1)
@@ -17,6 +42,10 @@ GEM
       method_source (~> 1.0)
     racc (1.8.1)
     rainbow (3.1.1)
+    rake (13.2.1)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
+      ffi (~> 1.0)
     regexp_parser (2.9.3)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
@@ -43,9 +72,13 @@ GEM
       unicode-display_width (>= 2.4.0, < 4.0)
     rubocop-ast (1.36.2)
       parser (>= 3.3.1.0)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
     rubocop-rspec (3.2.0)
       rubocop (~> 1.61)
     ruby-progressbar (1.13.0)
+    shellany (0.0.1)
+    thor (1.3.2)
     unicode-display_width (3.1.2)
       unicode-emoji (~> 4.0, >= 4.0.4)
     unicode-emoji (4.0.4)
@@ -56,9 +89,13 @@ PLATFORMS
 
 DEPENDENCIES
   awesome_print
+  guard
+  guard-rspec
   pry (~> 0.15.0)
+  rake (~> 13.2)
   rspec (~> 3.13.0)
   rubocop (~> 1.69.0)
+  rubocop-rake (= 0.6.0)
   rubocop-rspec (= 3.2.0)
 
 RUBY VERSION
diff --git a/2024/ruby/Guardfile b/2024/ruby/Guardfile
new file mode 100644
index 0000000..5a83809
--- /dev/null
+++ b/2024/ruby/Guardfile
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+# A sample Guardfile
+# More info at https://github.com/guard/guard#readme
+
+## Uncomment and set this to only include directories you want to watch
+# directories %w(app lib config test spec features) \
+#  .select{|d| Dir.exist?(d) ? d : UI.warning("Directory #{d} does not exist")}
+
+## Note: if you are using the `directories` clause above and you are not
+## watching the project directory ('.'), then you will want to move
+## the Guardfile to a watched dir and symlink it back, e.g.
+#
+#  $ mkdir config
+#  $ mv Guardfile config/
+#  $ ln -s config/Guardfile .
+#
+# and, you'll have to watch "config/Guardfile" instead of "Guardfile"
+
+# NOTE: The cmd option is now required due to the increasing number of ways
+#       rspec may be run, below are examples of the most common uses.
+#  * bundler: 'bundle exec rspec'
+#  * bundler binstubs: 'bin/rspec'
+#  * spring: 'bin/rspec' (This will use spring if running and you have
+#                          installed the spring binstubs per the docs)
+#  * zeus: 'zeus rspec' (requires the server to be started separately)
+#  * 'just' rspec: 'rspec'
+
+guard :rspec, cmd: 'bundle exec rspec' do
+  require 'guard/rspec/dsl'
+  dsl = Guard::RSpec::Dsl.new(self)
+
+  # Feel free to open issues for suggestions and improvements
+
+  # RSpec files
+  rspec = dsl.rspec
+  watch(rspec.spec_helper) { rspec.spec_dir }
+  watch(rspec.spec_support) { rspec.spec_dir }
+  watch(rspec.spec_files)
+
+  # Ruby files
+  ruby = dsl.ruby
+  dsl.watch_spec_files_for(ruby.lib_files)
+
+  # Rails files
+  rails = dsl.rails(view_extensions: %w[erb haml slim])
+  dsl.watch_spec_files_for(rails.app_files)
+  dsl.watch_spec_files_for(rails.views)
+
+  watch(rails.controllers) do |m|
+    [
+      rspec.spec.call("routing/#{m[1]}_routing"),
+      rspec.spec.call("controllers/#{m[1]}_controller"),
+      rspec.spec.call("acceptance/#{m[1]}")
+    ]
+  end
+
+  # Rails config changes
+  watch(rails.spec_helper)     { rspec.spec_dir }
+  watch(rails.routes)          { "#{rspec.spec_dir}/routing" }
+  watch(rails.app_controller)  { "#{rspec.spec_dir}/controllers" }
+
+  # Capybara features specs
+  watch(rails.view_dirs)     { |m| rspec.spec.call("features/#{m[1]}") }
+  watch(rails.layouts)       { |m| rspec.spec.call("features/#{m[1]}") }
+
+  # Turnip features and steps
+  watch(%r{^spec/acceptance/(.+)\.feature$})
+  watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$}) do |m|
+    Dir[File.join("**/#{m[1]}.feature")][0] || 'spec/acceptance'
+  end
+end
diff --git a/2024/ruby/Rakefile b/2024/ruby/Rakefile
new file mode 100644
index 0000000..0a25846
--- /dev/null
+++ b/2024/ruby/Rakefile
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'fileutils'
+
+def next_advent_number
+  latest = Dir['./lib/advent*.rb'].map { |p| p.match(/\d{2}/)&.[](0)&.to_i }.compact.max || 0
+  latest + 1
+end
+
+desc 'create class and spec file for DAY'
+task :new do
+  day = ENV['DAY'].nil? ? next_advent_number : ENV['DAY'].to_i
+
+  raise 'invalid DAY' unless day.between?(1, 31)
+
+  formatted_day = day.to_s.rjust(2, '0')
+
+  FileUtils.touch("./lib/advent_#{formatted_day}.rb")
+  FileUtils.touch("./spec/advent_#{formatted_day}_spec.rb")
+  FileUtils.touch("./spec/fixtures/advent-#{formatted_day}.txt")
+  FileUtils.touch("./spec/fixtures/advent-#{formatted_day}-sample.txt")
+end
diff --git a/2024/ruby/lib/advent_02_red_nosed_reports.rb b/2024/ruby/lib/advent_02_red_nosed_reports.rb
index 2a75ed6..b64d901 100644
--- a/2024/ruby/lib/advent_02_red_nosed_reports.rb
+++ b/2024/ruby/lib/advent_02_red_nosed_reports.rb
@@ -26,7 +26,7 @@ def safe_with_dampener?
 
   def safe_levels(direction, levels)
     levels.each_index do |i|
-      next if i == 0
+      next if i.zero?
 
       current = levels[i]
       prev = levels[i - 1]
diff --git a/2024/ruby/lib/advent_03_mull_it_over.rb b/2024/ruby/lib/advent_03_mull_it_over.rb
index e749462..cc0d827 100644
--- a/2024/ruby/lib/advent_03_mull_it_over.rb
+++ b/2024/ruby/lib/advent_03_mull_it_over.rb
@@ -25,7 +25,7 @@ def uncorrupted_pieces
   end
 
   def process_piece(str)
-    splits = str.tr("^0123456789,", "").split(",")
+    splits = str.tr('^0123456789,', '').split(',')
 
     splits[0].to_i * splits[1].to_i
   end
diff --git a/2024/ruby/lib/advent_04_ceres_search.rb b/2024/ruby/lib/advent_04_ceres_search.rb
index ef2ce57..f5e3aa8 100644
--- a/2024/ruby/lib/advent_04_ceres_search.rb
+++ b/2024/ruby/lib/advent_04_ceres_search.rb
@@ -1,7 +1,7 @@
 class WordSearch
   attr_reader :data, :word
 
-  def initialize(data, word = "XMAS")
+  def initialize(data, word = 'XMAS')
     @data = data
     @word = word
   end
@@ -19,14 +19,14 @@ def count_at(row, col)
   end
 
   def letter_at(row, col)
-    in_bounds?(row, col) ? data[row][col] : ""
+    in_bounds?(row, col) ? data[row][col] : ''
   end
 
   def horizontal_word(row, col)
     first = col
     last = col + word.length - 1
 
-    return "" unless in_bounds?(first, last)
+    return '' unless in_bounds?(first, last)
 
     data[row][first..last] * ''
   end
@@ -36,7 +36,7 @@ def horizontal?(row, col)
   end
 
   def vertical_word(row, col)
-    (row..row+word.length-1).map do |pos|
+    (row..row + word.length - 1).map do |pos|
       letter_at(pos, col)
     end * ''
   end
@@ -47,25 +47,25 @@ def vertical?(row, col)
 
   def diagonal_top_left_word(row, col)
     (0..word.length - 1).map do |pos|
-      letter_at(row-pos, col-pos)
+      letter_at(row - pos, col - pos)
     end * ''
   end
 
   def diagonal_top_right_word(row, col)
     (0..word.length - 1).map do |pos|
-      letter_at(row-pos, col+pos)
-    end * ""
+      letter_at(row - pos, col + pos)
+    end * ''
   end
 
   def diagonal_bottom_right_word(row, col)
     (0..word.length - 1).map do |pos|
-      letter_at(row+pos, col+pos)
+      letter_at(row + pos, col + pos)
     end * ''
   end
 
   def diagonal_bottom_left_word(row, col)
     (0..word.length - 1).map do |pos|
-      letter_at(row+pos, col-pos)
+      letter_at(row + pos, col - pos)
     end * ''
   end
 
@@ -74,10 +74,10 @@ def match?(str)
   end
 
   def cross_word_at?(row, col)
-    cross_word = "MAS"
+    cross_word = 'MAS'
 
-    diag_1 = letter_at(row-1, col-1) + letter_at(row, col) + letter_at(row+1, col+1)
-    diag_2 = letter_at(row+1, col-1) + letter_at(row, col) + letter_at(row-1, col+1)
+    diag_1 = letter_at(row - 1, col - 1) + letter_at(row, col) + letter_at(row + 1, col + 1)
+    diag_2 = letter_at(row + 1, col - 1) + letter_at(row, col) + letter_at(row - 1, col + 1)
 
     diag_1_match = [cross_word, cross_word.reverse].any? { |str| str == diag_1 }
     diag_2_match = [cross_word, cross_word.reverse].any? { |str| str == diag_2 }
@@ -122,8 +122,8 @@ def diagonal_count_at(row, col)
       diagonal_top_right_word(row, col),
       diagonal_top_left_word(row, col),
       diagonal_bottom_right_word(row, col),
-      diagonal_bottom_left_word(row, col),
-    ].sum { |str| str == word ? 1 : 0}
+      diagonal_bottom_left_word(row, col)
+    ].sum { |str| str == word ? 1 : 0 }
   end
 
   def diagonal_count
@@ -147,3 +147,9 @@ def render
     end
   end
 end
+
+def badName
+  return unless something
+
+  test
+end
diff --git a/2024/ruby/spec/advent_02_spec.rb b/2024/ruby/spec/advent_02_spec.rb
index 6d9aec7..0947a14 100644
--- a/2024/ruby/spec/advent_02_spec.rb
+++ b/2024/ruby/spec/advent_02_spec.rb
@@ -2,8 +2,8 @@
 require 'pry'
 require 'advent_02_red_nosed_reports'
 
-describe "Report" do
-  context "with safe increasing levels" do
+describe 'Report' do
+  context 'with safe increasing levels' do
     let(:levels) { [5, 6, 7, 8, 9, 10] }
 
     it 'is safe' do
@@ -13,7 +13,7 @@
     end
   end
 
-  context "with safe decreasing levels" do
+  context 'with safe decreasing levels' do
     let(:levels) { [5, 4, 3, 2, 1] }
 
     it 'is safe' do
@@ -23,7 +23,7 @@
     end
   end
 
-  context "with mixed levels" do
+  context 'with mixed levels' do
     let(:levels) { [5, 4, 6] }
 
     it 'is not safe' do
@@ -33,7 +33,7 @@
     end
   end
 
-  context "with bad adjacent levels" do
+  context 'with bad adjacent levels' do
     let(:levels) { [1, 2, 4, 8, 9] }
 
     it 'is not safe' do
@@ -43,40 +43,40 @@
     end
   end
 
-  context "with sample data" do
+  context 'with sample data' do
     let(:data) do
       File.readlines('spec/fixtures/advent-02-sample.txt').map do |e|
         e.chomp.split(' ').map(&:to_i)
       end
     end
 
-    it "calculates how many are safe" do
+    it 'calculates how many are safe' do
       safe = data.select { |levels| Report.new(levels).safe? }
 
       expect(safe.length).to be(2)
     end
 
-    it "calculates how many are safe with a dampener of 1" do
+    it 'calculates how many are safe with a dampener of 1' do
       safe = data.select { |levels| Report.new(levels).safe_with_dampener? }
 
       expect(safe.length).to be(4)
     end
   end
 
-  context "with puzzle data" do
+  context 'with puzzle data' do
     let(:data) do
       File.readlines('spec/fixtures/advent-02.txt').map do |e|
         e.chomp.split(' ').map(&:to_i)
       end
     end
 
-    it "calculates how many are safe" do
+    it 'calculates how many are safe' do
       safe = data.select { |levels| Report.new(levels).safe? }
 
       expect(safe.length).to be(660)
     end
 
-    it "calculates how many are safe with a dampener of 1" do
+    it 'calculates how many are safe with a dampener of 1' do
       safe = data.select { |levels| Report.new(levels).safe_with_dampener? }
 
       expect(safe.length).to be(689)
diff --git a/2024/ruby/spec/advent_03_spec.rb b/2024/ruby/spec/advent_03_spec.rb
index 5554323..710e902 100644
--- a/2024/ruby/spec/advent_03_spec.rb
+++ b/2024/ruby/spec/advent_03_spec.rb
@@ -2,14 +2,14 @@
 require 'pry'
 require 'advent_03_mull_it_over'
 
-describe "Muller" do
-  context "with uncorrupted pieces" do
+describe 'Muller' do
+  context 'with uncorrupted pieces' do
     let(:data) { File.read('./spec/fixtures/advent-03-sample-ii.txt').chomp }
 
     it 'parses uncorrupted pieces' do
       muller = Muller.new(data)
 
-      expect(muller.uncorrupted_pieces).to eq(["mul(2,4)", "mul(8,5)"])
+      expect(muller.uncorrupted_pieces).to eq(['mul(2,4)', 'mul(8,5)'])
     end
 
     it 'mulls uncorrupted data' do
@@ -19,13 +19,13 @@
     end
   end
 
-  context "with sample data" do
+  context 'with sample data' do
     let(:data) { File.read('./spec/fixtures/advent-03-sample.txt').chomp }
 
     it 'parses the pieces' do
       muller = Muller.new(data)
 
-      expect(muller.pieces).to eq(["mul(2,4)", "mul(5,5)", "mul(11,8)", "mul(8,5)"])
+      expect(muller.pieces).to eq(['mul(2,4)', 'mul(5,5)', 'mul(11,8)', 'mul(8,5)'])
     end
 
     it 'mulls the data' do
@@ -35,7 +35,7 @@
     end
   end
 
-  context "with puzzle data" do
+  context 'with puzzle data' do
     let(:data) { File.read('./spec/fixtures/advent-03.txt').chomp }
 
     it 'mulls the data' do
diff --git a/2024/ruby/spec/advent_04_spec.rb b/2024/ruby/spec/advent_04_spec.rb
index d737029..fc222b2 100644
--- a/2024/ruby/spec/advent_04_spec.rb
+++ b/2024/ruby/spec/advent_04_spec.rb
@@ -1,25 +1,25 @@
 require 'spec_helper'
 require 'advent_04_ceres_search'
 
-describe "WordSearch" do
-  it "counts horizontal" do
+describe 'WordSearch' do
+  it 'counts horizontal' do
     data = [
-      ["X", "M", "A", "S"],
-      [".", ".", ".", "."],
-      [".", ".", ".", "."],
-      [".", ".", ".", "."]
+      ['X', 'M', 'A', 'S'],
+      ['.', '.', '.', '.'],
+      ['.', '.', '.', '.'],
+      ['.', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
     expect(search.horizonal_count).to eq(1)
   end
 
-  it "counts horizontal in reverse" do
+  it 'counts horizontal in reverse' do
     data = [
-      ["S", "A", "M", "X"],
-      [".", ".", ".", "."],
-      [".", ".", ".", "."],
-      [".", ".", ".", "."]
+      ['S', 'A', 'M', 'X'],
+      ['.', '.', '.', '.'],
+      ['.', '.', '.', '.'],
+      ['.', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
@@ -27,12 +27,12 @@
     expect(search.horizonal_count).to eq(1)
   end
 
-  it "counts vertical" do
+  it 'counts vertical' do
     data = [
-      ["X", ".", ".", "."],
-      ["M", ".", ".", "."],
-      ["A", ".", ".", "."],
-      ["S", ".", ".", "."]
+      ['X', '.', '.', '.'],
+      ['M', '.', '.', '.'],
+      ['A', '.', '.', '.'],
+      ['S', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
@@ -40,12 +40,12 @@
     expect(search.vertical_count).to eq(1)
   end
 
-  it "counts vertical in reverse" do
+  it 'counts vertical in reverse' do
     data = [
-      ["S", ".", ".", "."],
-      ["A", ".", ".", "."],
-      ["M", ".", ".", "."],
-      ["X", ".", ".", "."]
+      ['S', '.', '.', '.'],
+      ['A', '.', '.', '.'],
+      ['M', '.', '.', '.'],
+      ['X', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
@@ -53,12 +53,12 @@
     expect(search.vertical_count).to eq(1)
   end
 
-  it "counts downward diagonal" do
+  it 'counts downward diagonal' do
     data = [
-      ["X", ".", ".", "."],
-      [".", "M", ".", "."],
-      [".", ".", "A", "."],
-      [".", ".", ".", "S"]
+      ['X', '.', '.', '.'],
+      ['.', 'M', '.', '.'],
+      ['.', '.', 'A', '.'],
+      ['.', '.', '.', 'S']
     ]
 
     search = WordSearch.new(data)
@@ -66,12 +66,12 @@
     expect(search.diagonal_count).to eq(1)
   end
 
-  it "counts downward reverse diagonal" do
+  it 'counts downward reverse diagonal' do
     data = [
-      ["S", ".", ".", "."],
-      [".", "A", ".", "."],
-      [".", ".", "M", "."],
-      [".", ".", ".", "X"]
+      ['S', '.', '.', '.'],
+      ['.', 'A', '.', '.'],
+      ['.', '.', 'M', '.'],
+      ['.', '.', '.', 'X']
     ]
 
     search = WordSearch.new(data)
@@ -79,12 +79,12 @@
     expect(search.diagonal_count).to eq(1)
   end
 
-  it "counts upward diagonal" do
+  it 'counts upward diagonal' do
     data = [
-      [".", ".", ".", "S"],
-      [".", ".", "A", "."],
-      [".", "M", ".", "."],
-      ["X", ".", ".", "."]
+      ['.', '.', '.', 'S'],
+      ['.', '.', 'A', '.'],
+      ['.', 'M', '.', '.'],
+      ['X', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
@@ -92,12 +92,12 @@
     expect(search.diagonal_count).to eq(1)
   end
 
-  it "counts upward reverse diagonal" do
+  it 'counts upward reverse diagonal' do
     data = [
-      [".", ".", ".", "X"],
-      [".", ".", "M", "."],
-      [".", "A", ".", "."],
-      ["S", ".", ".", "."]
+      ['.', '.', '.', 'X'],
+      ['.', '.', 'M', '.'],
+      ['.', 'A', '.', '.'],
+      ['S', '.', '.', '.']
     ]
 
     search = WordSearch.new(data)
@@ -105,12 +105,12 @@
     expect(search.diagonal_count).to eq(1)
   end
 
-  it "counts crossing diagonals" do
+  it 'counts crossing diagonals' do
     data = [
-      ["X", ".", ".", "S"],
-      [".", "M", "A", "."],
-      [".", "M", "A", "."],
-      ["X", ".", ".", "S"]
+      ['X', '.', '.', 'S'],
+      ['.', 'M', 'A', '.'],
+      ['.', 'M', 'A', '.'],
+      ['X', '.', '.', 'S']
     ]
 
     search = WordSearch.new(data)
@@ -118,12 +118,12 @@
     expect(search.diagonal_count).to eq(2)
   end
 
-  it "counts cross diagonals" do
+  it 'counts cross diagonals' do
     data = [
-      ["S", ".", ".", "S"],
-      [".", "A", "A", "."],
-      [".", "M", "M", "."],
-      ["X", ".", ".", "X"]
+      ['S', '.', '.', 'S'],
+      ['.', 'A', 'A', '.'],
+      ['.', 'M', 'M', '.'],
+      ['X', '.', '.', 'X']
     ]
 
     search = WordSearch.new(data)
@@ -131,13 +131,13 @@
     expect(search.diagonal_count).to eq(2)
   end
 
-  it "finds no matches" do
+  it 'finds no matches' do
     data = [
-      ["X", "X", "X", "X"],
-      ["X", "X", "X", "M"],
-      ["X", "X", "X", "X"],
-      ["A", "X", "X", "X"],
-      ["X", "S", "X", "X"],
+      %w[X X X X],
+      %w[X X X M],
+      %w[X X X X],
+      %w[A X X X],
+      %w[X S X X]
     ]
 
     search = WordSearch.new(data)
@@ -145,65 +145,65 @@
     expect(search.diagonal_count).to eq(0)
   end
 
-  it "counts diagonals" do
-    data =[
-      [".", "S", ".", ".", ".", ".", ".", "S", ".", "."],
-      [".", ".", "A", ".", ".", ".", "A", ".", ".", "."],
-      [".", ".", ".", "M", ".", "M", ".", ".", ".", "."],
-      [".", ".", ".", ".", "X", ".", ".", ".", ".", "."],
-      [".", ".", ".", "M", ".", "M", ".", ".", ".", "."],
-      [".", ".", "A", ".", ".", ".", "A", ".", ".", "."],
-      [".", "S", ".", ".", ".", ".", ".", "S", ".", "."],
+  it 'counts diagonals' do
+    data = [
+      ['.', 'S', '.', '.', '.', '.', '.', 'S', '.', '.'],
+      ['.', '.', 'A', '.', '.', '.', 'A', '.', '.', '.'],
+      ['.', '.', '.', 'M', '.', 'M', '.', '.', '.', '.'],
+      ['.', '.', '.', '.', 'X', '.', '.', '.', '.', '.'],
+      ['.', '.', '.', 'M', '.', 'M', '.', '.', '.', '.'],
+      ['.', '.', 'A', '.', '.', '.', 'A', '.', '.', '.'],
+      ['.', 'S', '.', '.', '.', '.', '.', 'S', '.', '.']
     ]
 
     search = WordSearch.new(data)
 
-    expect(search.diagonal_top_left_word(3, 4)).to eq("XMAS")
-    expect(search.diagonal_top_right_word(3, 4)).to eq("XMAS")
-    expect(search.diagonal_bottom_right_word(3, 4)).to eq("XMAS")
-    expect(search.diagonal_bottom_left_word(3, 4)).to eq("XMAS")
+    expect(search.diagonal_top_left_word(3, 4)).to eq('XMAS')
+    expect(search.diagonal_top_right_word(3, 4)).to eq('XMAS')
+    expect(search.diagonal_bottom_right_word(3, 4)).to eq('XMAS')
+    expect(search.diagonal_bottom_left_word(3, 4)).to eq('XMAS')
 
     expect(search.diagonal_count).to eq(4)
     expect(search.word_count).to eq(4)
   end
 
-  it "counts cross words" do
+  it 'counts cross words' do
     data = [
-        ["M", ".", "S"],
-        [".", "A", "."],
-        ["M", ".", "S"],
-      ]
+      ['M', '.', 'S'],
+      ['.', 'A', '.'],
+      ['M', '.', 'S']
+    ]
 
     search = WordSearch.new(data)
 
-    expect(search.cross_word_at?(1,1)).to eq(true)
+    expect(search.cross_word_at?(1, 1)).to be(true)
     expect(search.cross_word_count).to eq(1)
   end
 
-  context "with sample data" do
+  context 'with sample data' do
     let(:data) do
       File.readlines('./spec/fixtures/advent-04-sample.txt').map { |l| l.chomp.chars }
     end
 
-    it "finds counts of XMAS" do
+    it 'finds counts of XMAS' do
       search = WordSearch.new(data)
 
       expect(search.word_count).to eq(18)
     end
   end
 
-  context "with puzzle data" do
+  context 'with puzzle data' do
     let(:data) do
       File.readlines('./spec/fixtures/advent-04.txt').map { |l| l.chomp.chars }
     end
 
-    it "finds counts of XMAS" do
+    it 'finds counts of XMAS' do
       search = WordSearch.new(data)
 
       expect(search.word_count).to eq(2447)
     end
 
-    it "finds cross word counts" do
+    it 'finds cross word counts' do
       search = WordSearch.new(data)
 
       expect(search.cross_word_count).to eq(1868)