Sudoku How-To Training -- Sudoku Video Index

This page has a list of sudoku training videos cross-referenced with the techniques found in each video. More videos are added all the time.

Click on the video number to go to that video.

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Video #	Technique(s)
205	Three sets of twins/triplets Wall pattern Double wall pattern
204	Quintuplets Twins Triplets
203	Double row/column elimination Sudoku X-wings Compare/contrast these two techniques
202	Unique rectangles (ambiguity rule) Twins Triplets Right angle pattern
201	Right angle pattern (new) L pattern Diagonal pattern Ghost numbers Twins, triplets Identical twins Unique rectangles (URs)
200	Eight sets of twins Triplets Offset pattern Diagonal pattern Ghost numbers
199	Triplets Double column elimination Ghost numbers Corner pattern
198	Twins Ghost numbers Unique rectangles Double column elimination Gate pattern Corner pattern T pattern
197	Double row/column elimination Twins Triplets
196	Diagonal pattern Twins Hidden corner pattern
195	Twins
194	Sudoku history Magic square Latin square Howard Garns Leonhard Euler Wayne Gould
193	Ambiguity rule Double row/column elimination Ghost numbers Twins Triplets T pattern Corner pattern
192	Answer sheet to pop quiz video 191
191	Pop quiz
190	Opposite pattern
189	Ghost numbers double row/column elimination Twins Triplets
188	Wall pattern Hidden T pattern Twins Triplets Ghost numbers
187	Quadruplets Twins triplets Ghost numbers Ambiguity rule (Unique Rectangles) Double row/column elimination
186	Double row/column elimination Twins Ghost numbers Ambiguity rule (Unique Rectangles)
185	Row/box relationships Ghost numbers Twins Unique rectangles Row/column completion
184	identical twins Row/column completion Plus pattern Solving sections
183	Four techniques find one number Twins Double row elimination Quadruplets
182	Identical twins Ambiguity rule (unique rectangles)
181	Diagonal pattern Hidden patterns Corner pattern Gate pattern Double row elimination Double column elimination Ambiguity rule Row & column completion

Video #	Technique(s)
180	Will Shortz "Very Challenging" puzzle
179	Lots of twins Learn a lot about twins in this video
178	A "beautiful puzzle" Double wall pattern Twins Triplets Double row elimination Row/column completion Ambiguity rule (Unique Rectangles)
177	Twins Triplets Double column elimination T pattern Hidden patterns Ghost numbers Ambiguity rule (Unique rectangles) Solving rows Solving columns
176	Solving sections Double row elimination Wall pattern Ghost numbers Triplets
175	Ghost numbers Double row elimination Ambiguity rule Sudoku twins
174	Medium puzzle Getting started with sudoku Sudoku rules Sudoku basics Basic techniques
173	Opposite pattern Corner pattern Plus pattern Hidden patterns Twins Triplets Ghost numbers Unique rectangles (Ambiguity rule)
172	Four tricks used at the same time to solve 1 number Twins Triplets Ambiguity Rule (Unique Rectangles) Ghost Numbers Double Column Elimination
171	Twins Ghost numbers T pattern Gate pattern Corner pattern
170	Double row elimination Twins Triplets Ghost numbers Solving sections Solving rows Solving columns Solving boxes
169	Twins Sudoku unique rectangles (ambiguity rule) Ghost numbers Double column elimination
168	Double row & column elimination Ghost numbers Twins Row & column completion Ambiguity rule (sudoku unique rectangles)
167	Ghost numbers Twins Row & column completion Double row & column elimination Ambiguity rule (Unique rectangles T pattern
166	Patterns Hidden patterns Advanced techniques
165	Opposite pattern Plus pattern Corner pattern Double row & column elimination
164	Answer sheet for pop quiz in previous video (video 163)
163	Sudoku pop quiz Unique rectangles (ambiguity rule)
162	Ghost numbers and how to find other numbers using them
161	Hidden triplets

Video #	Technique(s)
160	Plus pattern Unique rectangles (ambiguity rule) Twins, triplets
159	Incredible power of twins Unique rectangles Loner cells Identical twins
158	Answer sheet to pop quiz Ambiguity rule (sudoku unique rectangles) Sudoku twins, triplets Sudoku row & column completion Solving sections
157	Pop quiz Ambiguity rule (sudoku unique rectangles) Sudoku twins, triplets Sudoku row & column completion Solving sections
156	Sudoku unique rectangles Sudoku twins Double row & column elimination Sudoku solving sections
155	Sudoku trial & error technique
154	T pattern
153	Answer sheet for pop quiz in video #152
152	Pop quiz -- see if you know each number as they are filled in
151	Patterns
150	Diagonal pattern Corner pattern
149	Ghost numbers Twins Triplets Loner cells Identical twins
148	Diagonal sudoku A sudoku variant
147	Forget patterns! Part 2 Looking for numbers without looking at patterns Medium puzzle
146	Subscriber requested puzzle
145	Forget patterns! Part 1 Looking for numbers without looking at patterns Diabolical puzzle
144	Pattern: The Corner pattern Hard puzzle
143	Answer sheet to video 142 Difficult puzzle
142	Pop-quiz Difficult puzzle
141	Pattern: The L pattern Hard puzzle

Video #	Technique(s)
140	Pattern: The Gate pattern Hard puzzle
139	Short video Ambiguity rule (unique rectangles) Hard puzzle
138	Subscriber request Hard puzzle
137	Subscriber request Diabolical puzzle
136	Pseudo-quiz Diabolical puzzle
135	Watch for subtle clues Diabolical puzzle Twins, triplets Ambiguity rule Double row/column elimination
134	Answer sheet to video 133 Diabolical puzzle
133	Pop-quiz Diabolical puzzle
132	Answer sheet to video 131 Hard puzzle Quadruplets
131	Pop-quiz Hard puzzle
130	4x4 sudoku Sudoku for kids
129	Sudoku variant Diagonal sudoku
128	Answer sheet to video 118
127	Pop-quiz Medium puzzle
126	Diabolical puzzle What-if technique
125	Diabolical puzzle Twins Identical Twins
124	Hard puzzle Double row elimination Double column elimination
123	1-9 sudoku -or- Between 1 & 9 sudoku
122	Puzzle by Nikoli Publishing Expert/Difficult
121	Charles Timmerman Hard puzzle

Video #	Technique(s)
120	Killer sudoku (Latin square)
119	Answer sheet to video 118
118	Pop Quiz Diabolical puzzle
117	Subscriber request Diabolical puzzle Ambiguity rule (Unique rectangles)
116	Diabolical puzzle Hidden patterns
115	Hard puzzle Twins & Triplets Quick scanning for numbers
114	Hard puzzle Ambiguity rule (Unique Rectangles)
113	Hard puzzle Unidentified twins
112	Answer sheet for video 111 Expert puzzle
111	Pop-quiz Expert puzzle
110	Another way to use twins Diabolical puzzle
109	Subscriber request Expert puzzle
108	Creatively using twins
107	Answer sheet for video 106 medium puzzle
106	Pop-quiz medium puzzle
105	Subscriber requested Tips for solving an easy puzzle
104	Solving tips for hard puzzle Diagonal pattern
103	Answer sheet to video 101
102	Subscriber request Using combinations of tricks to solve
101	Pop-quiz

Video #	Technique(s)
100	Triplets Wall pattern T pattern
99	Wordoku (sudoku with letters instead of numbers)
98	Proof that sudoku doesn't require math to solve Wordoku (sudoku with letters instead of numbers)
97	Ambiguity rule (Unique Rectangles) Twins/triplets Ghost numbers corner sidewalk pattern
96	Answer sheet for video #95 Quadruplets example
95	Pop-quiz solving a hard puzzle
94	The "Plus" pattern
93	Thought processes solving a puzzle
92	diabolical puzzle - answer sheet to previous pop-quiz
91	diabolical puzzle - pop-quiz
90	Answer sheet for SudokuPrimer video 89
89	pop-quiz solving a hard puzzle See next video for answer sheet
88	pop-quiz solving a medium puzzle
87	Offset pattern row/column completion
86	Pseudo-quiz twins ghost numbers double-row elimination
85	Extreme diabolical puzzle solved Daily Telegraph 5/18/2018 What-if strategy
84	'Answer sheet' to pop-quiz in SudokuPrimer 83 video
83	Hard puzzle Pop-quiz
82	Diabolical puzzle Pop-quiz Quadruplets
81	In-depth look at L patterns

Video #	Technique(s)
80	Ambiguity rule
79	Subscriber request "Hardest sudoku we've seen in a newspaper" Daily Telegraph puzzle 27 April 2018
78	In-depth look at loner cells Twins, triplets Solving sections
77	Subscriber request Loner cells Twins, triplets Offset pattern
76	Pop-quiz
75	L pattern
74	Twins Triplets
73	The "wall guarantee"
72	Speed-scanning Twins Triplets
71	Medium puzzle Sudoku terminology - cells, rows, columns, boxes, sections, containers Ghost numbers Twins
70	Easy puzzle Basic strategies Row, column, box completion Solving sections
69	Diabolical puzzle Pseudo-quiz
68	Hard puzzle Pop-quiz
67	Diabolical puzzle Pop-quiz
66	Diabolical puzzle Plus pattern Solving sections
65	Hard puzzle Wall pattern
64	Medium puzzle - Sudoku To Go vol 103 Row, Column, Box completion Corner sidewalk pattern
63	Easy puzzle - Sudoku To Go vol 103 Row, Column, Box completion Diagonal pattern Plus pattern
62	Tricks to make a hard puzzle easy Using twins & Triplets to get a good start
61	Pop-quiz See if you can follow along

Video #	Technique(s)
60	Extreme diabolical puzzle solved Daily Telegraph 9/22/2018 Trial & Error
59	Rotten to the core I fill in numbers, you discover why
58	Pseudo-quiz Solving a hard puzzle L pattern, wall pattern
57	Using harder tricks in a medium puzzle Ambiguity rule X pattern
56	Finding twins two things you can do with twins
55	easy puzzle solving single cells row, column, square completion
54	pop-quiz solving a medium puzzle harder techniques are used to solve this medium puzzle
53	using advanced tricks to solve an easy puzzle
52	some twins, but mostly "chipping away" at a hard puzzle using simpler techniques
51	easy puzzle Pop-quiz see if you know why numbers go where they go
50	Pseudo-quiz hard puzzle - why does that number go there?
49	Pseudo-quiz diabolical puzzle - why does that number go there?
48	Pseudo-quiz medium puzzle - why does that number go there?
47	diabolical puzzle - Sudoku to Go volume 102
46	hard puzzle - Sudoku to Go volume 102
45	medium puzzle - Sudoku to Go volume 102
44	easy puzzle - Sudoku to Go volume 102
43	wall pattern corner sidewalk pattern hidden patterns
42	offset pattern corner sidewalk pattern
41	hard puzzle pop quiz see if you know why numbers go where they go

Video #	Technique(s)
40	medium puzzle pop quiz see if you know why numbers go where they go
39	finding sets (twins, triplets, etc.) quickly
38	Harold Nolte, video creator introduction
37	conversely - looking at opposites
36	twins triplets
35	diabolical puzzle - Sudoku to Go volume 101
34	hard puzzle - Sudoku to Go volume 101
33	medium puzzle - Sudoku to Go volume 101
32	easy puzzle - Sudoku to Go volume 101
31	gate patterns wall patterns offset patterns
30	loner cells identical twins
29	containers defined container examples
28	twins, triplets, quadruplets up to nonuplets
27	twins twins twins
26	quadruplets individual cells
25	diabolical puzzle - Sudoku to Go volume 100
24	hard puzzle - Sudoku to Go volume 100
23	medium puzzle - Sudoku to Go volume 100
22	easy puzzle - Sudoku to Go volume 100
21	combinations of techniques to solve a diabolical puzzle

Video #	Technique(s)
20	'T' pattern finding twins and triplets quickly
19	hard puzzle - Sudoku to Go volume 99
18	diabolical puzzle - Sudoku to Go volume 99
17	medium puzzle - Sudoku to Go volume 99
16	easy puzzle - Sudoku to Go volume 99
15	diabolical puzzle - Sudoku to Go volume 98
14	medium puzzle - Sudoku to Go volume 98
13	easy puzzle - Sudoku to Go volume 98
12	hard puzzle - Sudoku to Go volume 98
11	Sudoku to Go magazines
10	solving an entire diabolical puzzle
9	solving columns using twins
8	twins, triplets number/container relationships
7	ghost numbers
6	loner cells identical twins
5	double row/col elimination
4	finding numbers after twins/triplets
3	finding numbers after twins
2	loner cells identical twins
1	row completion finding twins
0	Introduction to sudoku Sudoku terminology Basic sudoku rules How to solve an easy puzzle

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