Sudoku Primer 248 - Persevering Through a Tough Puzzle
Sudoku Primer 246 - The Hard-to-Spot Opposite Pattern
These PROVEN Strategies Can Solve Hard Sudoku – SHC 248
Sudoku Primer 249 - Tough Subscriber Request Puzzle
Sudoku Primer 247 - Finding and Using the Offset Pattern
Sudoku Primer 326 - Answer Sheet to the Pop Quiz
Sudoku Primer 244 - Subscriber Request
Sudoku Primer 288 - Solving Puzzles Using Complementary Thinking
Sudoku Primer 226 - Sudoku That Flows Nicely
Sudoku Primer 245 - A Wayne Gould Puzzle with Lots of Quadruplets
Sudoku Primer 225 - Three Techniques Together to Find a Hard Number
Sudoku Primer 253 - Solving an Expert Puzzle From a 'New' Publisher
Sudoku Primer 257 - Another Expert Puzzle from Papp Publishing
Sudoku Primer 315 - Twins in Containers - and How to Spot Them
Sudoku Primer 272 - Finding Next Number With Triplets & Double Row Elimination
Sudoku Primer 260 - Creative Ways to Solve a Kappa Puzzle
Sudoku Primer 252 - Hard Sudoku - Subscriber Puzzle
Sudoku Primer 243 - Triplets Save the Day
Sudoku Primer 242 - Unraveling a New York Times Hard Sudoku Puzzle
Sudoku Primer 230 - Subscriber Request - A Blast From the Past!
