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SUDOKU TRAINING CENTER

Master Advanced Solving Techniques

OVERALL PROGRESS
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Elimination Techniques
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Pattern Recognition
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Advanced Techniques
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Expert Techniques
Elimination Techniques
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Naked SinglesBASIC
Find cells with only one possible number
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Hidden SinglesBASIC
Find numbers that can only go in one cell
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Pattern Recognition
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Naked PairsINTERMEDIATE
Find two cells with the same two candidates
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Hidden PairsINTERMEDIATE
Find two numbers that can only go in two cells
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Advanced Techniques
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X-WingsADVANCED
Advanced elimination using row-column patterns
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SwordfishADVANCED
Extended X-Wing pattern across three rows/columns
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Expert Techniques
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XY-ChainsEXPERT
Chain of cells with alternating candidates
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Simple ColoringEXPERT
Color cells to find eliminations
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XY-WingADVANCED
Three-cell pattern with pivot and wings
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Multi-ColoringEXPERT
Advanced coloring with multiple candidates
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Forcing ChainEXPERT
Explore consequences of candidate placement
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