{"id":661,"date":"2025-12-18T15:35:06","date_gmt":"2025-12-18T02:35:06","guid":{"rendered":"https:\/\/thesudoku.com\/blog\/?page_id=661"},"modified":"2026-08-20T16:49:27","modified_gmt":"2026-08-20T04:49:27","slug":"x-loop","status":"publish","type":"page","link":"https:\/\/thesudoku.com\/blog\/x-loop\/","title":{"rendered":"X-Loop"},"content":{"rendered":"\n
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< <\/a>Back<\/a><\/p>\n<\/div>\n\n\n\n

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How to Master the X-Cycle (Loop) Strategy in Sudoku<\/strong><\/h1>\n\n\n\n

When isolated patterns like X-Wing<\/em> or 2-String Kite<\/em> aren’t enough to solve an Expert or Master grid, it is time to connect multiple links across the entire board. The X-Cycle strategy<\/strong> (often called a Continuous Loop<\/strong>) is a powerful single-digit chaining technique that tracks a single candidate through an unbroken ring of logic.<\/p>\n\n\n\n

The Core Building Blocks: Strong vs. Weak Links<\/strong><\/h2>\n\n\n\n

In this strategy, we build loops by alternately chaining weak links and strong links for a single candidate across rows, columns, and 3×3 blocks.<\/p>\n\n\n\n

\"Weak<\/figure>\n\n\n\n

1. Strong Link ( Conjugate Pair )<\/h3>\n\n\n\n