Monkeymore Sudoku

Locked Candidates

المستوى 3 · Yellow Belt

المتطلب السابق: Locked Candidates

Overview

Locked Candidates occurs when candidates in a block are restricted to a single row or column. This allows elimination of that candidate from the rest of that row or column outside the block.

How It Works

  1. Type 1 (Pointing): When a candidate in a block exists only in one row/column, eliminate it from that row/column outside the block.
  2. Type 2 (Claiming): When a candidate in a row/column exists only within one block, eliminate it from other cells in that block.

Example

Check digit 2 in row 3.

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Tips & Patterns

  • Scan each block looking for candidates aligned in a single row or column.
  • This technique is very common and should be checked regularly.
  • Locked Candidates often unlock more complex patterns.