Sudoku Luna
ExpertChains and uniqueness

Practise: Multi-Coloring

Find two separate marked 8 chains. Which outside note sees the forced opposite side of both chains?

This direct drill starts on two verified strong-link components. Keep the components separate, locate their equal-side conflict, then remove only the outside note that sees both forced opposite sides.

Example 1 of 4

Practice
Mistakes0Hints0Score3,500Time0:00

Your turn first

Your turn first

For 8, find the two separate strong-link components. Which prepared outside note sees an opposite-side cell from both?

Remember

Multi-Coloring compares two separate conjugate-pair components for one digit. An equal-side conflict forces their opposite sides, so any note seeing one opposite side from each component can be removed.

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