Tag Archives: X-panel

Hodoku Grouped AIC I


This post uses two grouped AIC ANL from Hodoku to illustrate how such chains are inspired and constructed. After the first, readers are challenged to try this approach on the following examples, with checkpoint to follow. I was prepared to … Continue reading

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A Little More Extreme


Here is a follow up on the advanced level More Extreme 4, with background looks at the bv map, XYZ map, and X-panel . There is a challenge to find a forcing chain XYZ alongside a regular one. Entering the … Continue reading

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Stephens in the Library with a Laptop


This post continues with differences between sysudoku advanced solving and the Paul Stephens “extreme” order of battle.  In particular, the power of full Medusa coloring compared to Stephens’ limited multi-colouring. Let’s begin with a checkpoint for solve-along sysudokie readers.  In … Continue reading

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What Regular Fish to Fish For


Come let us reason together about regular fishing, i.e. finding X-wings, swordfish, or jellyfish on an X-panel .  We look at sets of lines in one direction, then the other.  Rows and columns.  We seek a set of n lines … Continue reading

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Slink Loops


A “slinks only” X-loop of an even number of slinks consists of alternating true and false candidates.  That we know by the logic of slinks.  We just don’t know if it’s the arbitrary one we pick, or the next one, … Continue reading

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The X-Panel and X-Chains


We will now be leaving methods relying on the bv map as the primary visual aid. With puzzles that survive these methods,   we need to remember that the bv map file remains an important resource.  With every clue or candidate … Continue reading

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