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Configuration #50

RSST-R-0050-COMP-1976discharging rule R2

ring size 10

vertices 14 · edges 28

Free completion

edge 0–1edge 0–9edge 0–10edge 0–11edge 0–12edge 0–13edge 1–2edge 1–10edge 1–11edge 1–12edge 1–13edge 2–3edge 2–10edge 2–12edge 2–13edge 3–4edge 3–12edge 3–13edge 4–5edge 5–6edge 6–7edge 7–8edge 8–9edge 9–10edge 9–11edge 10–11edge 10–12edge 10–13vertex 0 · deg 6 · B·ochre · ringvertex 1 · deg 6 · C·viridian · ringvertex 2 · deg 5 · B·ochre · ringvertex 3 · deg 4 · A·vermilion · ringvertex 4 · deg 2 · B·ochre · ringvertex 5 · deg 2 · A·vermilion · ringvertex 6 · deg 2 · B·ochre · ringvertex 7 · deg 2 · A·vermilion · ringvertex 8 · deg 2 · B·ochre · ringvertex 9 · deg 4 · C·viridian · ringvertex 10 · deg 7 · A·vermilionvertex 11 · deg 4 · D·indigovertex 12 · deg 5 · D·indigovertex 13 · deg 5 · D·indigo
100%

Outer cycle (bold ring) is the configuration's boundary; interior vertices form the reducible piece. A configuration is D-reducible when every 4-coloring of its ring either extends to the interior or can be Kempe-modified into one that does.