TetraChroma Lab
Back to gallery

Configuration #52

RSST-R-0052-COQ-2005discharging rule R4a

ring size 12

vertices 17 · edges 27

Free completion

edge 0–1edge 0–11edge 0–13edge 0–14edge 1–2edge 2–3edge 2–12edge 2–15edge 3–4edge 3–12edge 3–15edge 3–16edge 4–5edge 4–15edge 4–16edge 5–6edge 6–7edge 7–8edge 8–9edge 9–10edge 10–11edge 11–13edge 11–14edge 12–13edge 12–14edge 12–15edge 13–16vertex 0 · deg 4 · B·ochre · ringvertex 1 · deg 2 · A·vermilion · ringvertex 2 · deg 4 · C·viridian · ringvertex 3 · deg 5 · A·vermilion · ringvertex 4 · deg 4 · 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 2 · A·vermilion · ringvertex 10 · deg 2 · B·ochre · ringvertex 11 · deg 4 · C·viridian · ringvertex 12 · deg 5 · B·ochrevertex 13 · deg 4 · A·vermilionvertex 14 · deg 3 · A·vermilionvertex 15 · deg 4 · D·indigovertex 16 · deg 3 · C·viridian
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.