No reviewed descendants currently reuse this node. Absence describes the graph, not the entire history of the form.
03
TRANSITIVE DESCENDANT CLOSURE
EVERY REVIEWED BRANCH FROM HERE
0
This is the complete downstream closure currently supported by the canonical graph. Every displayed step is a real reviewed edge with its own sound claim, meaning claim, scholar, confidence, and citations.
UNIQUE DESCENDANT NODES
0
REVIEWED EDGES
0
DEEPEST PATH
0
MODERN DOSSIERS REACHED
0
No downstream edge has cleared review for this node. This is a graph-coverage statement, not a claim that the historical form produced nothing.
“Every” means every descendant in the reviewed SET-U graph. It does not convert missing scholarship or missing ingestion into a claim of historical completeness. The coverage ledger remains the honest denominator.
04
RECORDED EVIDENCE
ATTESTATIONS / FIRST KNOWN USE
1
SOURCE-REPORTEDlexicographic first useestablished
English lexicographic first-use report for checkmate
Source-reported first-use century; no underlying manuscript witness was directly inspected.