{"as_of":"2026-08-08T02:50:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:c6cfb93c8b50b3c03db9f1fcd9697315294cfb60746ae61603d80cdeb2f6fc2f","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-07T06:34:17.273281+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-06T15:03:06.344284Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"pith","source_observed_at":"2026-08-06T15:03:06.454842Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1403.7373","last_updated":"2014-03-28T13:43:50Z","snapshot_observed_at":"2026-07-06T03:39:42.982226Z","submitted_at":"2014-03-28T13:43:50Z","title":"Difficulty Rating of Sudoku Puzzles: An Overview and Evaluation","version":1},"cited_work":{"arxiv_id":"1403.7373","doi":null,"metadata_source":"pith","pith_arxiv_id":"1403.7373","snapshot_observed_at":"2026-08-06T15:03:06.454842Z","title":"Difficulty Rating of Sudoku Puzzles: An Overview and Evaluation","venue":"cs.AI","work_id":"d66f0fa5-496e-41d3-8262-596206d2a272","year":2014},"citing_paper":{"arxiv_id":"2507.21137","last_updated":"2025-07-22T22:32:30Z","snapshot_observed_at":"2026-08-07T10:31:44.558712Z","submitted_at":"2025-07-22T22:32:30Z","title":"Project Patti: Why can You Solve Diabolical Puzzles on one Sudoku Website but not Easy Puzzles on another Sudoku Website?","version":1},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-06T15:03:06.344284Z"},"links":{"cited_paper":"/paper/1403.7373","citing_paper":"/paper/2507.21137"},"observation_digest":"sha256:7eb18f16ac641f48df0d0510e1037be72eeaa7d8596f1fe2e5c8886b027663fa","observation_id":"b73b4272-902d-49aa-a716-2bc31aa5c56f","resolution":{"observed_at":"2026-08-06T15:03:06.461741Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1403.7373/citation-record","integrity":"/paper/1403.7373/integrity","json":"/paper/1403.7373/citation-record.json","paper":"/paper/1403.7373"},"outbound":[],"paper":{"arxiv_id":"1403.7373","last_updated":"2014-03-28T13:43:50Z","latest_version":1,"primary_category":"cs.AI","snapshot_observed_at":"2026-07-06T03:39:42.982226Z","submitted_at":"2014-03-28T13:43:50Z","title":"Difficulty Rating of Sudoku Puzzles: An Overview and Evaluation"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"thesis":"As of 8 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1403.7373."}