board · tray

1. Origins, structure, and basic meaning

• Structure: 盤 has 15 strokes and concerns boards or trays and can also appear in words for stages of progress.
• Basic usage: 碁盤 is read ごばん, and 中盤 is read ちゅうばん.

2. Common pitfalls and similar expressions

• A physical board and a stage
  • 碁盤の上に黒い石を置いた means placed a black stone on the Go board.
  • 物語の中盤 means the middle part of a story. 中盤 is a stage of progress, not necessarily one exact midpoint.