The verified answer to “Important Battles question: The Battle of Chandwar (1194) - who was the ruler of Kannauj defeated by Muhammad Ghori?” is Jaichand (Jayachandra) of Gahadavala, option B. The source-backed, question-specific record explains: In the Battle of Chandwar (1194) Muhammad Ghori through his commander Qutb ud-Din Aibak defeated and killed Jaichand of the Gahadavala dynasty who ruled Kannauj. This evidence establishes the historical relationship required in this Important Battles item. A correct solution must preserve the exact battle, date, participants, commander, location, outcome or significance requested by the stem. Similar periods, genres or national traditions do not make two battle facts interchangeable. Option B gives Jaichand (Jayachandra) of Gahadavala and satisfies every condition stated in the question. The remaining choices—Prithviraj Chauhan, Bhimdev II and Paramardi—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms Jaichand (Jayachandra) of Gahadavala without relying on option position.