本ほん戦せん

• 予よ選せんN1

  予選 is the preliminary qualifying round, while 本選 is the main event or final stage that follows it.

• 前ぜん哨しょう戦せん

  前哨戦 refers to a warm-up or preliminary match, whereas 本戦 is the main tournament or contest itself.

• 本ほん戦せんUsage64%

  Standard kanji form for the main tournament or final rounds.

• 本ほん選せんUsage36%

  Alternate kanji form; 本戦 is more common.

Compound of 本 (main, real) and 戦 (battle, match). The alternate form 本選 uses 選 (selection).