一着不慎，满盘皆输

一著不慎，滿盤皆輸
yīzhāobùshèn,mǎnpánjiēshū
One careless move and the whole game is lost. (idiom)

CEDICT

Entry Composition

1 一着 yīzhāo
  1. (by extension) a move; a step
  2. a device; a stratagem
  3. a move in chess
  4. a move; a step
  5. a movement in the martial arts (wushu)
2 不慎 bùshèn
  1. incautious
  2. inattentive
3 满盘皆输 mǎnpánjiēshū see 一著不慎，一着不慎，满盘皆输 yīzhāobùshèn,mǎnpánjiēshū