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板六

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板六(黑棋部分)。當白棋下A位時,黑棋下B位,左右必得其一;同理,當白棋下B位時,黑棋下A位即可活棋。

板六圍棋術語,是死活中的基本活形。因棋形有六個空,並呈現板面狀而得名。

可能的缺陷

但並非所有時候的板六都是活形。如果板六在棋形存有缺陷,而成為斷頭板六,則有吃棋的手段。

白下1位破眼,黑下2位看似合理,但此時左右不同形,白下3位分斷黑棋,黑若下A位,只剩一氣,白下B位提黑七子,黑死。

如果是角上的盤角板六,同樣也有缺陷。

黑下4位時只剩一氣,形成打

如果盤角板六連一個外氣也沒有,則可直接殺棋。

上圖中,白下3位以後,黑下在A位只剩一氣,形成脹死牛,黑死。

盤角板六至少要鬆兩氣,才可避免威脅。

錯估

偶爾也會有看似破綻百出的板六,實際上卻殺不了的情況。

圖中的板六看似破綻百出,其實白已動不了黑。

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板六
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