推荐回答（3个）
在下认为对于对攻的计算，不仅要对气进行计算，还要注意棋型。提升对于棋行的计算力才是重要的。
举一个简单的例子：
G ●○●J ○F ●I E ┬
●A ○●●H ●●●○┼
○○○○●●●○○○┼
D B C ●○○○○┼○┼
├●┼●○┼┼┼○┼┼
├┼┼●○┼○┼┼┼┼
├●┼●●┼┼┼┼┼┼
├┼┼┼┼●┼┼┼┼┼
├┼┼●┼┼┼┼┼┼┼（黑先白死）
（此图建议复制到记事本上来看）
正解：黑A，白E，黑B，白I，黑C，白G，黑A，白F，黑D，白H，黑J，白1.6，黑1.2，白2.1，黑A。
按常理，黑在B与A位落子的意义是一样的，都是紧白一气。但是若黑下在B位，则白有A位的手筋，白简单活，黑自然死。可见棋行的分析是很重要的。当然“眼内有4气，可看作有4口外气，眼内有5气，可看作有7口外气”的说法也要因时而异。
对于死活问题，棋行的计算至关重要。在脑海中浮现棋型，气与结果一目了然，自然会次序正确，下出手筋。
是双活的话就对半分！如果用的是“应氏规则”就看这个空的周围有多少子，按双方的子的多少分（股份制）！比如说：一个空周围有三个黑子，一个白子，那黑棋就占四分之三子，白棋四分之一子！
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