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[DhtmlXQ_adddate]2020-02-09 12:28:10[/DhtmlXQ_adddate]
[DhtmlXQ_editdate]2020-02-09 12:28:10[/DhtmlXQ_editdate]
[DhtmlXQ_title]计算步数 辨别先手[/DhtmlXQ_title]
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[DhtmlXQ_owner]象棋残局解析[/DhtmlXQ_owner]
[DhtmlXQ_oldowner]象棋残局解析[/DhtmlXQ_oldowner]
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[DhtmlXQ_comment0] 从开局演变到前中局，有效步数在一定程度上反映了先手的状况。但到真正中局，步数已不起主要作用，亦不便计算，就不宜采用。 如图，红方的有效棋步是炮二平五，马二进三，车一进一，车一平四，车四进七，马八进七，兵七进一，兵五进一，炮八平九，车九平八，共10步。黑方的有效棋步是马8进7，车9平8，马2进3，卒7进1，炮8进4，车1平2，炮2进4，士4进5，共8步。双方比较，红多走2步，便认为红方先手。试拟红先着法如下：[/DhtmlXQ_comment0]
[DhtmlXQ_comment3] 避兑黑左炮打边兵，仍企图炮五平二打车。[/DhtmlXQ_comment3]
[DhtmlXQ_comment11] 红有强烈攻势，伏炮五平三打车后，跳马五进六咬马兼打车，黑难应付。[/DhtmlXQ_comment11]
[DhtmlXQ_comment1_15]红必得子。[/DhtmlXQ_comment1_15]
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