you are right, car cannot 2.5. black 2 cannons in awkard position near palace.How to tell it is black advantage though black has literally wiped out black's defence. Please advise :-)
可能是因为这样：
要是对弈棋手棋力相近
[1] 红没防守子力，久战，红只能猛攻，黑进攻手段多。黑边马加入战区将形成车马炮归边杀势，红马炮又不能随便进攻。
[2] 黑士象稳全（红炮吃象失子）
[3] 黑也有双炮单车杀势
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