The computer can "only" calculate like 20-25 moves forward White The mate takes like 35 moves, engines doesn't play according to plans they only calculate. You need tablebases to an engine si it can do The mate
Computer can't force a checkmate with Bishop & Knight?
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It's quite strange, when a computer (not a 9999+ engine, but many computer chess programs on internet or your telephone) CAN NOT checkmate you / each other with a Knight & Bishop.
What do you think?