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📰 *LL6*: *$1 M prize to build computer programme to solve Queens Puzzle*
Clay Mathematics Institute in the US is offering anyone who can solve a chess problem called the Queens Puzzle a prize of one million dollars. Devised in 1850, the Queens Puzzle originally challenged a player to place eight queens on a standard chessboard so that no two queens could attack each other, & scientists claim it's impossible to crack.
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Answer 1

https://www.sololearn.com/discuss/685610/?ref=app