Eight Queens
2.5M10,000+
Puzzle
3.0
![Eight Queens Screen Shot 0](https://res.playyah.com/group3/M00/8D/9B/4pMEAFt3RWaAQGkIAAAnbDDBeYw458.jpg?x-oss-process=style/mq200)
![Eight Queens Screen Shot 1](https://res.playyah.com/group3/M00/8D/B2/4ZMEAFt3RWaAN49uAAAhWTxA22M093.jpg?x-oss-process=style/mq200)
![Eight Queens Screen Shot 2](https://res.playyah.com/group3/M00/8D/B1/4ZMEAFt3RWaAGIG1AAAqIYZ5UkI234.jpg?x-oss-process=style/mq200)
![Eight Queens Screen Shot 3](https://res.playyah.com/group3/M00/8D/9B/4pMEAFt3RWaAayBKAAAlpOtbl50918.jpg?x-oss-process=style/mq200)
![Eight Queens Screen Shot 4](https://res.playyah.com/group3/M00/8D/B1/4ZMEAFt3RWaAQ6BcAAAijpFDmr4738.jpg?x-oss-process=style/mq200)
Eight Queens
The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so that no two queens threaten each other. Thus, a solution requires that no two queens share the same row, column, or diagonal. The eight queens puzzle is an example of the more general n queens problem of placing n non-attacking queens on an n×n chessboard, for which solutions exist for all natural numbers n with the exception.
History
Chess composer Max Bezzel published the eight queens puzzle in 1848. Franz Nauck published the first solutions in 1850. Nauck also extended the puzzle to the n queens problem, with n queens on a chessboard of n × n squares.
Since then, many mathematicians, including Carl Friedrich Gauss, have worked on both the eight queens puzzle and its generalized n-queens version. In 1874, S. Gunther proposed a method using determinants to find solutions. J.W.L. Glaisher refined Gunther's approach.
In 1972, Edsger Dijkstra used this problem to illustrate the power of what he called structured programming. He published a highly detailed description of a depth-first backtracking algorithm.
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Cosa c'è di nuovo
version 0.9
Bug fixes
Added difficulty levels
Design changes
Informazione
- ID:com.selfapps.a8queengame
- Categoria:Puzzle
- Aggiornata:2018-08-18
- Versione:0.9
- Richiede:Android 4.4
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