lotus

previous page: 109 competition/games/chess/knight.tour.p
  
page up: Puzzles FAQ
  
next page: 111 competition/games/chess/queen.most.p

110 competition/games/chess/queen.control.p




Description

This article is from the Puzzles FAQ, by Chris Cole chris@questrel.questrel.com and Matthew Daly mwdaly@pobox.com with numerous contributions by others.

110 competition/games/chess/queen.control.p


How many queens does it take to attack or control the board?

competition/games/chess/queen.control.s

Five queens are required to attack every square:

    1   2   3   4   5   6   7   8
   ___ ___ ___ ___ ___ ___ ___ ___
h |   |   |   |   |   |   |   |   |  
   --- --- --- --- --- --- --- ---
g |   |   |   | Q |   |   |   |   |
   --- --- --- --- --- --- --- ---
f |   |   |   | Q |   |   |   |   |
   --- --- --- --- --- --- --- ---
e |   |   |   | Q |   |   |   |   |
   --- --- --- --- --- --- --- ---
d |   |   |   | Q |   |   |   |   |
   --- --- --- --- --- --- --- ---
c |   |   |   |   |   |   |   |   |
   --- --- --- --- --- --- --- ---
b |   |   |   |   |   |   |   |   |
   --- --- --- --- --- --- --- ---
a |   |   |   | Q |   |   |   |   |
   --- --- --- --- --- --- --- ---

There are other positions with five queens.

 

Continue to:













TOP
previous page: 109 competition/games/chess/knight.tour.p
  
page up: Puzzles FAQ
  
next page: 111 competition/games/chess/queen.most.p