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Attack! (2) (Posted on 2013-05-09) Difficulty: 3 of 5
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    | WK |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
|    |    |    |    |    |    |    |    |
+----+----+----+----+----+----+----+----+
Place 2 queens, 2 white bishops and 2 black bishops on this chessboard so that every square is under attack.

One white king has already been placed (as shown in the above diagram.)

No Solution Yet Submitted by K Sengupta    
Rating: 4.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Why the 'white' king? | Comment 2 of 7 |
(In reply to Why the 'white' king? by brianjn)

There is a flaw in what I presented:
"all unoccupied squares are not threatened."

The Queen in the 5th column does not command all squares in that column; all unoccupied squares in that column are threatened expect the 8th row, a bishop blocks the Queen's authority!

  Posted by brianjn on 2013-05-11 05:54:06

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