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Not so trivial (Posted on 2016-03-18) Difficulty: 4 of 5
In a certain chess position, each row and each column contains an odd number of pieces.

Prove that the total number of pieces on black squares is an even number.

Source: Proizvolov, “Problems Teaching Us How to Think".

No Solution Yet Submitted by Ady TZIDON    
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Some Thoughts A question. | Comment 2 of 6 |

  Managed to resolve it myself.

Edited on March 19, 2016, 12:53 am
  Posted by broll on 2016-03-19 00:50:00

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