***** Pairing round 4
The colors are not yet assigned

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 Pairing group 1
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[Standard case] 1 White e 1 Black
   1 -   2

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 Pairing group 2
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[Ch 7.2] Group odd! 0 White e 3 Black
    ... better upfloater:5 (U=-2, D=-3)
    > moving player 5 from [3 W] to [2 W]

[Ch 7.3 7.4] Colors not equal 1 White e 3 Black
    > moving player 9 from [2 B] to [2 W]

[Standard case] 2 White e 2 Black
   5 -   9
   6 -  11

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 Pairing group 3
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[Ch 7.2] Group odd! 3 White e 2 Black
    ... better upfloater:12 (U=-3, D=0)
    > moving player 12 from [4 W] to [3 W]

[Ch 7.3 7.4] Colors not equal 4 White e 2 Black
    > moving player 10 from [3 W] to [3 B]

[Standard case] 3 White e 3 Black
   8 -   4
  12 -  10
   3 -   7