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#13 Spurious Anticirce s#1 refutation

v4.37
closed-fixed
None
5
2008-03-16
2008-03-14
No

Popeye 4.41 gives a spurious refutation in this problem:

begin

Stipulation s#1
Condition AntiCirce

Pieces
White Sg7 Ke6 Pd5 Pe5 Bg4 Sh4 Qe3 Ph2
Black Pe7 Kh3 Bd1 Rf1
Option Try Variation

EndProblem

for the try:

1.Qe3-f3 ?
1...Bd1*f3[bBf3->c8] #
but
1...Bd1*f3[bBf3->c8] + !

Discussion

  • Thomas Maeder

    Thomas Maeder - 2008-03-16

    Logged In: YES
    user_id=714202
    Originator: YES

    The bug didn't require Anticirce:

    begin
    stipulation s#1
    pieces white kb2 qf8 bb1 sa1c1 pa3c2h5 black kh7 rd3 pa4b3d4
    option try
    end

    ...

    1.c2-c4 !
    1...d4*c3 ep. #

    1.c2-c3 ?
    1...d4*c3 #
    but
    1...d4*c3 + !

    Fixed in current development head and in releases >4.41.

     
  • Thomas Maeder

    Thomas Maeder - 2008-03-16
    • milestone: --> v4.37
    • assigned_to: nobody --> thomasmaeder
    • status: open --> closed-fixed
     

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