[Retros] using a=>b in Popeye

[Thomas Maeder]

Joost de Heer wrote:

> peter.fayers at virgin.net wrote:

>> Can anyone please tell me how to enter diagram b when using stip a=>b 

>> in Popeye?

> 

> begin

> fors beginposition

> stip a=>b7

> fors endposition

> end

> 

> In a=>b, black begins. If you want white to start, use 'option white'.

> 

> Example how to do a proofgame:

> 

> begin

> fors rsbqkbsr/pppppppp/8/8/8/8/PPPPPPPP/RSBQKBSR

> stip a=>b2

> fors r1bqkbsr/pppppppp/8/4s3/8/8/PPPP1PPP/RSBQKBSR

> opt whi

> end


Currently, Popeye's output doesn't mention which side is to move. I consider 
this a nuisance if the problem doesn't have a solution (e.g. because Popeye 
lets Black move first while the user intends to let White move first); do you 
agree.

The current development head (source downloadable from 
http://sourceforge.net/projects/popeye-chess/) produces this:

+---a---b---c---d---e---f---g---h---+

|                                   |

8  -R   .  -B  -Q  -K  -B  -S  -R   8

|                                   |

7  -P  -P  -P  -P  -P  -P  -P  -P   7

|                                   |

6   .   .   .   .   .   .   .   .   6

|                                   |

5   .   .   .   .  -S   .   .   .   5

|                                   |

4   .   .   .   .   .   .   .   .   4

|                                   |

3   .   .   .   .   .   .   .   .   3

|                                   |

2   P   P   P   P   .   P   P   P   2

|                                   |

1   R   S   B   Q   K   B   S   R   1

|                                   |

+---a---b---c---d---e---f---g---h---+
   a=>b2(White)              15 + 16

Initial:

+---a---b---c---d---e---f---g---h---+

|                                   |

8  -R  -S  -B  -Q  -K  -B  -S  -R   8

|                                   |

7  -P  -P  -P  -P  -P  -P  -P  -P   7

|                                   |

6   .   .   .   .   .   .   .   .   6

|                                   |

5   .   .   .   .   .   .   .   .   5

|                                   |

4   .   .   .   .   .   .   .   .   4

|                                   |

3   .   .   .   .   .   .   .   .   3

|                                   |

2   P   P   P   P   P   P   P   P   2

|                                   |

1   R   S   B   Q   K   B   S   R   1

|                                   |

+---a---b---c---d---e---f---g---h---+
   a=>b2(White)              16 + 16

which gives the information but doesn't look very nice. Suggestions for 
improvement are welcome.

-- 
Thomas