Author: José de Jesús García Ruvalcaba
Date: 10:51:59 03/26/99
Go up one level in this thread
On March 26, 1999 at 12:58:52, Dann Corbit wrote:
>On March 26, 1999 at 12:11:56, José de Jesús García Ruvalcaba wrote:
>
>>On March 26, 1999 at 11:40:31, Dann Corbit wrote:
>>
>>>On March 25, 1999 at 18:48:02, Matthew Herman wrote:
>>>[snip]
>>>>>>1st position : velirimovic attack
>>>>>>r1b2rk1/2q1bppp/p1npp3/1pnB1N11/4P1P1/2N1B3/PPP1QP1P/2KR2R w - -
>>>[snip]
>>>>3 rooks?? Where do you see 3 Rs? one first rank is 2KR2R .. no other ranks that
>>>>have Rs (for white).. Also, Qb8 is slow, white will play h4-h5 and get the
>>>>attack in very quickly, before black has a chance to open up the queenside.
>>>Well, I am not sure what is wrong. When I look at the string I don't see them.
>>>WHen I fed the row to crafty, it puked. All my other EPD readers puked on it
>>>too. So I put the position in epd2diag so I could look at it, and it displays 3
>>>rooks! So there is a bug in epd2diag. I am sure something is wrong with the
>>>EPD description, but I am not sure what.
>>
>> I gave the fen string to crafty (with setboard) and the I typed "display", and
>>I only see two white rooks.
>> How did you feed the position to crafty?
>epdpfga with string:
>r1b2rk1/2q1bppp/p1npp3/1pnB1N11/4P1P1/2N1B3/PPP1QP1P/2KR2R w - -
>in a file. I think I see the problem. The last row described only has 7
>squares defined. After adding a 1 to the end, crafty likes Bxc6.
>
My humble suggestion to the developers of fen and epd reading tools is to check
the number of rows and the number of squares in each row. If they do not match
eight, then reject the position with an error message, instead of accepting it
(which will very likely give a different position).
>From the PGN Standard:
>16.2.3.1: Piece placement data
>
>The first field represents the placement of the pieces on the board. The board
>contents are specified starting with the eighth rank and ending with the first
>rank. For each rank, the squares are specified from file a to file h. White
>pieces are identified by uppercase SAN piece letters ("PNBRQK") and black
>pieces are identified by lowercase SAN piece letters ("pnbrqk"). Empty squares
>are represented by the digits one through eight; the digit used represents the
>count of contiguous empty squares along a rank. A solidus character "/" is
>used to separate data of adjacent ranks.
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