🚀 go-pugleaf

This is the way I checked what GNU Chess 5.x would send to xboard
in that position:

Black (9) : xboard on

level 60 5 0
post
go
Root = 248, Phase = 1
Time = 6.85, Max = 27.40, Left = 300.00, Moves = 52
Ply   Time     Eval      Nodes   Principal-Variation
1. 259 0 41      Nxd4 Qxd4
2. 266 0 374     Nxd4 Qxd4 d5 Nxa7 Nxe4 Nxc8 Rxc8
3. 275 0 2133    Nxd4 Qxd4 Ba6 Qc4+ d5 exd5 Bxb5 Qxb5 Nxd5
4. 280 200 8791  Ba6 Nxc6 dxc6 Qxd8 Rxd8 Nxa7 Bxf1 Kxf1 Nxe4
                                 Nxc6
5. 277 700 37158         Nxd4 Nxd4 d5 e5 Bg4 Qd3
9. ... c6d4
My move is: c6d4

Seems like legal input to xboard to me...

I couldn't send 5.x to you because of your nospam.

--Stuart


On Wed, 01 Nov 2000 03:32:13 GMT, "Stephen C Morgana"
<nospam@nospam.nohow> wrote:

>Hi,
>
>I've encountered a bug in GNU Chess 5.0 on a Sun Sparc Solaris platform and
>attempted to send a report to bug-gnu-chess@ai.mit.edu (the address
>mentioned in the README file) however, my mail bounces back from that
>address.
>
>Hopefully posting the problem to this newsgroup will be helpful.
>
>The bug:
>  I played a game where gnuchess captured a piece with a knight, by moving
>the knight diagonally forward one square, i.e.  it captured the way a pawn
>would capture.
>
>I figured someone might  care about this type of behavior.
>Unfortunately I can not reproduce the problem.
>
>The moves of the game are as follows (Please no comments on my game playing
>:-) I was playing white:
>    1. e4 Nc6
>    2. Bc4 e5
>    3. Nc3 Nf6
>    4. Nf3 b5
>    5. Bxf7+ Kxf7
>    6. O-O Kg8
>    7. d4 exd4
>    8. Nxd4 b4
>    9. Ncb5 Nc6xb5
>    10. Nxb5 d5
>    11. Bf4 Bg4
>    12. Qd4 b8c6
>
>The problem occurred on move 9 ... Nc6xb5  where it explicitly moved a
>knight diagonally to capture.  I did not notice the problem (was making
>moves in between editing/compiling stuff) until move 12 ... b8c6 produced no
>visible difference in the board (since b8 was an empty square).
>
>By the way, I launched gnuchess with "xboard -size slim -depth 1" if that
>matters, and I am running it without a book file since the install targets
>in the Solaris Makefile are broken. Yes,  I can not say for sure if this is
>a gnuchess bug or an xboard bug.
>
>
>--
>Stephen
>1nagroms at retsehcor dot rr dot moc
>(reverse the letters, replace the at and dots with symbols)
>
>