Winboard Forum

I don't now what exactly went wrong here. I'm not sure if it is an xboard bug.

In this game Baron was checkmated by Xpdnt:

[Event "Computer chess game"]
[Site "vlk-ubuntu"]
[Date "2006.08.25"]
[Round "2"]
[White "The Baron 1.7.0"]
[Black "Xpdnt_060824"]
[Result "0-1"]
[TimeControl "60+1"]
[FEN "2rq1rk1/p2nbppp/bpp1p3/3p4/2PPP3/1PB3P1/P2N1PBP/R2Q1RK1 b - - 0 1"]
[SetUp "1"]

{--------------
. . r q . r k .
p . . n b p p p
b p p . p . . .
. . . p . . . .
. . P P P . . .
. P B . . . P .
P . . N . P B P
R . . Q . R K .
black to play
--------------}
1... b5 2. Re1 bxc4 3. bxc4 dxc4 4. Qa4 Qb6 5. Bf1 Bb5 6. Qd1 c5 7. Nxc4
Qa6 8. dxc5 Nxc5 9. Nd6 Bxd6 10. Bxb5 Qxb5 11. Qd4 f6 12. Qxd6 Rfd8 13. Qf4
Nd3 14. Qd2 Ne5 15. Qb2 Nf3+ 16. Kg2 Nxe1+ 17. Rxe1 Qxb2 18. Bxb2 Rc2 19.
Bc1 Rxa2 20. Kf3 Kf7 21. Re2 Rxe2 22. Kxe2 a5 23. f3 Rc8 24. Kd2 e5 25. Ba3
Ke6 26. h3 Rd8+ 27. Kc2 h5 28. g4 h4 29. Bb2 Rc8+ 30. Kd3 Rb8 31. Kc3 a4
32. Kc2 Rb5 33. g5 fxg5 34. Bc1 g4 35. fxg4 Rb3 36. Bd2 Rxh3 37. Be1 a3 38.
Bb4 a2 39. Kb2 Rb3+ 40. Kxb3 a1=Q 41. Bc3 Qb1+ 42. Ka3 h3 43. Bb4 h2 44.
Ka4 h1=Q 45. Kb5 Qhf1+ 46. Kc6 Qc4+ 47. Kb7 Qbxb4+ 48. Ka8 Qa2#
{Black wins on time} 0-1

In addition it also lost on time. Here is Baron's log file:

Code: Select all

--- at 194992 ---
0 move b7a8

--- at 194992 ---
1
Nodes:               19
Qnodes:               1
1 Eval:                 1
Eval cutoffs:         1
1 False Allnodes:       0.0
1 Time:    0:00
Clock:   0:13 seconds

1 Hashtable probes:         38/        7
Hashtable hits:           38/        7

1 Check extensions:               0
1 Onereply extensions:            0
1 Mate extensions:                0
1 Recap extensions:               0
1 Same Threat extensions:         0
1 TB probes:         0
TB hits:           0

1 ETC: 0/0
1 REP: Hash: 0/0  ETC: 0

1 History pruning: 0/0
1 Pondermove selected: c4a2

--- at 194992 ---
1  ply       time        nodes   score  pv

--- at 194992 ---
0 2- -32767 0 10  Qc4-a2
--- at 194992 ---
0 2. -32767 0 20  Qc4-a2
--- at 194992 ---
1 Search ends: No faster mate can be found

--- at 195466 ---
2 Command received: time 1664

--- at 195466 ---
2 Responding to command: time
1 Pondermove selected: c4a2

--- at 195467 ---
1  ply       time        nodes   score  pv

--- at 195467 ---
0 2- -32767 0 10  Qc4-a2
--- at 195467 ---
0 2. -32767 0 20  Qc4-a2
--- at 195467 ---
1 Search ends: No faster mate can be found

--- at 195467 ---
2 Command received: otim 417

--- at 195467 ---
2 Responding to command: otime
1 Pondermove selected: c4a2

--- at 195467 ---
1  ply       time        nodes   score  pv

--- at 195467 ---
0 2- -32767 0 10  Qc4-a2
--- at 195467 ---
0 2. -32767 0 20  Qc4-a2
--- at 195467 ---
1 Search ends: No faster mate can be found

--- at 195467 ---
2 Command received: c4a2

--- at 195467 ---
2 Responding to command: c4a2

--- at 195467 ---
0 0-1 {Black mates, Baron is sad}

--- at 212250 ---
2 Command received: result 0-1 {Black wins on time}

--- at 212250 ---
2 Responding to command: result

--- at 212254 ---
2 Command received: quit

--- at 212254 ---
2 Responding to command: quit


All remaining time where used here (~16 seconds). It seems xboard didn't understood Baron. But why does it happen only sometimes (I have some similar games)?

Volker