I think it is a good idea to start a new thread
that is about engine's blunders
since strong engines rarely make big blunders

so if someone finds a super big blunder made by a super strong engine
that is something novel and
something hard to come by

this is like a rare jem

humans make blunders often when humans become tired or distracted but

but a big blunder only accrues once in a blue moon among the super engines



***


just like a niche market

if all products look similar but
one product is idiosyncratic
then that product is a rare jem


***


moreover, if the next version of that engine
which made such a big blunder comes with the bug fix
or engine improvement
so that the next versions don't have such a blunder
then it is good for the fans and enthusiasts
since that engine just got a huge improvement in elo ratings!



***


this is the first post of the series




amazing greatest blunders of the best engines (periodical ser Bqtq10



amazing greatest blunders of the best engines (periodical ser Qwgqqq10



amazing greatest blunders of the best engines (periodical ser Qerqre10




to see the match
we must make a pgn file with the following pgn content

the following pgn format is not compatible with
the pgn viewer
so pgn viewer is not available
but we can make a pgn file
then that pgn file worked fine under winboard
I didn't test that pgn file with other GUIs to see the pgn works well




{\rtf1\ansi\ansicpg949\deff0\deflang1033\deflangfe1042{\fonttbl{\f0\fmodern\fprq1\fcharset129 \'b1\'bc\'b8\'b2;}}
{\*\generator Msftedit 5.41.15.1515;}\viewkind4\uc1\pard\lang1042\f0\fs20 [Event "Computer Chess Game"]\par
[Site "USER01"]\par
[Date "2013.11.06"]\par
[Round "9"]\par
[White "Houdini 3 Pro w32"]\par
[Black "Strelka 5.1"]\par
[Result "0-1"]\par
[TimeControl "60/60"]\par
[Annotator "9. +0.29 13... +0.32"]\par
\par
1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8.\par
Bf4 Qa5+ 9. c3 \{+0.29/14 1.6\} Ngf6 10. Be2 \{+0.21/15 2.2\} Nd5 11. Bd2\par
\{+0.26/15 1.0\} Qc7 12. c4 \{+0.15/14 0.9\} N5f6 13. Bb4 \{+0.10/13 1.2\} e6\par
\{+0.32/14 1.3\} 14. Bxf8 \{+0.07/15 1.0\} Nxf8 \{+0.21/15 1.0\} 15. O-O\par
\{+0.07/16 1.5\} N8d7 \{+0.21/16 1.1\} 16. Bd3 \{+0.06/16 1.2\} Bxd3\par
\{+0.18/15 1.4\} 17. Qxd3 \{+0.07/15\} O-O \{+0.23/15 1.0\} 18. Rad1\par
\{+0.07/15 1.3\} a5 \{+0.11/14 1.1\} 19. Rfe1 \{+0.12/14 0.8\} Rad8\par
\{+0.18/14 1.8\} 20. Ne4 \{+0.16/14 1.0\} Nxe4 \{-0.19/14 2.1\} 21. Qxe4\par
\{+0.16/12\} c5 \{-0.12/15 1.5\} 22. Qe3 \{+0.21/14 1.3\} cxd4 \{-0.21/14 1.2\} 23.\par
Rxd4 \{+0.05/14 1.0\} Rfe8 \{+0.11/14 1.4\} 24. Red1 \{+0.12/14 0.9\} e5\par
\{+0.32/15 1.0\} 25. Rd6 \{+0.08/16 1.0\} e4 \{+0.27/12\} 26. Nh2 \{+0.06/17 1.4\}\par
Nf6 \{+0.05/15 1.0\} 27. Rxd8 \{+0.06/18 1.2\} Rxd8 \{+0.05/13\} 28. Rxd8+\par
\{+0.10/18 0.9\} Qxd8 \{-0.01/13\} 29. Nf1 \{+0.10/18 1.0\} b6 \{-0.14/16 1.6\} 30.\par
b3 \{+0.07/18 1.7\} Qd6 \{-0.21/17 1.2\} 31. Qg3 \{+0.18/17 2.7\} Qd4\par
\{-0.23/17 1.7\} 32. Qb8+ \{+0.08/17 2.7\} Kh7 \{-0.23/15\} 33. Qf4 \{+0.17/17 6\}\par
h5 \{-0.08/16 2.5\} 34. Qe3 \{+0.01/15 0.8\} Qd6 \{+0.18/17 1.2\} 35. g3\par
\{+0.11/16 0.6\} Kg8 \{-0.17/17 5\} 36. Qg5 \{+0.16/16 0.9\} Qd4 \{-0.09/16 1.3\}\par
37. Ne3 \{+0.15/16 0.8\} g6 \{-0.07/17 0.9\} 38. Kg2 \{+0.06/16 0.8\} Qb2\par
\{-0.01/17 2.2\} 39. Qb5 \{+0.11/16 0.7\} Qd4 \{-0.08/17 1.4\} 40. Qc6\par
\{+0.08/18 0.9\} Kg7 \{-0.08/18 1.4\} 41. Qc8 \{+0.10/18 1.0\} Qd6 \{-0.08/18 0.8\}\par
42. Qf5 \{+0.13/18 0.7\} Qd4 \{-0.10/18 0.9\} 43. Qf4 \{+0.12/18 0.9\} Kg8\par
\{-0.19/18 1.1\} 44. Qc7 \{+0.09/17 1.0\} Kf8 \{-0.20/18 1.4\} 45. c5\par
\{+0.11/16 2.4\} bxc5 \{-0.09/14 1.2\} 46. Qxa5 \{+0.16/16 0.7\} Ng4\par
\{-0.29/16 1.3\} 47. Nxg4 \{+0.19/15 1.2\} hxg4 \{-0.29/14\} 48. Qe1\par
\{+0.19/17 1.1\} Qd5 \{-0.29/16 1.9\} 49. Kg1 \{+0.23/16 0.5\} f5 \{-0.28/15 1.0\}\par
50. Qe3 \{+0.16/15 0.6\} Ke7 \{-0.24/15 1.3\} 51. a4 \{+0.23/14 0.7\} Qd1+\par
\{-0.28/16 2.0\} 52. Kh2 \{+0.22/15 0.6\} Qd4 \{-0.22/17 1.0\} 53. Kg2\par
\{+0.35/15 0.7\} Qd5 \{-0.15/16 0.8\} 54. a5 \{+0.14/12 0.7\} Kd6 \{-0.29/16 2.1\}\par
55. Kh2 \{+0.11/15 0.9\} Qd4 \{-0.01/16 0.7\} 56. Qxd4+ \{-0.04/16 0.6\} cxd4\par
\{-0.01/14\} 57. Kg2 \{-0.01/18 0.7\} f4 \{+0.16/17 1.8\} 58. gxf4 \{-0.01/16 0.7\}\par
d3 \{+16.50/14 0.6\} 59. a6 \{-6.73/16 1.7\} Kc6 \{+16.41/13\} 60. Kf1\par
\{-6.87/17 0.8\} d2 \{+16.60/12\} 61. Ke2 \{-6.87/15\}\par
\{Xboard adjudication\} 0-1\par
}




***


the following is the next moves after the finish line of pgn
the following move history is calculated by critter 1.6a


this is like the model answer of a chess quiz to what happens after the pgn finishes



e3 {+8.57/15} 2. fxe3 {-9.35/15} g3 {+8.82/13} 3. f5 {-9.39/15} g2 {+9.41/13} 4. fxg6 {-9.89/15}