Eden 0.0.10 released. Now has WB. Hello to you all!

[Nicolai Czempin]

Find the latest version (0.0.10) of my chess engine Eden here:
http://www.czempin.de/nicolai/blog/archives/000339.php

The overall playing strength is still low, but higher than 0.0.9.

Changes from 0.0.9->0.0.10
- Asynchronous behaviour (accepts commands while "thinking"), so the stop command now works properly! Hurray for Java Threads!!
- WB now suported
- opening book
- transposition hashtable
- pawn structure hashtable
- basic endgame detection
- improved king safety
- passed pawns
- killer heuristic (2 killers)
- forced move extension
- check extension
- improved move ordering
- pv display fixed
- mate in n correctly displayed
- many major and minor bugfixes and other changes

Have fun with it, and let me know of any problems. PLEEEZE!

[Nicolai Czempin]

Okay, working late night on WB at Pizza Hut (and not sanity-testing UCI) let a bug creep into UCI mode.

UCI is completely unusable. WB should work.

I'll try to get it fixed as soon as possible, it should be easy to fix.

[Nicolai Czempin]

Okay, working late night on WB at Pizza Hut (and not sanity-testing UCI) let a bug creep into UCI mode.

UCI is completely unusable. WB should work.

I'll try to get it fixed as soon as possible, it should be easy to fix.

Okay, fixed now.

[Tord Romstad]

Find the latest version (0.0.10) of my chess engine Eden here:
http://www.czempin.de/nicolai/blog/archives/000339.php

Thanks a lot, Nicolai!

Eden 0.0.10 appears to run without any sort of problems on my Mac, and is quite an enjoyable opponent. For the first time in years, I am having fun playing against the computer.

Tord

[Nicolai Czempin]

Sigh. 0.0.10a is the DEBUG version, terribly slow because of all the output. It may be interesting to see all the info, but it plays much weaker. And, no, you can't disable the DEBUG mode.

In addition, the time control bug for games with x moves in y minutes was worse than I had thought (I had tested only with fairly small x, it turns out size does matter) is now fixed.

And I did some more extensive testing before releasing this version. Everything should be okay. To the 50 people that downloaded the original, and the 30 people that downloaded 0.0.10a, I sincerely apologize. And to the rest: It is safe now, you can come.

[Nicolai Czempin]

Find the latest version (0.0.10) of my chess engine Eden here:
http://www.czempin.de/nicolai/blog/archives/000339.php

Thanks a lot, Nicolai!

Eden 0.0.10 appears to run without any sort of problems on my Mac, and is quite an enjoyable opponent. For the first time in years, I am having fun playing against the computer.

Tord

Wow, thanks for the kind words. Your enjoyment may go up or down with the REAL Eden 0.0.10 I've just put up , version 0.0.10b

[Volker Pittlik]

...
Wow, thanks for the kind words. Your enjoyment may go up or down with the REAL Eden 0.0.10 I've just put up , version 0.0.10b

Does the new version already deal with the following phanonemon which occurs when I used the previous version Polyglot and Xboard?

Code: Select all

POLYGLOT NEW GAME
POLYGLOT WAIT
> ENGINE ucinewgame
< XBOARD random
< XBOARD ics -
< XBOARD level 0 0:05 0
< XBOARD post
< XBOARD hard
POLYGLOT WAIT
< XBOARD ping 1
> XBOARD pong 1
< XBOARD force
POLYGLOT WAIT
< XBOARD setboard rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1
POLYGLOT FEN rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1
POLYGLOT WAIT
< XBOARD computer
< XBOARD name prophet
< ENGINE isready
< XBOARD time 500
< XBOARD otim 458
< XBOARD usermove e6e5
POLYGLOT MOVE e5
POLYGLOT WAIT
< XBOARD go
POLYGLOT THINK
POLYGLOT START SEARCH
POLYGLOT FEN rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP3/2N1BP2/PPP3PP/R2QKB1R w KQkq - 0 2
> ENGINE position fen rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1 moves e6e5
> ENGINE go wtime 5000 btime 4580
< ENGINE Exception in thread "Thread-1" java.lang.StackOverflowError
< ENGINE    at de.czempin.chess.eden.brain.EdenBrain.printInfo(EdenBrain.java:1396)
< ENGINE    at de.czempin.chess.eden.UCIProtocol.printInfo(UCIProtocol.java:51)
< ENGINE    at de.czempin.chess.eden.brain.EdenBrain.printInfo(EdenBrain.java:1396)
< ENGINE    at de.czempin.chess.eden.UCIProtocol.printInfo(UCIProtocol.java:51)
< ENGINE    at de.czempin.chess.eden.brain.EdenBrain.printInfo(EdenBrain.java:1396)


and so on several thousand lines until I killed the process.

Regards

Volker

[Nicolai Czempin]

...
Wow, thanks for the kind words. Your enjoyment may go up or down with the REAL Eden 0.0.10 I've just put up , version 0.0.10b

Does the new version already deal with the following phanonemon which occurs when I used the previous version Polyglot and Xboard?

Code: Select all

POLYGLOT NEW GAME
POLYGLOT WAIT
> ENGINE ucinewgame
< XBOARD random
< XBOARD ics -
< XBOARD level 0 0:05 0
< XBOARD post
< XBOARD hard
POLYGLOT WAIT
< XBOARD ping 1
> XBOARD pong 1
< XBOARD force
POLYGLOT WAIT
< XBOARD setboard rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1
POLYGLOT FEN rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1
POLYGLOT WAIT
< XBOARD computer
< XBOARD name prophet
< ENGINE isready
< XBOARD time 500
< XBOARD otim 458
< XBOARD usermove e6e5
POLYGLOT MOVE e5
POLYGLOT WAIT
< XBOARD go
POLYGLOT THINK
POLYGLOT START SEARCH
POLYGLOT FEN rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP3/2N1BP2/PPP3PP/R2QKB1R w KQkq - 0 2
> ENGINE position fen rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 1 moves e6e5
> ENGINE go wtime 5000 btime 4580
< ENGINE Exception in thread "Thread-1" java.lang.StackOverflowError
...


and so on several thousand lines until I killed the process.

Regards

Volker

Yes, that was the original problem in 0.0.10 that made UCI unusable. WB worked fine, except for a time control bug when using > 25 moves till the next time control (it always assumed it had 25, even when it had 40, so it would lose on time).

I then updated but forgot to remove the DEBUG=true, which meant in some situations it would crawl to a halt becaus of all the output. The time control bug was partially fixed, but because of the lack of time I had looked only at 10/20 moves to the next time control. This was version 0.0.10a.

Finally I removed the debug flag, fixed the WB time control bug, and test-played over 50 games in Arena, both UCI and WB, at time controls of 0 2 6, 40 5 0 and 0 5 0. All worked fine when I looked this morning, so it's 0.0.10b. Early reports seem to indicate all is fine.

Sorry for the inconvenience.

[Norm Pollock]

Hi Nicolai,

I was not able to install the jar implementation into the fritz9 gui and get it to work with either WB (with wb2uci) or UCI.

However I was able to get Jim's win32 exe to install as a UCI engine. Eden works in the fritz9 gui. Here are 2 games at 2'+1" tc.
Eden lost 2 games to pikoSzachy.

Code: Select all

[Event "P-16"]
[Site "?"]
[Date "2006.08.12"]
[Round "1.1"]
[White "PikoSzachy"]
[Black "Eden 0.0.10b"]
[Result "1-0"]
[ECO "C96"]
[Annotator "-0.14;-0.09"]
[PlyCount "87"]
[EventDate "2006.08.12"]
[EventType "tourn"]
[Source "Pollock"]
[TimeControl "120+1"]

{AMD Athlon(tm) XP 3000+ 2100 MHz W=7.7 ply; 539kN/s; Perfect v8.32.ctg B=5. 6
ply; 15kN/s; Perfect v8.32.ctg} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2.
Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:00]} a6 {
[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. O-O {
[%emt 0:00:00]} Be7 {[%emt 0:00:00]} 6. Re1 {[%emt 0:00:00]} b5 {[%emt 0:00:00]
} 7. Bb3 {[%emt 0:00:00]} O-O {[%emt 0:00:00]} 8. c3 {[%emt 0:00:00]} d6 {
[%emt 0:00:00]} 9. h3 {[%emt 0:00:00]} Na5 {[%emt 0:00:00]} 10. Bc2 {
[%emt 0:00:00]} c5 {[%emt 0:00:00]} 11. d4 {[%eval -14,7] [%emt 0:00:04]} cxd4
{(Qc7) [%eval -9,6] [%emt 0:00:06]} 12. cxd4 {[%eval -17,8] [%emt 0:00:07]} Nc6
{(Qc7) [%eval -6,6] [%emt 0:00:06]} 13. d5 {(Bg5) [%eval -16,8] [%emt 0:00:07]}
Nb4 {[%eval -10,6] [%emt 0:00:06]} 14. Bb3 {[%eval 17,8] [%emt 0:00:05]} Bd7 {
(a5) [%eval 192,5] [%emt 0:00:05]} 15. a3 {[%eval 224,8] [%emt 0:00:03]} Nbxd5
{(Nc6) [%eval 196,6] [%emt 0:00:05]} 16. Bxd5 {
(exd5) [%eval 222,8] [%emt 0:00:05]} Nxd5 {(Rc8) [%eval 172,6] [%emt 0:00:05]}
17. exd5 {(Qxd5) [%eval 221,8] [%emt 0:00:03]} Rc8 {
[%eval 165,6] [%emt 0:00:05]} 18. Nc3 {(Be3) [%eval 222,8] [%emt 0:00:04]} Bf5
{(f6) [%eval 173,6] [%emt 0:00:05]} 19. Be3 {[%eval 236,7] [%emt 0:00:04]} Qc7
{(Bf6) [%eval 180,5] [%emt 0:00:04]} 20. Rc1 {
(Bg5) [%eval 247,7] [%emt 0:00:03]} Qd8 {(Qa5) [%eval 183,5] [%emt 0:00:05]}
21. Qb3 {(Qd2) [%eval 252,7] [%emt 0:00:04]} Rb8 {
(Bf6) [%eval 178,5] [%emt 0:00:04]} 22. Bd2 {(Qb4) [%eval 267,7] [%emt 0:00:04]
} Rc8 {[%eval 179,5] [%emt 0:00:04]} 23. Re2 {
(Ne2) [%eval 247,6] [%emt 0:00:02]} Bd3 {(Bg6) [%eval 171,5] [%emt 0:00:04]}
24. Ree1 {(Re3) [%eval 240,8] [%emt 0:00:04]} Bf5 {
(Bc4) [%eval 0,6] [%emt 0:00:04]} 25. Re3 {[%eval 247,7] [%emt 0:00:04]} Rc4 {
(Bf6) [%eval 180,5] [%emt 0:00:04]} 26. a4 {(Ne2) [%eval 294,7] [%emt 0:00:03]}
Qb6 {(e4) [%eval 211,5] [%emt 0:00:04]} 27. axb5 {[%eval 293,6] [%emt 0:00:03]}
Rc5 {(Rc7) [%eval 237,5] [%emt 0:00:03]} 28. Ra1 {
(Re2) [%eval 327,6] [%emt 0:00:02]} axb5 {[%eval 180,5] [%emt 0:00:04]} 29.
Ree1 {(Na4) [%eval 341,7] [%emt 0:00:04]} Qb7 {
(Rcc8) [%eval 283,5] [%emt 0:00:03]} 30. Be3 {[%eval 336,8] [%emt 0:00:04]} Rc7
{[%eval 283,5] [%emt 0:00:03]} 31. Nxb5 {(Ra7) [%eval 351,7] [%emt 0:00:03]}
Bc2 {(Qb8) [%eval 284,5] [%emt 0:00:03]} 32. Qb4 {[%eval 369,7] [%emt 0:00:02]}
Rfc8 {(Qb8) [%eval 285,5] [%emt 0:00:03]} 33. Ra7 {[%eval 353,7] [%emt 0:00:03]
} Qb8 {[%eval 298,5] [%emt 0:00:03]} 34. Rxc7 {[%eval 339,7] [%emt 0:00:03]}
Rxc7 {[%eval 349,6] [%emt 0:00:03]} 35. Rc1 {
(Nxe5) [%eval 330,7] [%emt 0:00:02]} Rc8 {(Rb7) [%eval 313,5] [%emt 0:00:03]}
36. Qg4 {(Ne1) [%eval 325,6] [%emt 0:00:02]} f5 {
(Qb7) [%eval 296,5] [%emt 0:00:03]} 37. Qb4 {[%eval 311,8] [%emt 0:00:03]} f4 {
[%eval 296,5] [%emt 0:00:03]} 38. Bd2 {[%eval 306,7] [%emt 0:00:02]} Bd3 {
(Bf5) [%eval 454,5] [%emt 0:00:03]} 39. Rxc8+ {[%eval 424,9] [%emt 0:00:03]}
Qxc8 {[%eval 454,6] [%emt 0:00:03]} 40. Nxd6 {[%eval 474,9] [%emt 0:00:02]} Qf8
{(Qc7) [%eval 449,5] [%emt 0:00:03]} 41. Qb3 {
(Qc3) [%eval 483,8] [%emt 0:00:02]} Bg6 {(Be2) [%eval 480,6] [%emt 0:00:03]}
42. Nc4 {(Nb5) [%eval 502,8] [%emt 0:00:02]} e4 {[%eval 518,6] [%emt 0:00:02]}
43. d6 {(Nce5) [%eval 572,8] [%emt 0:00:03]} Bxd6 {
(Bf6) [%eval 564,5] [%emt 0:00:02]} 44. Nxd6+ {[%eval 635,8] [%emt 0:00:02]}
1-0

[Event "P-16"]
[Site "?"]
[Date "2006.08.12"]
[Round "2.1"]
[White "Eden 0.0.10b"]
[Black "PikoSzachy"]
[Result "0-1"]
[ECO "B80"]
[Annotator "0.92;0.66"]
[PlyCount "64"]
[EventDate "2006.08.12"]
[EventType "tourn"]
[Source "Pollock"]
[TimeControl "120+1"]

{AMD Athlon(tm) XP 3000+ 2100 MHz W=5.2 ply; 1kN/s; Perfect v8.32.ctg B=7.9
ply; 507kN/s; Perfect v8.32.ctg} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2.
Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {
[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {
[%emt 0:00:00]} a6 {[%emt 0:00:00]} 6. Be3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]}
7. f3 {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 8. g4 {[%emt 0:00:00]} h6 {
[%emt 0:00:00]} 9. Qd2 {[%emt 0:00:00]} Nbd7 {[%emt 0:00:00]} 10. O-O-O {
[%emt 0:00:00]} Bb7 {[%emt 0:00:00]} 11. Kb1 {[%eval 92,5] [%emt 0:00:06]} Qe7
{(Be7) [%eval 66,6] [%emt 0:00:06]} 12. Be2 {(a3) [%eval 101,5] [%emt 0:00:06]}
O-O-O {[%eval 53,6] [%emt 0:00:04]} 13. h4 {[%eval 77,5] [%emt 0:00:05]} b4 {
(Kb8) [%eval 58,7] [%emt 0:00:06]} 14. Na4 {[%eval 108,5] [%emt 0:00:05]} d5 {
[%eval 92,7] [%emt 0:00:05]} 15. g5 {[%eval 107,5] [%emt 0:00:05]} hxg5 {
[%eval 122,8] [%emt 0:00:06]} 16. hxg5 {[%eval 118,5] [%emt 0:00:05]} Rxh1 {
[%eval 119,8] [%emt 0:00:04]} 17. Rxh1 {[%eval 122,5] [%emt 0:00:05]} Ne8 {
[%eval 91,8] [%emt 0:00:05]} 18. exd5 {[%eval 119,5] [%emt 0:00:05]} exd5 {
[%eval 92,7] [%emt 0:00:02]} 19. Bf4 {(Nb3) [%eval 117,5] [%emt 0:00:04]} Nc7 {
[%eval 93,7] [%emt 0:00:03]} 20. Nf5 {(Re1) [%eval 119,5] [%emt 0:00:04]} Qe6 {
[%eval 58,7] [%emt 0:00:02]} 21. Nd4 {(Qd3) [%eval 106,5] [%emt 0:00:04]} Qe7 {
(Qe8) [%eval 59,8] [%emt 0:00:04]} 22. Re1 {(c3) [%eval 137,5] [%emt 0:00:04]}
Re8 {[%eval 79,8] [%emt 0:00:04]} 23. Nf5 {(c3) [%eval 109,5] [%emt 0:00:04]}
Qe6 {[%eval 68,8] [%emt 0:00:04]} 24. Nd4 {[%eval 99,5] [%emt 0:00:04]} Qe7 {
(Qh3) [%eval 39,8] [%emt 0:00:02]} 25. Nb3 {(c3) [%eval 96,5] [%emt 0:00:04]}
Qe6 {(Ne6) [%eval 80,8] [%emt 0:00:05]} 26. Na5 {[%eval 105,5] [%emt 0:00:04]}
Nb6 {(Ba8) [%eval 78,7] [%emt 0:00:03]} 27. Nxb7 {
(Nxb6+) [%eval 167,5] [%emt 0:00:04]} Nxa4 {[%eval 76,8] [%emt 0:00:04]} 28.
Na5 {[%eval 118,5] [%emt 0:00:03]} Nb5 {(Kb8) [%eval 86,7] [%emt 0:00:03]} 29.
g6 {(Nb3) [%eval 146,5] [%emt 0:00:03]} Qf6 {
(Qxg6) [%eval -294,8] [%emt 0:00:04]} 30. Qc1 {(c4) [%eval 40,5] [%emt 0:00:03]
} Rxe2 {(Qxg6) [%eval -478,7] [%emt 0:00:02]} 31. Rxe2 {
(Bd2) [%eval -485,5] [%emt 0:00:03]} Nbc3+ {
(Nac3+) [%eval -530,9] [%emt 0:00:02]} 32. bxc3 {[%eval -485,6] [%emt 0:00:03]}
Nxc3+ {[%eval -625,10] [%emt 0:00:03]} 0-1


-Norm

{edited}

I tried another game and this time Eden lost on time in a hopeless situation. It also caused the gui to hang and the next game was not able to load.

Code: Select all


[Event "P-17"]
[Site "?"]
[Date "2006.08.12"]
[Round "1.1"]
[White "PikoSzachy"]
[Black "Eden 0.0.10b"]
[Result "1-0"]
[ECO "D43"]
[Annotator "0.42;-0.08"]
[PlyCount "61"]
[EventDate "2006.08.12"]
[EventType "tourn"]
[Source "Pollock"]
[TimeControl "120+1"]

{AMD Athlon(tm) XP 3000+ 2100 MHz  W=7.4 ply; 493kN/s; Perfect v8.32.ctg  B=5.
4 ply; 8kN/s; Perfect v8.32.ctg} 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2.
c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} Nf6 {
[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 5. Bg5 {
[%emt 0:00:00]} h6 {[%emt 0:00:00]} 6. Bxf6 {[%emt 0:00:00]} Qxf6 {
[%emt 0:00:00]} 7. e3 {[%emt 0:00:00]} Nd7 {[%emt 0:00:00]} 8. Bd3 {
[%emt 0:00:00]} dxc4 {[%emt 0:00:00]} 9. Bxc4 {[%emt 0:00:00]} g6 {
[%emt 0:00:00]} 10. O-O {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 11. Ne4 {
[%eval 42,8] [%emt 0:00:06]} Qe7 {[%eval -8,6] [%emt 0:00:06]} 12. b3 {
(a4) [%eval 37,8] [%emt 0:00:06]} O-O {(Bxd4) [%eval -17,6] [%emt 0:00:06]} 13.
Rc1 {(Qc2) [%eval 28,8] [%emt 0:00:06]} b5 {(Rd8) [%eval -22,6] [%emt 0:00:05]}
14. Bd3 {[%eval 41,8] [%emt 0:00:05]} Bb7 {[%eval -22,6] [%emt 0:00:05]} 15.
Qd2 {(Qe2) [%eval 46,7] [%emt 0:00:05]} g5 {(e5) [%eval -25,5] [%emt 0:00:05]}
16. Qa5 {(Qd1) [%eval 70,7] [%emt 0:00:05]} g4 {
(Nb6) [%eval -25,5] [%emt 0:00:05]} 17. Qc7 {
(Nfd2) [%eval 113,7] [%emt 0:00:03]} gxf3 {(f5) [%eval -26,5] [%emt 0:00:05]}
18. Qxb7 {[%eval 143,7] [%emt 0:00:02]} f5 {(fxg2) [%eval -21,5] [%emt 0:00:05]
} 19. Nc5 {(Ng3) [%eval 140,7] [%emt 0:00:04]} fxg2 {
[%eval -4,5] [%emt 0:00:05]} 20. Kxg2 {(Rfd1) [%eval 146,7] [%emt 0:00:03]}
Qg5+ {(Rad8) [%eval 60,5] [%emt 0:00:04]} 21. Kh1 {[%eval 191,8] [%emt 0:00:02]
} Nxc5 {[%eval 58,5] [%emt 0:00:04]} 22. Rxc5 {[%eval 216,7] [%emt 0:00:07]}
Rab8 {[%eval 62,5] [%emt 0:00:05]} 23. Qxa7 {
(Qxc6) [%eval 226,7] [%emt 0:00:04]} Ra8 {(Qd8) [%eval 167,5] [%emt 0:00:04]}
24. Qd7 {[%eval 288,7] [%emt 0:00:02]} Rfe8 {
(Rxa2) [%eval 180,5] [%emt 0:00:04]} 25. Qxc6 {[%eval 324,7] [%emt 0:00:03]} b4
{[%eval 218,5] [%emt 0:00:04]} 26. Rg1 {(Bc4) [%eval 331,7] [%emt 0:00:04]} Qd8
{(Qe7) [%eval 197,5] [%emt 0:00:04]} 27. Bc4 {
(Rc2) [%eval 379,7] [%emt 0:00:03]} Qe7 {(Rxa2) [%eval 326,5] [%emt 0:00:04]}
28. Re5 {(Rxf5) [%eval 455,7] [%emt 0:00:03]} Kf8 {
(Qa7) [%eval 346,5] [%emt 0:00:03]} 29. Rxe6 {[%eval 977,7] [%emt 0:00:02]} Qa7
{(Rac8) [%eval 462,5] [%emt 0:00:03]} 30. Rf6+ {
(Qd6+) [%eval 9993,6] [%emt 0:00:02]} Qf7 {[%eval 32763,5] [%emt 0:00:03]} 31.
Rxf7+ {Time [%eval 9995,4] [%emt 0:00:00]} 1-0



[Nicolai Czempin]

Hi Nicolai,

I was not able to install the jar implementation into the fritz9 gui and get it to work with either WB (with wb2uci) or UCI.

However I was able to get Jim's win32 exe to install as a UCI engine. Eden works in the fritz9 gui. Here are 2 games at 2'+1" tc.
Eden lost 2 games to pikoSzachy.

[...]

I tried another game and this time Eden lost on time in a hopeless situation. It also caused the gui to hang and the next game was not able to load.

Thanks for trying it out in Fritz; I'll dig out my version and put it in my test cycle. An alternative to using JA's exe would be to use jlaunch. There's no other way, neither the jar nor the bat works in Fritz.

I'm not quite in the league of PikoSzachy yet. More interesting opponents would be Piranha, Zephyr, Cefap, Roce 0.345, ChessRikus, AtlanChess, ... or anyone from the ChessWar promotion league.

It shouldn't lose on time, so you've probably unearthed a bug. I'll try some test games at the time settings you were using.

As always, thanks for the feedback!