Schachcomputer.info Community - Tipp: Mac Hack VI

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Hi,
as it plays fast on modern hardware even at tournament setting, I gave a try to more depth and/or width. Sadly the deeper/larger the search, the higher the probability for a crash with a 'Push down list overflow' msg.

So I sticked to the usual tournament settings.

But a crash can still happen. I faced one after five games played without any issue, thus not a so often case.

The good news is I could easily resume the position and start a lower search (depth 5 instead of 6), get the Mac Hack move, increase again the search and complete the full game without anymore issue.

How to? I copied the TTY output of the game to a text editor to empty the unwanted output characters (such as _W prefix for moves played by the program as White), removed the play command (PW or PB) to ensure "referee mode", then pasted back into a new/clean CHESS program run. The CMD Windows lets you paste several lines that will feed the Mac Hack session. You then just need to set the appropriate level and enter PW or PB command to resume the search.

Should Michael (or anyone) want to test/reproduce, here is a TTY input for the position that crashed using tournament level:

Code:

SETD 6

SETW 15 15 9 9 7

P/K2-K4

P K4

N/KN1-KB3

N KB3

P/Q2-Q4

NXP

B/KB1-Q3

P Q4

N/KB3*P/K5

B Q3

O-O

O-O

P/QB2-QB4

P QB3

P/QB4*P/Q5

PXP

Q/Q1-QB2

P B4

N/QN1-Q2

B K3

N/Q2-KB3

N R3

Q/QB2-QN3

N N5

B/Q3-K2

R B1

PW

?

Just change the first line to SETD 5 for a safe run.

If any useful, the standard notation:

[Event "?"]
[Site "?"]
[Date "2025.03.01"]
[Round "?"]
[White "Mack Hack VI"]
[Black "opponent"]
[Result "*"]
[ECO "C43"]

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.O-O O-O 7.c4 c6 8.cxd5 cxd5 9.Qc2 f5 10.Nd2 Be6 11.Ndf3 Na6 12.Qb3 Nb4 13.Be2 Rc8 {program crashed} *

MfG,
Tibono

Zitieren:

Zitat von mclane (Beitrag 131560)

Ist ja schwieriger als Schach spielen ;-)

Ja, das sehe ich genauso :D
Habe es zum Laufen gebracht, aber werde es wohl nicht weiter untersuchen.
Da gibt es noch sooo vieles anderes, was auf meine zeitliche Zuwendung wartet :)

Aber nochmals vielen Dank für das alte Schätzchen.
Beste Brüße
Michael

mit LIST kann man sich Commandos / Parameter anzeigen lassen.

Code:

PSVD=1

M

U

SMVD=0

BD

SE=1

RESET

PG

PW

PB

PS

PN

PNT-0

WALLP-0

SETW

SETD-6

SETF-2

SETC=2

DRAW

HASH=1

BOOK=1

UREAD

SETSD=2

SETSSD=0

FILE

UWRITE

SAVE

RS

SPOT

CBOOK

TRACE

RBOOK

LIST

TPC

KHS=1

SFS=1

Eine spätere Version hat hier eine 'Dokumentation':
https://github.com/larsbrinkhoff/its...Greenblatt.pdf

Spannend ist zum Beispiel:
SMVD 1
(give analysis of principal variations stemming from each plausible move)
PSVD 1
(print principal variation and its value..)

M - einen Move machen lassen.
PS - automatische Partie spielen
U - Undo move

etc.

Ich finds jedenfalls höchst interessant, habe auch schon Partien in der desktriptiven Notation gespielt ;)

Hier mal eine Partie Sargon 2.5 (ohne Pondern) gegen Mac Hack VI auf Turnierstufe. Sargon kam arg in Bedrängnis.

[Event "MessExtra"]
[Date "2025.03.02"]
[White "Boris 2.5 noPonder"]
[Black "MacHackVI"]
[Result "0-1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Bh3 Bc5 5. Nf3 d6 6. Bxc8 Qxc8 7. d4
exd4 8. Nxd4 Qh3 9. Qd3 O-O 10. Nf5 Nbd7 11. Nxd6 Qg2 12. Rf1 Ne5 13. Qd1 Nfg4
14. Be3 Bxe3 15. Nce4 Nxh2 16. fxe3 Qxf1+ 17. Kd2 Qxd1+ 18. Rxd1 Rad8 19. Kc3
Nhg4 20. Rd2 Nxe3 21. Nxb7 Rxd2 22. Nxd2 Rb8 23. Nd6 Nd1+ 24. Kd4 Rxb2 25. N6e4
f5 26. Kxe5 fxe4 27. Nxe4 Rxe2 28. Kd4 Rxe4+ 29. Kxe4 Nc3+ 30. Kd4 Nxa2 31. Kc5
h5 32. Kxc6 Nc3 33. Kb7 Ne4 34. g4 hxg4 35. Kxa7 g3 36. Kb6 g2 37. Kc6 g1=Q 38.
Kd5 Nc3+ 39. Kc6 g5 40. c5 g4 41. Kd6 Ne4+ 42. Ke5 Nxc5 43. Kd5 Qe3 44. Kc4 g3
45. Kb5 g2 46. Kb6 Nd7+ 47. Kb5 Qe4 48. Ka5 g1=Q 49. Kb5 Qb6# 0-1