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> Home > The Corewar Newsletters > Core Warrior > Issue #1

Issue 25                                                       April  15, 1996
______________________________________________________________________________
Core Warrior is a weekly newsletter promoting the game of corewar.  Emphasis
is placed on the most active hills--currently the '94 draft hill and the
beginner hill.  Coverage will follow where ever the action is.  If you have
no clue what I'm talking about then check out these five-star internet locals
for more information:

FAQs are available by anonymous FTP from rtfm.mit.edu as
pub/usenet/news.answers/games/corewar-faq.Z
FTP site is: ftp.csua.berkeley.edu /pub/corewar
Web pages are at:
http://www.stormking.com/~koth                  ;Stormking
http://www.ecst.csuchico.edu/~pizza/koth        ;Pizza
http://pauillac.inria.fr/~doligez/corewar/      ;Planar

Newbies should check the stormking page for the FAQ, language specification,
guides, and tutorials.  Post questions to rec.games.corewar.  All new players
are infinitely welcome!

If ftp.csua.berkeley.edu is still out of service, you can download Pmars at
Terry's web page--http://www.infi.net/~wtnewton/corewar/
______________________________________________________________________________
Greetings.

Not many news from the hill this week, but the fall of the 1200+ old Evol
cap, but some interesting code: my Tornado 3.0 and Stepping Stone by Kurt
Franke; I hope mant other authors will publish their ones.

There has been some discussion in the newsgroup about self fights, and not
one spoke if favor for keeping them. Is there a good reason, apart the
historical one, to go on with self fights?

--Beppe Bezzi
______________________________________________________________________________
Current Status of the Internet Pizza Server ICWS '94 Draft Hill:

Hill Specs:
         coresize: 8000
   max. processes: 8000
         duration: after 80,000 cycles, a tie is declared.
max. entry length: 100
 minimum distance: 100
    rounds fought: 200
  instruction set: ICWS '94 Draft

 #  %W/ %L/ %T                      Name               Author   Score     Age
 1  47/ 33/ 20                  Mirage 2        Anton Marsden     161      96
 2  48/ 37/ 15                Scanny Boy        David van Dam     158     160
 3  44/ 33/ 23               Thermite II        Robert Macrae     155    1330
 4  39/ 24/ 37     Walk Like An Egyptian             John K W     154      11
 5  46/ 39/ 15            Stepping Stone          Kurt Franke     154     143
 6  43/ 36/ 21                 Chameleon           M R Bremer     150     801
 7  43/ 35/ 22      Grilled Octopus v0.5         David Boeren     150     546
 8  43/ 36/ 21          Gem of the Ocean              P.Kline     150     199
 9  31/ 15/ 53             Hazy Shade II             John K W     147     289
10  37/ 28/ 35               Blue Funk 5       Steven Morrell     147     474
11  34/ 21/ 45            Impfinity v4g1               Planar     147    1529
12  41/ 38/ 21             Blanket Party             J E Long     145      54
13  29/ 14/ 57                EvolCap XI       John Wilkinson     144      39
14  44/ 45/ 11          Wind-up Toy v0.7          Ian Oversby     143      10
15  36/ 28/ 36                   Barrage        Anton Marsden     143     803
16  39/ 36/ 25                     prova    Maurizio Vittuari     141     306
17  36/ 32/ 32                    Flurry        Anton Marsden     141     291
18  41/ 42/ 17                   Harmony              P.Kline     141      15
19  37/ 33/ 31                   Lithium     John K Wilkinson     141     337
20  37/ 34/ 29               Tornado 3.0                Beppe     139    1131
21  41/ 43/ 16          Wind-up Toy v0.6          Ian Oversby     138      23
22  37/ 39/ 24                    T.N.T.    Maurizio Vittuari     134    1055
23   4/  0/  0                    Test 3          Ian Oversby      12       2
24   4/  0/  0                    Test 4          Ian Oversby      12       1
25   4/  0/  0                   testest           M R Bremer      12       3

Weekly age: 87
New warriors 9  Turnover/age rate 10%
Average age: 386 ( 397 last week, 401 the week before )
Average score: 130 ( 140 last week, 141 the week before ) There are 3 killed
warriors on hill bottom.
The top 25 warriors are represented by 14 authors, JKW and Oversby with 4,
Marsden, with 3.

After dominating the hill last week, Scanny boy loses king position at the
end of this week. There has been a lot of fight for the best spot: Scanny
boy, Mirage 2, Impfinity, Thermite, Blue Funk 5, Grilled octopus all have
been seen in the top.

Pspacer are losing a bit against standard warriors, maybe all new
submissions have some brainwash component to keep'em at bay; perhaps next
week we'll see if this is a new trend or but a fluctuation.

Scanners and qscans are still dominating and replicators are near extiction
having lost both Hector and Marcia, only Barrage remains to represent them.

Reading through ;strategy lines I noticed there are a lot of references to
previous versions, without telling what the warrior is doing; I know what
Blue Funk and Thermite are, as much as most of us, but a beginner maybe puzzled.
______________________________________________________________________________
94 - What's New

 #  %W/ %L/ %T                      Name               Author   Score     Age
 2  33/ 23/ 44     Walk Like An Egyptian             John K W     144       1
16  34/ 38/ 28             Blanket Party             J E Long     131       1
23  22/ 10/ 69                EvolCap XI       John Wilkinson     134       1
14  44/ 45/ 11          Wind-up Toy v0.7          Ian Oversby     143      10
I haven't got this entry
 8  39/ 39/ 22                   Harmony              P.Kline     139       1
18  38/ 43/ 19          Wind-up Toy v0.6          Ian Oversby     132       1
22  38/ 47/ 15                    Test 3          Ian Oversby     130       1
25  21/ 78/  1                    Test 4          Ian Oversby      64       1
16  41/ 47/ 13                   testest           M R Bremer     134       1

Two entries in the top ten: Walk like an Egyptian, a pwarrior by JKW, and
Harmony by Paul Kline.
______________________________________________________________________________
94 - What's No More.

 #  %W/ %L/ %T                      Name               Author   Score     Age
26  39/ 51/ 10                  Memories          Beppe Bezzi     126     159
26  32/ 38/ 31        A Hard Day's Night    Maurizio Vittuari     125     289
26  31/ 48/ 22              No Prisoners             John K W     114       2
26  21/ 14/ 65              Evol Cap 6.6       John Wilkinson     129    1299
26   0/  0/  4          Marcia Trionfale          Beppe Bezzi       4      29
26  32/ 38/ 30             Eternal Flame             John K W     126     128
26  30/ 34/ 35                      test              P.Kline     126      79
26  29/ 32/ 38                  Hector 4          Kurt Franke     126       2
26                                 C I A         Anders Ivner     ???
I haven't got the message with C I A push off

Another millenary warrior leaves us this week: Evol cap 6.6 by JKW
______________________________________________________________________________
94 - What's Old

 #  %W/ %L/ %T                      Name               Author   Score     Age
19  27/ 18/ 54            Impfinity v4g1               Planar     137    1529
 3  41/ 34/ 25               Thermite II        Robert Macrae     147    1330
12  37/ 32/ 31               Tornado 3.0                Beppe     142    1131
10  39/ 35/ 26                    T.N.T.    Maurizio Vittuari     143    1055
 7  34/ 25/ 41                   Barrage        Anton Marsden     144     803
 5  41/ 35/ 24                 Chameleon           M R Bremer     147     801
 6  41/ 37/ 22      Grilled Octopus v0.5         David Boeren     146     546
24  32/ 31/ 37               Blue Funk 5       Steven Morrell     134     474
16  39/ 36/ 25                     prova    Maurizio Vittuari     141     306

T.N.T enters the millenaries club
______________________________________________________________________________
HALL OF FAME
* means the warrior is still active.

Pos    Name                  Author          Age     Strategy
 1  Jack in the box        Beppe Bezzi       1620    P-warrior
 2  Torch t18              P.Kline           1539    Bomber
 3  Impfinity v4g1         Planar            1529 *  Stone/ imp
 4  Frontwards v2          Steven Morrell    1420    One shot scanner
 5  Thermite II            Robert Macrae     1330 *  Qscan -> bomber
 6  quiz                   Schitzo           1262    Scanner/ bomber
 7  Evol Cap 6.6           John Wilkinson    1299    Imp / stone
 8  Tornado 3.0            Beppe Bezzi       1131 *  Bomber
 9  T.N.T.                 Maurizio Vittuari 1055 *  Bomber
10  Iron Gate 1.5          Wayne Sheppard     926    CMP scanner
11  Agony II               Stefan Strack      912    CMP scanner
12  Blue Funk              Steven Morrell     869    Stone/ imp
13  Barrage                Anton Marsden      803 *  Qscan -> replicator
14  Thermite 1.0           Robert Macrae      802    Qscan -> bomber
15  Chameleon              Myer R Bremer      801 *  P-warrior
16  Blue Funk 3            Steven Morrell     766    Stone/ imp
17  Night Train            Karl Lewin         755    Replicator
18  Mirage 1.5             Anton Marsden      736    Scanner/ bomber
19  Blizzard               Anton Marsden      713    Qscan -> replicator
20  HeremScimitar          A.Ivner,P.Kline    666    Bomber
21  La Bomba               Beppe Bezzi        650    Qscan -> replicator
22  myVamp v3.7            Paulsson           643    Vampire
23  Hazy Shade Of Winter   John Wilkinson     616    P-warrior
24  Armory - A5            John Wilkinson     609    P-warrior
25  juliet and paper       Bremer & Bezzi     607    P-warrior

Evol cap 6.6 end its run at 1299 in 7th position. Impfinity is now very
close to Torch and at reach of Jack in the box for the Kothof (King of the
hall of fame)
______________________________________________________________________________
Current Status of the Internet Pizza Server Beginner's Hill:

Hill Specs:
         coresize: 8000
   max. processes: 8000
         duration: after 80,000 cycles, a tie is declared.
max. entry length: 100
 minimum distance: 100
      maximum age: At age 100, warriors are retired.
    rounds fought: 200
  instruction set: ICWS '94 Draft

Last challenge: Mon Apr 15 06:36:53 PDT 1996 

 #  %W/ %L/ %T                      Name               Author   Score     Age
 1  47/ 16/ 37        Vectorfantasy v0.3             basehead     177      51
 2  54/ 34/ 12          Wind-up Toy v0.5          Ian Oversby     174      26
 3  48/ 24/ 29          Fork v0.2-9p/51b    Christoph C. Birk     171      54
 4  51/ 38/ 11        Violent Micro v0.3             basehead     164      39
 5  50/ 39/ 12          C-Seagal II 1.02             jShelton     161      22
 6  49/ 39/ 12                  look-see            Anonymous     160      84
 7  44/ 34/ 21               Ripped v0.1          Ian Oversby     154      10
 8  40/ 26/ 34           Pro-Bomber v0.3        David van Dam     154       1
 9  45/ 42/ 12              Gunslinger 2               Julian     148       9
10  37/ 28/ 34      Hyakutake Perihelion         Scott Manley     146      91
11  39/ 35/ 26              Rabbit v0.2a    Christoph C. Birk     143      57
12  41/ 41/ 18                     AK-47               Julian     140      14
13  44/ 48/  9        Uni Charm Password             jShelton     140      30
14  40/ 42/ 17                   AK-47.1               Julian     138      13
15  39/ 41/ 20                why? V 0.3       bjoern guenzel     138       2
16  39/ 49/ 12          Optma Dwarf v5.3              Phoenix     129      37
17  30/ 30/ 40                Toxin v0.7                Edgar     129      35
18  30/ 45/ 26          Antibodies Mk II        Andrew Fabbro     115      61
19  30/ 46/ 24                    JuJu 7        Andrew Fabbro     114      18
20  30/ 48/ 22                    Napalm            Iain Hogg     111      33
21  32/ 61/  8 Whoops. Didn't mean to se                  JKW     102      15
22   9/  4/  2             Anti Imp V1.1       bjoern guenzel      30      34
23   6/  5/  4 smoju 1 (another pun ...)       bjoern guenzel      24       6
24   2/  4/  2                why? V 0.4       bjoern guenzel       7       4
25   1/  1/  2           Pro-Bomber v0.2        David van Dam       5      17


basehead's Vectorfantasy is the leader, followed by Oversby's Wind up toy,
whose brother v07 is in the pro hill.,Corewarrior list
Not a lot of movement here this week, but 37 challenges; just a lack of new
players or the b-hill is too hard to make?
______________________________________________________________________________
The Hint
Tornado 3.0 by Beppe Bezzi

As announced here is Tornado 3.0a, exacly as is on the 94 hill, after all
the small flaw I was afraid of isn't that easy to spot, after all I spent
more time on it than anyone else.

It's a 60%c using, OTOH, tornado engine. Main differences from Jack's
version, even if it's perhaps easier to find resemblances, :-) are:
- It's self splitting, for more robustness.
- Uses djn stream for further protection against one shot scanners.
- Has a multipass external clear
- Uses a decoymaker instead of the boot
- Uses a mov {step,1 bomb instead of a simple dat.

Tornado enters clear self hitting with a spl #0 bomb and goes further on
bombing, slower, until the the clear starves the bomber, a protection
against Clisson, even if Clisson were far from coming at Tornado birth.

The step may look non optimal, but it's the best scoring one I found
beetween all 'not too large' mod 5 numbers, apart that I lost my faith in
optimal number when a version of Memories with a step optimal for coresize
55440, an error using Corestep, scored better than any other optimal for
coresize 8000 on the 94 hill. Maybe Steven, our optima number theorist,
knows the reason.
----
;redcode-94 
;name Tornado 3.0
;author Beppe
;assert CORESIZE==8000
;strategy Fast 60% c bomber
;strategy v 3.0a new clear, paper and imp protection
;strategy decoymaker instead of boot
;assert CORESIZE == 8000
;kill Tornado

dms     equ     25
dmd     equ     -2500
step    equ     -45               
djnoff  equ     -2205
;---
A       equ     43
B       equ     24

a for 13
	mov     >dmd-dms*a,{dmd-dms*(a+15)      
rof
;-break
       JMP.B    bombs,  >2975     

for MAXLENGTH-CURLINE-A
	spl    #0,0
rof


gate    dat     -100,   100
	dat    <-10,   <2667           ;anti imp bit
	dat     -4000,   djmp-gate+2
stclr   spl     #-3000,  djmp-gate+2
clear   mov     @djmp,  >gate
	mov     @djmp,  >gate
djmp    djn.b   clear,  {stclr
	dat     0,0
	dat     0,0

for B
	dat     0,0
rof


bombs   spl     #step,  -step           ;hit spl
start1  sub     incr,   @b1           
stone   mov     (0*step)+jump,*(1*step)+jump
b2      mov     bombs,  @stone
b1      mov     bombm,  *stone
jump    djn.f   start1, {djnoff         ;hit by spl
	jmp     stclr,  0     
incr    dat     >-3*step,>-3*step      
last
bombm   mov     {step,   1



______________________________________________________________________________
Extra Extra
Stepping Stone by Kurt Franke


Stepping Stone is the result of ideas I had while writing System Trap.

The main warrior is a 2/3 c vamp/scan in the spirit of myVamp.  The pit is
primarily not for stunning, but to notify my program processes have been
trapped, to brainwash, and to self destruct.  The first line of the pit
causes Stepping Stone to jump to the core clear. 

The quick scan has an interesting attack.  It is a 3/5 c vamp using
tornado style bombing.  Only one instruction is a jump back to the trap.
All the other jmp's go indirectly back to the original one pointing
to the trap.  This isn't practical for a general attack, but seems to
work ok for the qscan attack.  The quick scan vamp has its own pit.
The first line of the qscan pit, when executed, causes Stepping Stone to
go directly to the core clear without booting.  Maybe this saves a few
rounds where the boot code or vampire have been hit by a dat, I didn't
really test.  What does seem to be true is adding the quickscan
increased my score nearly 10 points.  This version scored about 3 or
4 points higher than the handshaking version.

It seems I could eliminate a line by combining the increment
value with the add line to get

  add.f #-INCR, $INCR

and then putting jbomb INCR places forward.  I tried this but it didn't
work well (don't you hate it when scores don't improve after making what
really seems to be an improvement?).  I'll look at it again later perhaps.
I have made other minor "improvements", but this is the one on the hill.
Oh, except I changed the qscan places slightly so you can't murder me by 
reversing them.

- Kurt

/-----------------

;redcode-94
;assert CORESIZE == 8000

;author Kurt Franke
;name Stepping Stone
;kill Stepping Stone

;strategy Quick scan -> Vampire (version 9h)

;components (to help Planar) :
; quickscan, boot, vamp, scan, stun, clear, pspace(brainwash)

;; - - - - - - - - - - - boot parameters - - - - - - - - - - - - - - - -

				;; reference address for boot distances
REF		equ	(vamp-3)

				;; first define the places things will go
BVAMP		equ	(3+282*10+REF)
BSTEP		equ	(6+295*10+REF)
BJUMP		equ	(1+298*10+REF)
BCLEAR		equ	(4+367*10+REF)
BPIT		equ	(5+67*10+REF)
		;;	 ^
		;;	 +---- 	don't change this column of numbers
		;; 		they are magic to avoid self-bombing

				;; now define constants for use in the code
				;; (these are to be used when refering to a
				;;  line within that block of code)
CVAMP		equ	(BVAMP-vamp)
CCLEAR		equ	(BCLEAR-dbomb2+space)
CTARGET		equ	(BVAMP-vamp+target)
ADJUST		equ	(CCLEAR-CTARGET)

FIRST		equ	0
INC		equ	110	;; mod 10 step for mod 5 vamp/scan
COUNT		equ	8*5

;; - - - - - - - - - - - the vampire code - - - - - - - - - - - - - - -

vamp	add.f	$vamp+6,	$(BJUMP-CVAMP)	;; incr will be at vamp+6
	mov.i	@0,		@(BJUMP-CVAMP)
	jmz.a	*target,	*(BJUMP-CVAMP)
	mov.i	@0,		*(BJUMP-CVAMP)	;; a-field needs to be 0
target	djn	vamp,		#COUNT
	jmp	(CCLEAR-CVAMP)
	
step	jmp	@0,		BPIT-BSTEP	;; a-field needs to be 0

jbomb	jmp	@BSTEP-BJUMP-FIRST,	$FIRST	;; indirect jump to pit

CPTR		equ	(dbomb2-1)

dbomb2	dat	<2667, <2*2667+1
dbomb	dat	<-15, #10
space	spl	#0, #10				;; a-field needs to be 0
clear	mov	@cloop, >CPTR
	mov	@cloop, >CPTR
cloop	djn.b	$clear, {space

incr	dat	$-INC,		$INC

pit	mov.a	#ADJUST,	$CTARGET-BPIT
	spl	#0,		$0		;; a-field needs to be 0
	mov	2,		>1
	stp	#0,		$BCLEAR-BPIT+36

;; - - - - - - - - - - - - - boot code - - - - - - - - - - - - - - - - - -

pboot	mov	$pit+3, BPIT+3
	for	3
	  mov   {pboot, <pboot
	rof

cboot	mov	$dbomb2+5, BCLEAR+5
	for	5
	  mov	{cboot, <cboot
	rof
	
	mov	$step, BSTEP

	mov	$jbomb, BJUMP

	mov	$incr, BVAMP+6
vboot	mov	$vamp+5, BVAMP+5
	for	5
	  mov	{vboot, <vboot
	rof
	
	mov	$0, $cboot

	spl	@vboot

	mov	$0, $vboot			;; erase important pointers

	dat	$0, $0

;; - - - - - - - - - - - - - quick scan - - - - - - - - - - - - - - - - - -

QINC		equ	6
QCOUNT		equ	7

qjump	jmp	$qpit-found, #0
qstep1	jmp	*QINC, #-2*QINC
qstep2	jmp	*-2*QINC, #-QINC

start       ;'94 scan (from FAQ)
s1	for 4
	  sne.x	start+400*(s1+12), start+400*(s1+12)+100
	  seq.x	start+400*(s1+12)+200, start+400*(s1+12)+300
	  mov	#start+400*(s1+12)-found, $found
	rof
	jmn	which, $found

s2	for 4
	  sne.x	start+400*(s2+6), start+400*(s2+6)+100
	  seq.x	start+400*(s2+6)+200, start+400*(s2+6)+300
	  mov	#start+400*(s2+6)-found-100, $found
	rof
	jmn	which, $found

s3	for 4
	  sne.x	start+400*(s3+2), start+400*(s3+2)+100
	  seq.x	start+400*(s3+2)+200, start+400*(s3+2)+300
	  mov	#start+400*(s3+2)-found-100, $found
	rof

	jmz	pboot, $found
	add	#100, $found
which	jmz.f	-1, @found
	sub.ba	$found, $qjump
	mov	$qjump, @found
	mov.ba	$found, $found

qloop	sub.f	$qstep1, $found
	mov	$qstep2, @found
	mov	$qstep1, *found
found	mov	$0, @0
	djn	qloop, #QCOUNT
launch	jmp	pboot, #space

qpit	mov.ba	$launch, $launch
qerase	spl	#0, #start
	mov	$10, >qerase
	jmp	BPIT

;; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	end	start


______________________________________________________________________________
Questions?  Concerns?  Comments?  Complaints?  Mail them to people who care.
authors: Beppe Bezzi <bezzi@nemo.it> or Myer Bremer <bremermr@ecn.purdue.edu>
2002-2005 corewar.info. Logo C. Schmidt