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

Issue 35                                                        June 24, 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 unreachable, you can download pMARS at:
Terry's web page--http://www.infi.net/~wtnewton/corewar/
Planar fpt site--ftp://ftp.inria.fr/INRIA/Projects/para/doligez/cw/pmars
Fechter ftp site--ftp://members.aol.com/ofechner/corewar
______________________________________________________________________________
Greetings.

Pizza hill changes are going to be implemented, Thos is at work and new
feature will soon be available, mail your comments, proposals and bug finds
to <sd@ecst.csuchico.edu>

J.K. Lewis and Andrew Fabbro have opened a new hill on their server.
Presently they run a limited process hill with all other stats like 94 hill,
you can play and help them testing sending your warriors to:
<koth@wastedyouth.us.itd.umich.edu> with a ;redcode-94lp header. The hill
implements many features, to get more info send a mail with a subject of
'help' (no quotation marks) to the above address.

I hope the hill masters will agree for a common syntax of commands, having a
different one in every server is sure confusing.

--Beppe Bezzi
______________________________________________________________________________
New Pizza features

 o Remove self fights on all hills that use pspace.

 o Add the "test" command to decrease artificial aging of the hill.
   I think the best (and easiest) way to do this would be as an
   argument to the ";redcode" command like "quiet" and "verbose" are
   now.  ";redcode test" would challenge all the warriors on the hill
   (only 100 times?), but the results would be discarded.  This way
   you could see how your changes affect your performance against all
   the warriors on the hill, but you get the results back twice as
   fast.

 o Add the ";password" command, to make it harder to forge ";kill"
   commands.

 o Make ";name" commands mandatory, and make blank ";kill" commands
   illegal.
  
 o Add the ";url" and ";show" commands for web access.  ";url" is
   pretty much self explanatory, but ";show" will be used to customize
   how much info on your warrior you want to make public.  "[no]source"
   and "[no]score" are two possible arguments to add.

 o Add the ";change [warrior name]" command to allow you to change info
   in your warrior without having to kill it and resubmit it.  If you
   wanted to make it "quiet" while you go on vacation, or change the
   ";url", just send one piece of mail with ";change" in it.  This would
   do a substring match like ";kill", and any other commands in the mail
   would be changed in the warrior.  Does this make sense?

Any other ideas, or comments on the above proposals?

Thos

______________________________________________________________________________
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  41/ 41/ 14                      Goldfinch                P.Kline  137     1
 2  37/ 36/ 23                      Yogi Bear                P.Kline  134     3
 3  31/ 26/ 39             Jack in the box II            Beppe Bezzi  133   156
 4  35/ 35/ 26                    Jo Clark II            Ian Oversby  132   157
 5  20/  5/ 71                  The Avalanche         John Wilkinson  131    22
 6  35/ 36/ 25                        Twister            Beppe Bezzi  131   253
 7  27/ 20/ 50                        Rosebud                  Beppe  130   472
 8  30/ 28/ 38                      test jb21            Beppe Bezzi  129     4
 9  21/ 10/ 65                         ompega         Steven Morrell  129   150
10  35/ 39/ 22                         Blur 2          Anton Marsden  128     5
11  37/ 42/ 17                      myVamp5.1               Paulsson  128    49
12  25/ 18/ 53                   rhodium v1.3     Martin M. Pedersen  128    24
13  34/ 37/ 26                     T.N.T. pro      Maurizio Vittuari  127   517
14  37/ 44/ 15                  HopScotch 1.6          Robert Macrae  126   266
15  26/ 23/ 48                    blue candle         bjoern guenzel  126   386
16  32/ 35/ 29                    Thermite II          Robert Macrae  125  2138
17  36/ 44/ 16                 Stepping Stone            Kurt Franke  124   951
18  31/ 35/ 30               Scotch Broth 1.2          Robert Macrae  124    48
19  27/ 27/ 42                 the historian          bjoern guenzel  124   272
20  30/ 33/ 34                   Thalamus mod                  Edgar  123   200
21  32/ 37/ 27                        Goliath          David van Dam  123    19
22  30/ 35/ 31                           test               Maurizio  123   197
23  22/ 17/ 58                  Hazy Shade II               John K W  123  1097
24  30/ 34/ 32                     * Satura *         bjoern guenzel  122    10
25  31/ 37/ 29                         test E                P.Kline  121     7

Weekly age: 108 ( 67 last week, 47 the week before )
New warriors: 11  Turnover/age rate 10%
Average age:    296 ( 269 last week, 306 the week before )
Average score:  127 ( 133 last week, 140 the week before )
The top 25 warriors are represented by 14 authors: Bezzi with 4, guenzel,
Macrae and Kline with 3, Vittuari and JKW with 2.

A burst of activity on the hill, after some quiet weeks this one we had more
than 100 challenges.

King Report:  Jack in the box held king position for the first days, then
come some rumble, with many warriors alternating at the top, until Paul
Kline set thing in his favourite manner, placing strongly his new pspacer
Goldfinch with a good lead over the second, his other pspacer Yogi bear.

Blur was pushed off but a new version toke its place, in a very good
position, adding to the number of 'versions number two'; presently there are
five plus TNT pro that can be considered a version two itself too. All but
Jo Clark are childrens of successful warriors.

Replicator are back and holding the hill in fifth and twelfth position, with
JKW Avalanche and rhodium by the newcomer Petersen. The coming of paper
caused the fall of some bombers holding top positions last weeks.
______________________________________________________________________________
94 - What's New

 #  %W/ %L/ %T                      Name               Author   Score     Age
 1  41/ 41/ 14                      Goldfinch                P.Kline  137     1
 2  37/ 36/ 23                      Yogi Bear                P.Kline  134     3
 5  20/  5/ 71                  The Avalanche         John Wilkinson  131    22
 8  30/ 28/ 38                      test jb21            Beppe Bezzi  129     4
10  35/ 39/ 22                         Blur 2          Anton Marsden  128     5
11  37/ 42/ 17                      myVamp5.1               Paulsson  128    49
12  25/ 18/ 53                   rhodium v1.3     Martin M. Pedersen  128    24
18  31/ 35/ 30               Scotch Broth 1.2          Robert Macrae  124    48
21  32/ 37/ 27                        Goliath          David van Dam  123    19
24  30/ 34/ 32                     * Satura *         bjoern guenzel  122    10
25  31/ 37/ 29                         test E                P.Kline  121     7

Many new interesting warriors did the hill this week, half of the top ten
scorers are new.
______________________________________________________________________________
94 - What's No More

 #  %W/ %L/ %T                      Name               Author   Score     Age
26   1/  1/  2                 Armory II             John K W       5      55
26   1/  1/  2                    test 1       bjoern guenzel       5      28
26   2/  1/  1           Versatility 1.0   Ross Morgan-Linial       7      18
26  32/ 38/ 31                   stoninc             Maurizio     126     301
26   2/  1/  0                Scimitar 2              P.Kline       7      35
26   2/  1/  1             jupiter crash       bjoern guenzel       6      30
26  34/ 43/ 23                      Blur        Anton Marsden     124     463
26   1/  1/  1                 myVamp5.0             Paulsson       5     108
26   1/  1/  1             Test bb v1.41        David van Dam       5     106
26  21/ 23/ 56              Atom Smasher        Anton Marsden     120     172
26  32/ 41/ 27           Versatility 1.2   Ross Morgan-Linial     123     105

Marsden's Blur is the the oldest warrior pushed off; it has been quickly
replaced by a new, more effective, version.
______________________________________________________________________________
94 - What's Old

 #  %W/ %L/ %T                      Name               Author   Score     Age
16  32/ 35/ 29                Thermite II          Robert Macrae   125   2138
22  22/ 17/ 58              Hazy Shade II               John K W   123   1097
17  36/ 44/ 16             Stepping Stone            Kurt Franke   124    951
13  34/ 37/ 26                 T.N.T. pro      Maurizio Vittuari   127    517
 8  27/ 20/ 50                    Rosebud                  Beppe   130    472
15  26/ 23/ 48                blue candle         bjoern guenzel   126    386

Blur is no more, blue candle enters. Hazy shade II enters the over 1000 group.
_____________________________________________________________________________
HALL OF FAME
* means the warrior is still active.

Pos    Name                  Author          Age     Strategy
 1  Thermite II            Robert Macrae     2138 *  Qscan -> bomber
 2  Impfinity v4g1         Planar            1993    Stone/ imp
 3  Jack in the box        Beppe Bezzi       1620    P-warrior
 4  Tornado 3.0            Beppe Bezzi       1567    Bomber
 5  Torch t18              P.Kline           1539    Bomber
 6  Chameleon              Myer R Bremer     1437    P-warrior
 7  Frontwards v2          Steven Morrell    1420    One shot scanner
 8  Evol Cap 6.6           John Wilkinson    1299    Imp / stone
 9  quiz                   Schitzo           1262    Scanner/ bomber
10  T.N.T.                 Maurizio Vittuari 1204    Bomber
11  Grilled Octopus v0.5   David Boeren      1154    P-warrior
12  Hazy Shade II          John Wilkinson    1097 *  P-warrior
13  Stepping Stone         Kurt Franke        951 *  Qscan -> Vampire
14  Iron Gate 1.5          Wayne Sheppard     926    CMP scanner
15  Agony II               Stefan Strack      912    CMP scanner
16  Barrage                Anton Marsden      876    Qscan -> replicator
17  Blue Funk              Steven Morrell     869    Stone/ imp
18  Flurry                 Anton Marsden      835    Qscan -> pwarrior
19  Thermite 1.0           Robert Macrae      802    Qscan -> bomber
20  Blue Funk 3            Steven Morrell     766    Stone/ imp
21  Night Train            Karl Lewin         755    Replicator
22  Mirage 1.5             Anton Marsden      736    Scanner/ bomber
23  Blizzard               Anton Marsden      713    Qscan -> replicator
24  HeremScimitar          A.Ivner,P.Kline    666    Bomber
25  La Bomba               Beppe Bezzi        650    Qscan -> replicator

Thermite passes the 2100 and is still in good health even if dropping a bit,
Hazy shade resists and passes the 1000 milestone. Stepping stone gains some
positions and is now near 1000 age. 
But three living warriors are in the hall, compared to the seven of last
month; perhaps scores are setting, after the increment for the introduction
of five more spots, and making the hall is getting harder.
______________________________________________________________________________
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
 #  %W/ %L/ %T                           Name                 Author Score  Age
 1  45/ 28/ 23                Versatility 1.2     Ross Morgan-Linial  158    14
 2  48/ 36/ 12                       Thalamus                  Edgar  156    71
 3  46/ 37/ 13                 Saboteur v0.3p                   shar  152    21
 4  43/ 31/ 23                           Mace                  Edgar  151    91
 5  43/ 41/ 12                       Thalamus                  Edgar  141    47
 6  28/ 14/ 55                     test-paper     Martin M. Pedersen  138    10
 7  40/ 41/ 15                      hyper 1.0                   Ross  135    19
 8  41/ 42/ 13                         Sapper          Andrew Fabbro  135    97
 9  26/ 13/ 57                   rhodium v1.3     Martin M. Pedersen  135     6
10  31/ 24/ 41              Fork v0.1-13p (i)      Christoph C. Birk  135    78
11  40/ 43/ 13                    3-clear 0.6         Ilmari Karonen  133    22
12  28/ 22/ 46                  Cannon Fodder             I. Karonen  130     1
13  40/ 46/ 11            Not Very Pretty 2.0     Ross Morgan-Linial  130    45
14  28/ 24/ 43                   Hunter V 0.9              O.Fechner  129    72
15  16/  4/ 76                 Nematode v1.2b         Jonathan Stott  125     2
16  33/ 38/ 24                           test             Justin Kao  124    11
17  25/ 22/ 49                      Avenger I         Oliver Fechner  124    18
18  31/ 40/ 25                    3-clear 0.5             I. Karonen  118    36
19  28/ 37/ 30             Yet Another Try 1i             Justin Kao  116    43
20  33/ 49/ 14             Switch Hitter 0.3t     Ross Morgan-Linial  114    26
21  24/ 30/ 43                  Hunter V 0.8               O.Fechner  114    93
22  29/ 41/ 26           Yet Another Try 1.0b             Justin Kao  114    56
23  30/ 43/ 23           Extremely Prejudiced           Scott Manley  112    98
24  27/ 41/ 28                 1,000lb weight     Ross Morgan-Linial  109    66
25  25/ 37/ 34                        rhodium     Martin M. Pedersen  108     8

But 12 challenges, little is changed. The top authors are the same even if
they exchanged the king position
______________________________________________________________________________
The hint
A new p-switcher
by Paul Kline

A colorful variety of p-switching mechanisms are sprouting this Spring, and
it would be nice if someone would round them all up for comparison.  Also
nice if people would POST a few :-)

A simple, fast switch-on-loss routine for two p-components might
look like this:

pflag     equ    (somenumber.lt.500)
pGold     ldp.ab #0,#0                ; get results of last battle
          ldp.a  #pflag  ,pGold       ; retrieve attempted strategy
          add.a  #1      ,@pGold      ; if a loss, increment strategy
          mod.a  #2      ,pGold       ; safeguard against brainwashing
          stp.ab pGold   ,#pflag      ; store current strategy
          jmz.a  select1 ,pGold       ; select strategy 1
          jmp    select2              ; select strategy 2

(The last jmp is unnecessary if strategy 2 immediately follows)

A powerful adaptation of the routine can be made with no extra
instructions.  By increasing the MOD number we have an assymetric
switcher, by which the second strategy is selected more often than
the first.  This can be very helpful in pairing up a strong
all-purpose warrior like Torch, with a special-purpose warrior
like Clisson.  Like many fast programs with spl-dat clears, Torch
is vulnerable to a stone, which is in turn highly vulnerable to Clisson.
Using an assymetric switcher to select Torch most frequently gives
the best results against a variety of opponents, and the infrequent
Clission strategy breaks up a protracted series of stone attacks.

This is the switcher used by Goldfinch which pairs a one-shot 
scanner w/multipass clear, with Clisson's dodger.

Paul Kline
pk6811s@acad.drake.edu

______________________________________________________________________________
Extra Extra
Twister
by Beppe Bezzi

Tornado is, beetween my warriors,one my favourites and, being a very
flexible bombing engine, I like a lot to tweak  and improve it, testing new
bombs and variations. When Tornado 3.0, that had a success beyond my
expectations, was near the bottom of the hill, a long time indeed :-), I
tried to fix some problems that caused its fall and I coded v 3.3 that's the
one included in Twister. Jack uses a slightly different version but you can
fit this one in the old Jack, using but one paper module, and results won't
differ too much from those on the hill (let me something to publish next
week :-)
The bombs are common dat <1,{1 deadly against clears and slowing djn stream
users, intermixed with one spl #xx to allow self bombing to enter the core
clear. 
Worth noting are the pattern, not exacly mod 5 but slightly translated, such
way it's more difficult for a one shot scanner to slip through my bombs
without noticing them, and the djn protection, jmz.b start,#0 stolen from Torch.

The qscan is rather similar to the one in Stepping Stone, being only a bit
slower overall even if with a better bomb distribution. I coded it from the
warrior I sent to J K Lewis tournament, a thing that proved deadly, I won 13
rounds alone, but too weak. It's a 50%c vamp engine dropping one far jump to
the pit and two near jumps through and to the far jump in a six instructions
loop, something like that:

jn   jmp     *qqstep,  qqstep                        ;jump near
jf   jmp     -bombn+pit-(3*qqstep)-qdisp,-qqstep     ;jump far

jn ..[qqstep cells].. jn .. [qqstep cells] .. jf

The first jn jumps to jf using a-field of the second jn, the other jumps go
to the pit.
The pit is a standard self destructing, brainwashing pit.


;redcode-94
;name Twister
;author Beppe Bezzi
;strategy qscan -> Tornado bomber
;assert CORESIZE == 8000
;kill Twister

step    equ     -45               
away    equ     4000+2  ;mod 5 +2
gate1   equ     (gate-4)

org     startq 


qstep   equ     6
qrounds equ     8
qdisp   equ     -qstep*(qrounds*3/2-1)-60
qqstep  equ     qstep*qrounds
bigst   equ     100                     ;or something more :-)
qstart  equ     startq+145
qst     equ     qstart -(4*bigst)

pstep   equ     40
spacer  equ     4
cldst   equ     (bclr-bgate+spacer+5)


pit     spl     4
pit1    mov     -3,     <1300
	spl     pit1
	spl     pit1
	stp.b   #0,     @pit1
	jmp     pit1

;----Qscan

;don't ever think it's the right qscan pattern :-)

startq
s3 for 4
	sne.i   qst+4*bigst*(s3+0), qst+4*bigst*(s3+0)+bigst*1
	seq.i   qst+4*bigst*(s3+0)+bigst*2, qst+4*bigst*(s3+0)+bigst*3
	mov.ab  #qst+4*bigst*(s3+0)-found, found
     rof
	jmn.b   which,  found
s2 for 4
	sne.i   qst+4*bigst*(s2+5), qst+4*bigst*(s2+5)+bigst*1
	seq.i   qst+4*bigst*(s2+5)+bigst*2, qst+4*bigst*(s2+5)+bigst*3
	mov.ab  #qst+4*bigst*(s2+5)-found, found
     rof
	jmn.b   which,  found
s1 for 4
	sne.i   qst+4*bigst*(s1+10), qst+4*bigst*(s1+10)+bigst*1
	seq.i   qst+4*bigst*(s1+10)+bigst*2, qst+4*bigst*(s1+10)+bigst*3  
	mov.ab  #qst+4*bigst*(s1+10)-found, found
     rof
	jmn  which,   found

which
found   jmz.b   boot,   #0      ;Pyramid decoding
	add.b   found,  pt2
	sne.i   @found, @pt2  
	add.ab  #(bigst*2),found
	sne.i   -100,   @found
	add.ab  #bigst, found
qattack                           ;found.b punta il bersaglio       
	mov     bombm,	@found    ;dat bomb found position

	add.ba  found,  qstone    ;\
	add.b   found,  qstone    ; >setup vamp pointers
	sub.ba  found,  bombf     ;/

;---vamp attack ---

qb1      mov     bombn,  *qstone
qb2      mov     bombf,  @qstone
qstone   mov     (1*qqstep)+bombn+qdisp,@(3*qqstep)+bombn+qdisp
qstart1  sub     qincr,   @qb1
	add.a   qincr,   bombf       
qjump   djn.b   qb1,    #qrounds
	jmp     boot

bombn   jmp     *qqstep,  qqstep
qincr   dat     >-1*qstep,>-1*qstep      

bombf   jmp     -bombn+pit-(3*qqstep)-qdisp,-qqstep

for 5
	dat     0,0
rof

;--- Tornado

start
boot

	mov     gate,   }pt2
	mov     gate,   *pt2
	mov     last,   <pt1
	spl     1,      1
	mov     {pt1,   <pt1
	mov     {pt1,   <pt1
	mov     {pt1,   <pt1
	mov     {pt1,   <pt1
	mov     {pt1,   <pt1

go      djn.b   @pt1,   #2      ;start Tornado
	mov     gate,   <pt1
pt1     div.f   #last,#last+1+away
pt2     div.f   #gate+away-5,#bigst+found
	
	dat     -25,    last-gate1+5
warr
gate    
	dat     -25,    last-gate1+15
bombs   spl     #(step+1),  -step           ;hit spl
start1  sub     incr,   @b1           
stone   mov     (0*step)+jump,*(1*step)+jump
b2      mov     bombs,  @stone
b1      mov     bombm,  *stone
jump    jmz.b   start1, #0         ;hit by spl
clr     mov     @djmp,  >gate1
	mov     @djmp,  >gate1
djmp    djn.b   clr,    {bombs
incr    dat     >-3*step,>-3*step      
last

bombm   dat     <1,     {1

shift   dat     #40,    #40     


______________________________________________________________________________

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