shatowolf's post in KOE script help was marked as the answer
November 20, 2013
Just add those and recompile, Credit goes to : ~AnnieRuru~
Don't forget to add these: and remember to add this line in db\castle_db.txt
100,guild_vs1,koe,koe,1
Add this patch
Index: battle.c
===================================================================
--- battle.c (revision 14826)
+++ battle.c (working copy)
@@ -3341,6 +3341,13 @@
if( (s_bl = battle_get_master(src)) == NULL )
s_bl = src;
+ if ( s_bl->type == BL_PC && t_bl->type == BL_MOB ) {
+ struct map_session_data *sd = BL_CAST(BL_PC, s_bl);
+ if ( ( ((TBL_MOB*)target)->class_ == 1288 && !strcmp( mapindex_id2name(sd->mapindex), "guild_vs1" ) ) &&
+ ( sd->status.guild_id == mapreg_readreg( add_str("$koegid") ) || battle_getcurrentskill(src) > 0 ) )
+ return 0;
+ }
+
switch( target->type )
{ // Checks on actual target
case BL_PC:
Index: battle.h
===================================================================
--- battle.h (revision 14826)
+++ battle.h (working copy)
@@ -3,6 +3,7 @@
#ifndef _BATTLE_H_
#define _BATTLE_H_
+#include "mapreg.h"
// state of a single attack attempt; used in flee/def penalty calculations when mobbed
typedef enum damage_lv {