on *:text:!dd *:#USDicee: {
  ; You can remove the first two IF lines if you don't care about checking if the nicks are on the channel.
  if ($nick isvoice #dicing_ttg || $nick isreg #dicing_ttg) { msg $chan Only halfop or higher can start a duel. | return }
  if ($2 !ison $chan) { msg $chan $2 is not a valid nick. | halt }
  if ($3 !ison $chan) { msg $chan $3 is not a valid nick. | halt }
  if (!$4) { msg $chan Invalid format.  Use: !dd nick1 nick2 reward | halt }
  set %dd $2 $3 $4
  msg $chan 8,1 Dice duel between $2 and $3 ; Type !roll.
    .timerDD 1 300 EndDD
}
on *:text:!roll:#USDicee: {
  if (!%dd) { msg $chan 8,1 No duel in progress. | halt }
  if (!$istok(%dd,$nick,32)) { msg $chan You are not one of the duelists. | halt }
  if ($($+(%,ddr.,$nick),2)) { msg $chan You have already rolled. | halt }
  var %r = $rand(2,12), %d1 = $gettok(%dd,1,32), %d2 = $gettok(%dd,2,32), %p = $gettok(%dd,3,32)
  set %ddr. $+ $nick %r
  msg $chan 8,1 $nick rolled a %r $+ .
  var %r1 = $($+(%,ddr.,$gettok(%dd,1,32)),2), %r2 = $($+(%,ddr.,$gettok(%dd,2,32)),2)
  if (%r1 && %r2) {
    if (%r1 > %r2) { msg $chan 8,1 %d1 won the %p pot with a %r1 $+ - $+ %r2 $+ . }
    elseif (%r2 > %r1) { msg $chan 8,1 %d2 won the %p pot with a %r2 $+ - $+ %r1 $+ . }
    else { msg $chan 8,1 %d1 and %d2 tied with a %r1 $+ - $+ %r2 $+ . }
    unset %dd
    unset %ddr.*
    .timerDD off
  }
}
alias EndDD {
  msg $chan  The duel ran out of time and has been ended.
  unset %dd
  unset %ddr.*
}