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cso 250a 77.8 percent version
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by
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dustin
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DUSTIN                            2022-12-21 01:11
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THE "NO LUCK BUT SKILL" VERSION OF CSO 250 ;) THE INTENDED SOLUTION STILL RELIES ON SOME LUCK BECAUSE THE Θ MUST NOT GROW FOR THE FIRST 32 FRAMES, BUT THE CHANCES ARE 77.8 PERCENT, WHILE IN THE ORIGINAL THE CHANCES OF SUCCESS WERE LESS THAN 1 PERCENT :D

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DUSTIN                            2022-12-26 14:22
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SOLUTIONS FREE!  
  
THE FOLLOWING EXPLANATIONS ASSUME THAT THE Θ DOES NOT GROW.  
  
CSO TRICKS/ EFFECTS:  
  
1. IN THE FRAME WHERE THE Ζ EXPLODES BY THE Θ, THE Η IS SCANNED BEFORE THE Ζ SO IT MOVES INTO THE EXPLOSION RANGE.  
  
__Η  
ΖΕΕ  
ΘΕΕ  
THAT'S THE PICTURE IMMEDIATELY BEFORE THE EXPLOSION. THE Η IS SCANNED FIRST AND MOVES LEFT, THEN THE Ζ IS SCANNED, EXPLODES AND THE Η VANISHES.  
  
^'S FIRST JOB IS TO PREVENT THAT FROM HAPPENING!  
  
2. THIS CAN BE PREVENTED BY MOBILIZING A Β JUST IN TIME SO THAT THE Β KILLS THE Ζ AND NOT THE Θ. THIS MAKES A BIG DIFFERENCE:  
  
Β_Η  
ΖΕΕ  
ΘΕΕ  
  
NOW THE Β IS SCANNED FIRST AND EXPLODES THE Ζ. ONLY THEN THE Η IS SCANNED. IT CAN NO LONGER MOVE LEFT BECAUSE IT'S NOW BLOCKED BY THE EXPLOSION SMOKE. SO THE Η SURVIVES!  
  
3. HOW TO MOBILIZE THE Β IN TIME? YOU CAN SEE THAT IN THE SOLUTIONS ^ MOVES TWO DOWN, THREE LEFT AND THEN SNAPE THE Γ AWAY FROM ABOVE:  
  
Ε^_  
ΒΓΓ  
Α_Ε  
  
^ IS SCANNED FIRST AND SNAPS DOWN, REMOVING THE Γ. THE Β IS SCANNED AFTERWARDS AND CAN IMMEDIATELY START FALLING.  
  
INSTEAD, WHY CANNOT ^ MOVE THREE DOWN AND TWO LEFT FROM THE START AND THEN SNAP LEFT?  
  
ΕΓΓ  
ΒΓ^  
Α_Γ  
  
IF ^ SNAPS LEFT HERE, THE Β CANNOT IMMEDIATELY START FALLING. THIS IS BECAUSE THE Β IS SCANNED BEFORE ^, SO THE Γ STILL BLOCKS THE Β! THE Β COULD ONLY START FALLING ONE FRAME LATER, AND THAT'S TOO LATE TO KILL THE Ζ!  
  
4. AFTER THE Ζ EXPLOSION, ^ WAITS FOR THE Η TO RETURN, WAITING ALREADY UNDER THE Β. THE NEXT JOB IS NOW TO KILL THE Η AND AT THE SAME TIME SAVE THE Α BEFORE IT'S CRUSHED IN THE EXPLOSION.  
LET'S CHECK WHAT HAPPENS FRAME BY FRAME WHEN THE Η ARRIVES:  
  
ΓΒΓ ΓΒΓ Γ_Γ Γ_Γ  
Ε^_ Ε__ ΕΒ_ Ε__  
__Γ _^Γ ^_Γ ^ΒΕ  
Α_Ε Α_Ε ΑΗΕ _ΗΕ  
Ε_Η ΕΗ_ Ε__ Ε__  
  
AND NOW THE DECISIVE MOMENT: ^ IS SCANNED FIRST, SO HE'S JUST IN TIME TO MOVE LEFT AND ESCAPE THE EXPLOSION RANGE BEFORE THE Β KILLS THE Η! THAT WAS CLOSE, BUT THAT'S PRETTY NORMAL FOR CSO EFFECTS! :D  
  
BTW, THE Λ IS JUST THERE TO EXCLUDE THE "LUCKY SOLUTION" OF CSO 250. IF THE Ζ EXPLODES ONE STEP MORE LEFT, THEN THE Λ DISAPPEARS AND ^ WILL BE ONE Α SHORT IN THE END ;)  
  
THAT WAS FUN TO WRITE! :D