<snapdata remixID="8925039"><project name="U2L4-checkerboard_SV" app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" volume="100" pan="0" lines="flat" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="false" 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</pentrails><costumes><list 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