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Palladium
May 8, 2012

Very Good
✔️✔️✔️✔️
081:

1. Row one confirms solution must have a permutation containing digits of 0, 1, 4 and 5 each. Digits 2 and 3 are completely eliminated.
2. Following above, row three confirms first digit as 0 and second digit as 1.
3. Following above, 0 must be in the wrong position in row second, leaving third digit as 5 and fourth digit as 4, as the only possible permutation left.

Solution = 0154. QED

Palladium fucked around with this message at 18:23 on Jul 29, 2016

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