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ScryBrew Tools

Reverse Consistency

Solve how many copies or sources are needed to hit a target percentage.

Inputs

Result

4

Required hits

Minimum count to reach 50%.

53%

Achieved

Odds at the required count.

43%

Previous

Odds one hit lower.

This solves copy count only; it does not model tutors, mulligans, or selection.

Why it matters

Sometimes the useful question is not what are my odds, but how many copies do I need. Reverse Consistency solves the slot count required to reach a target percentage.