7x7 Cube Solver ⚡ Easy
Section C — Advanced Parity & Theory (20 points) 11. (6 pts) Prove why a single edge wing flip (one wing flipped) is impossible on a correctly assembled 7x7 without disassembling pieces; then explain how apparent single flips arise after reduction and how they are resolved. 12. (6 pts) Derive and explain the cause of the “OLL parity” on odd-order cubes: present the permutation parity argument and show which piece-classes contribute to it. 13. (4 pts) Describe the impact of center-piece indistinguishability (the fact that centers of the same color on odd cubes are distinguishable only by position within center) on permutation counting and parity. 14. (4 pts) Discuss speedsolving considerations specific to 7x7 (finger-tricks, big-cube ergonomics, algorithms selection) and how they influence move-optimal strategies.
Risk warning
Foreign exchange transactions carry a high degree of risk and any transaction involving currencies is exposed to, among other things, changes in a country's political condition, economic climate, acts of nature - all of which may substantially affect the price or availability of a given currency.
Speculative trading in the foreign exchange market is a challenging prospect with above average risk. You must therefore carefully consider your investment objectives, level of experience and appetite for such risk prior to entering this market. Most importantly, do not invest money that you are not in a position to lose.
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