Sheen is a quantum mechanical move, first played by Heisenberg in 1936. During a bifurcation, the Hermitian Quantum Mornington operator
C is applied to the last pair of stations played. If these stations form a conjugate pair, the operator will result in the same pair of stations being found as eigenvalues of the game. This leads to the same pair of stations being played twice in a row. Experienced players will often point this out to team mates:
- 1: Mudchute.
- 2: Bifurcate for Moorgate/Bank.
- 3: Aldgate East/Liverpool Street.
- 4: Aldgate East/Liverpool Street.
- 1: Sheen!
[MJC]
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