Sigaba CSP-889 machine challenge

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The Sigaba is a revolutionary American electromechanical cipher machine. It was put into service in 1941. It will remain in service until the end of the 1950s.

The CSP-889 is the first model of the Sigaba. This is the model that was used during the Second World War.

Reference:Sigaba

1st Problem (very easy)

Rafael Pascual 07/02/25

G. Lasry 27/05/25

Mahmood Tavafoghi 30/08/25

Jerva 05/09/25

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2nd Problem (medium)

Rafael Pascual 24/02/25

G. Lasry 28/05/25

Mahmood Tavafoghi 30/08/25

Jerva 05/09/25

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3rd Problem (difficult)

G. Lasry 28/05/25

Mahmood Tavafoghi 30/08/25

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4th Problem (difficult)

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5th Problem (very hard)

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6th Problem (very hard)

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7th Problem (very hard)

Mahmood Tavafoghi 19/09/25

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