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• A periodic (p5 or p4) quinti-Snark is constructed by Tanner Jacobi, with the usual implications for reductions to the glider gun collection.
• An new LWSS synthesis by Chris Cain allows for LWSS, MWSS, and HWSS guns with pseudo periods as low as 18. 18 is the minimum for HWSS streams.
• New Orthogonoids with periods 2²⁷ and 2²⁸ are constructed by Dave Greene, followed by a 2²⁵ version by Adam P. Goucher.
• A new period-14 oscillator, 34P14.1, is found by 'carybe'.
• Christoph R. discovers a new Fireship tagalong.
• Dave Greene completes the construction of two new HashLife-friendly Demonoids.
• A complex 140-glider synthesis of a c/2 signal traveling along a diagonal long^N barge wire is completed by Martin Grant.
• A p4 bouncer reflector is constructed by Arie Paap. With the p9 reflector, this completes the set of colour-changing and colour-preserving reflectors with periods from 4 to 9.
• A p9 reflector is discovered by Matthias Merzenich and "carybe" based on Noam Elkies' bouncer reaction. This is the first reflector capable of reflecting a p27 glider stream.
• A true p33 gun is discovered by Arie Paap and Matthias Merzenich.
• A true p52 gun is completed by a collaborative effort.
• Dave Greene completes the construction of a stable line crosser with a repeat time of 501 ticks.

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