Alright so I have gotten absolutely sick of the huge gaps between nomination and voting for both the OCADOTY 2019 and the POTD 201n. Here it is. Here is the nomination thread.
1) David Hilbert, the first discovered p23 oscillator, by Luka Okanishi and Aidan F. Pierce
2) The spider synthesis, the first synthesis of a c/5 orthogonal spaceship, by Martin Grant, Goldtiger997 and Tanner Jacobi
3) The scholar, the second 2c/7 diagonal spaceship, by Andrew J. Wade
4) Sir Robin, the first elementary oblique spaceship and the fastest possible knightship with a catalogue of tagalongs, by Adam P. Goucher, Tomas Rokicki and Josh Ball
5) The 0E0P metacell, a unit cell that is completely empty in the OFF phase, and the largest unit cell so far, by Adam P. Goucher
6) The reverse caber-tosser, a method to synthesise any glider-synthesisable object in just 32 gliders, by Adam P. Goucher, Dave Greene and Chris Cain
7) The 2-engine Cordership, the Cordership with the least amount of engines and a disproof of the hypothesis that 3 engines are required for a Cordership, by Aidan F. Pierce
8) Tanner's p46, a sparky period-46 oscillator that can be used to construct guns, by Tanner Jacobi
9) Stable pulse dividers (the tremi-Snark, quadri-Snark and semi-cenarks), useful for optimising glider and other spaceship guns, by Tanner Jacobi
10) The Caterloopillars, a family of fast adjustable orthogonal macro-spaceships going up to c/4, by David Bell, Alexey Nigin and Michael Simkin
11) The copperhead, the first c/10 orthogonal spaceship and a bite-sized one, and the fireship, a pseudo-tagalong that allows for complex c/10 orthogonal circuitry, by zdr and Simon Ekström
12) The grandfatherless pattern, the solution of a conjecture posed by John H. Conway which has 17920 non-trivial parents, all Gardens of Eden, by mtve
13) The syringe, a small speedy versatile G-to-H converter that simplified the majority of Herschel loops and glider guns with a H-to-G and a few Snarks, by Tanner Jacobi
14) The Simkin glider gun, the smallest glider gun in its double-barreled form, by Michael Simkin
15) The Demonoids, diagonal versions of Gemini and the smallest self-constructing/supporting spaceships by population, by Chris Cain, Dave Greene and Dongook Lee
16) The waterbear, the first "fast" oblique spaceship constructed, travelling at the speed of (23,5)c/79, and the smallest self-constructing/supporting spaceship by bounding box, by Brett Berger and Ivan Formichev
17) The centipede, the first 31c/240 orthogonal spaceship which shares much of its circuitry with the shield bug, by Chris Cain
18) The half-baked knightships, including the Parallel HBK, the first family of adjustable-velocity fixed-slope spaceships and the first class of macro-spaceships not based on Gemini, by Ivan Formichev, Chris Cain, Dave Greene and Adam P. Goucher
19) The Snark, a bite-sized 90-degree CP glider reflector that made all sorts of oscillators and guns possible and tightened up Herschel loops, by Mike Playle
20) The loafer, the first c/7 orthogonal spaceship and at 20 cells the smallest non-terminal velocity spaceship, by Josh Ball
21) The CC semi-Snark, a compact period doubler and a CC 90-degree 2G-to-G reflector, by Sergey Petrov
22) The linear propagator, arguably the first example of a replicator constructed, by Dave Greene
23) The fully universal Turing machine, an extension of the universal Turing machine that is capable of simulating itself, by Paul Rendell
24) The lobster, the first c/7 diagonal spaceship as well as an infinitely-extensible one, by Matthias Merzenich
25) Garden of Eden 6, a rotationally symmetric Garden of Eden, by Marjin Heule, Christiaan Hartman, Kees Kwekkeboom and Alain Noels
26) Gemini, the first oblique spaceship constructed, an ibisship in its original form, with adjustable velocity and displacement, by Andrew J. Wade
27) The pi calculator, a pattern that prints out the digits of pi via a binary algorithm and its simpler variant, the phi calculator, by Adam P. Goucher
28) The c/5 diagonal rakes, a circuit that catalyses gliders into two while moving at c/5 diagonal with variable periods, by Matthias Merzenich
29) The spaghetti monster, the first and only 3c/7 orthogonal spaceship that can support a 3c/7o wave, by Tim Coe
30) Merzenich's p31, the first and smallest period-31 oscillator capable of reflecting gliders 90 degrees, by Matthias Merzenich
31) The statorless p3, the first volatility-1 period-3 oscillator, by Jason Summers
32) 37P4H1V0, the smallest c/4 orthogonal spaceship, by Josh Ball
Votes are to be submitted in the standard three-stars format like so:
and you can vote for as many as you want (no quotes necessary) but for Conway's sake do not vote like this:#01 **
#02 *
#04 ***
#08 **
#16 ***
#32 **