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Home * Engines * Wasp

Wasp [1]

John Stanback's new UCI compliant chess engine and complete rewrite of Zarkov, first released short after June solstice 2016, announced [2] and hosted by Frank Quisinsky [3]. As a bitboard engine, Wasp is compiled for modern 64 bit CPU's with popcnt and bitscan instructions. Wasp 2.00, released in April 2017, is able to use multiple threads performing a Lazy SMP search [4]. In 2020, John Stanback played with tiny neural networks to learn how to backpropagate errors using Wasp's evaluation as the target, and then rewrote Wasp's evaluation function with fast tuning in mind, quite similar to the tiny NN approach [5]. Along with Wasp 5.00, released in November 2021, the evaluation function emerged to an NNUE with 1830 inputs, 192 neurons in the first hidden layer, 16 neurons in the second hidden layer, and two neurons in the third hidden layer. It was trained using positions from games between Wasp and other engines of roughly similar strength [6].






See also

Forum Posts

2016 ...




2020 ...

Re: Wasp NN by John Stanback, CCC, November 14, 2020



External Links

Chess Engine



  1. Vespula is a small genus of social wasps, widely distributed in the Northern Hemisphere. Along with members of their sister genus Dolichovespula, they are collectively known by the common name yellow jackets (or yellow-jackets) in North America. Vespula species have a shorter malar space and a more pronounced tendency to nest underground, but are otherwise nearly indistinguishable from Dolichovespula. As shown a Vespula germanica, Image by Richard Bartz, August 10, 2007, CC BY-SA 2.5, Wikimedia Commons, Wasp from Wikipedia
  2. Wasp 1.01 x64 by John Stanback released ... by Frank Quisinsky, CCC, June 22, 2016
  3. Frank's Chess Page, Wasp by John Stanback, June 22, 2016
  4. Wasp 2.00 by John Stanback ... with Lazy SMP! by Frank Quisinsky, CCC, April 21, 2017
  5. Re: Wasp NN by John Stanback, CCC, November 14, 2020
  6. Wasp 5.00 released by John Stanback, CCC, November 18, 2021
  7. based on Wasp Release Notes by John Stanback

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