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Reckless 0.10.0 dev-26.08.2026 - Pre-release version strong chess engine

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Reckless, a Rust-based UCI chess engine.
Author: Arseniy Surkov   Rating Chess Engines Diary CEDR=3846

Reckless is the new star among chess engines. On the new Chess Engines Diary CEDR ranking list, Reckless is ranked 3th with a rating of 3846. Testing of the new engine version is coming soon.

Reckless what's new?

An early development build that includes recent updates and improvements since the release of Reckless v0.9.0.

STC 8.0+0.08s vs. v0.9.0
Elo   | 12.11 +- 2.55 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 20012 W: 5555 L: 4858 D: 9599
Penta | [89, 2108, 4926, 2783, 100]
https://recklesschess.space/test/14135/

LTC 40.0+0.40s vs. v0.9.0
Elo   | 12.13 +- 3.31 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 10002 W: 2676 L: 2327 D: 4999
Penta | [7, 984, 2673, 1327, 10]
https://recklesschess.space/test/14136/

Reckless 0.9.0-dev-fe4d4b3d vs other engines:

PlentyChess 7.0.1715/28+228 games
Berserk 2025062213.5/28-128 games
Obsidian dev-16.15 SE13.5/28-128 games
Alexandria 8.1.2 JA13.5/24+324 games
Viridithas 18.0.012/20+420 games
Stormphrax 7.0.0 JA12/20+420 games
Halogen 15.12.011.5/20+320 games
Caissa 1.23 JA11/20+220 games
Integral 7.0.0 JA10.5/20+120 games
Clover 9.1 JA10/20+020 games
Halogen 15.17.14/8+08 games
SpecTral 114/8+08 games
Alexandria 8.1.124/8+08 games
Kookaburra 3.113.5/8-18 games
Killfish PB 1510253.5/8-18 games
Arasan 25.2 JA3/4+24 games
Wordfish 3.20 1011252.5/4+14 games
Dragon 3.32.5/4+14 games
CorChess 202510052/4+04 games
Deep Blue2/4+04 games
HypnoS 1.002/4+04 games




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