Stockfish vs Reckless (TCEC Season 29 Replay)

goni-K26 · Post by **goni-K26** » Sat Apr 04, 2026 11:14 am

Hi everyone!

I am running a replay of the TCEC 29 Superfinal matchup between Stockfish and Reckless, along with several other top engines. I want to see how these results translate to a different hardware environment and time control.

Tournament Setup:

Code: Select all

Name: 	  TCEC 29 SuFi: Stockfish vs Reckless Replay
Level: 	  Blitz 3/2
Hash: 	  256
Threads:  Single Thread
Openings: TCEC-SuFi29 Openings
GUI:      Arena Chess GUI
Hardware: Intel(R) Core(TM) i5-4570 3.20GHz 8GB RAM
OS:       Windows 11 Pro x64

Integrity & Family Regulations:

To preserve the purity of the competitive rankings and avoid internal redundancy:
Matches between engines of the same family or architectural lineage are not contested on the board.
These pairings are pre-recorded as a Standard Draw (0.5 – 0.5).

Participants:

Code: Select all

No |           Name                 | Elo  |
 1 | Stockfish 18 x64(AVX2)         | 2980 |
 2 | Stockfish 17.1 x64(AVX2)       | 2975 |
 3 | Reckless 0.9.0 x64(AVX2)       | 2970 |
 4 | Reckless 0.8.0 x64(AVX2)       | 2965 |
 5 | PlentyChess 7.0.0 x64(BMI2)    | 2963 |
 6 | Obsidian 16.0 x64(BMI2)        | 2950 |
 7 | Alexandria 9.0.0 x64(BMI2)     | 2945 |
 8 | Komodo Dragon 3.3 x64(AVX2)    | 2930 |

Live Standing:

Code: Select all

No |           Name              |Points|Games|Live Elo| Elo  |  +/-  | Score |
 1 | Stockfish 18 x64(AVX2)      | 76.0 | 120 | 2999.1 | 2980 | +19.2 | 63.3% |
 2 | Stockfish 17.1 x64(AVX2)    | 73.5 | 120 | 2991.3 | 2975 | +16.4 | 61.2% |
 3 | Reckless 0.9.0 x64(AVX2)    | 63.0 | 119 | 2972.1 | 2970 |  +2.2 | 52.9% |
 4 | PlentyChess 7.0.0 x64(BMI2) | 69.0 | 138 | 2962.0 | 2963 |  -1.0 | 50.0% |
 5 | Reckless 0.8.0 x64(AVX2)    | 57.5 | 119 | 2959.5 | 2965 |  -5.5 | 48.3% |
 6 | Alexandria 9.0.0 x64(BMI2)  | 64.0 | 138 | 2942.6 | 2945 |  -2.3 | 46.3% |
 7 | Obsidian 16.0 x64(BMI2)     | 63.0 | 138 | 2944.6 | 2950 |  -5.4 | 45.6% |
 8 | Komodo Dragon 3.3 x64(AVX2) | 49.0 | 138 | 2911.0 | 2930 | -19.0 | 35.5% |

goni-K26 · Post by **goni-K26** » Sat Apr 04, 2026 2:06 pm

Live Standing: after 20 rounds

Code: Select all

No |           Name              |Points|Games|Live Elo| +/-  | Score |
 1 | Stockfish 18 x64(AVX2)      | 76,0 | 120 | 2999,1 |+19,2 | 63,3% |
 2 | Stockfish 17.1 x64(AVX2)    | 73,5 | 120 | 2991,3 |+16,4 | 61,2% |
 3 | Reckless 0.9.0 x64(AVX2)    | 64,0 | 120 | 2973,0 | +3,0 | 53,3% |
 4 | PlentyChess 7.0.0 x64(BMI2) | 70,0 | 140 | 2961,8 | -1,1 | 50,0% |
 5 | Reckless 0.8.0 x64(AVX2)    | 57,5 | 120 | 2958,6 | -6,4 | 47,9% |
 6 | Alexandria 9.0.0 x64(BMI2)  | 65,0 | 140 | 2942,6 | -2,3 | 46,4% |
 7 | Obsidian 16.0 x64(BMI2)     | 64,0 | 140 | 2944,6 | -5,4 | 45,7% |
 8 | Komodo Dragon 3.3 x64(AVX2) | 50,0 | 140 | 2911,1 |-18,8 | 35,7% |

------------------------------------------------------------------------
Download Pgn Games(Zip)
------------------------------------------------------------------------
Status: RUNNING: 520/2.600 games played

goni-K26 · Post by **goni-K26** » Sun Apr 05, 2026 10:30 am

________________________________________________________________________________________________
Top-Tournament Setup
________________________________________________________________________________________________
Live Standing: after 24 rounds

Code: Select all

No |           Name              |Points|Games|Live Elo|  +/-  |Score |
 1 | Stockfish 18 x64(AVX2)      | 91,0 | 144 | 3002,6 | +22,7 | 63,1 |
 2 | Stockfish 17.1 x64(AVX2)    | 88,5 | 144 | 2995,1 | +20,2 | 61,4 |
 3 | Reckless 0.9.0 x64(AVX2)    | 79,0 | 144 | 2977,1 |  +7,2 | 54,8 |
 4 | PlentyChess 7.0.0 x64(BMI2) | 82,0 | 168 | 2958,8 |  -4,1 | 48,8 |
 5 | Reckless 0.8.0 x64(AVX2)    | 70,0 | 144 | 2959,0 |  -6,0 | 48,6 |
 6 | Obsidian 16.0 x64(BMI2)     | 78,0 | 168 | 2945,3 |  -4,7 | 46,4 |
 7 | Alexandria 9.0.0 x64(BMI2)  | 76,0 | 168 | 2939,3 |  -5,6 | 45,2 |
 8 | Komodo Dragon 3.3 x64(AVX2) | 59,5 | 168 | 2906,6 | -23,3 | 35,4 |

________________________________________________________________________________________________

Crosstable:
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Code: Select all

----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|
Rank|            Name            |  Score  |-| Stockfish 18 x64(AVX2) |Stockfish 17.1 x64(AVX2)|Reckless 0.9.0 x64(AVX2)|PlentyChess 7.0.0 x64(BM|Reckless 0.8.0 x64(AVX2)|Obsidian 16.0 x64(BMI2) |Alexandria 9.0.0 x64(BMI|Komodo Dragon 3.3 x64(AV|-|  S-B   |
----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|
  1-|Stockfish 18 x64(AVX2)      |103.0/168|-|························|========================|01==01===1=1===1=1=1=10=|01==0==101=======1=101=1|====1==01=10==1=1=1=1=1=|===1=1=1=1=1==11===1=1==|1===1=1=1=1=====1=10==1=|1===1===1=1===1=1=1=1=10|-| 8279,50|
  2-|Stockfish 17.1 x64(AVX2)    |100.5/168|-|========================|························|=1==010==10====1===101=1|10====10===01=1=10=01=10|1=====1=1==0==10101===10|=1==01=1=1=1=1=1=1=====1|01===1=1=1=1===1===1=1=1|1===1=1=1=1=1=1=1=1=1=10|-| 8072,00|
  3-|Reckless 0.9.0 x64(AVX2)    | 91.0/168|-|10==10===0=0===0=0=0=01=|=0==101==01====0===010=0|························|1===101=101===1010==1=1=|========================|01===10==1=1==0===1==1=1|10==10=01=10====1=101===|111====1=1=1===1=1=1=1=1|-| 7328,00|
  4-|PlentyChess 7.0.0 x64(BMI2) | 82.0/168|-|10==1==010=======0=010=0|01====01===10=0=01=10=01|0===010=010===0101==0=0=|························|1=====101======0101010=0|====1==0======10=010=0=0|01===101==0=====01=1=1==|1===1===1=101=1====01=1=|-| 6785,20|
  5-|Reckless 0.8.0 x64(AVX2)    | 82.0/168|-|====0==10=01==0=0=0=0=0=|0=====0=0==1==01010===01|========================|0=====010======1010101=1|························|=0==1010==1====0==1010==|=0==1=101=10=====0=01===|=1===1=101=1====01=101=1|-| 6759,70|
  6-|Obsidian 16.0 x64(BMI2)     | 78.0/168|-|===0=0=0=0=0==00===0=0==|=0==10=0=0=0=0=0=0=====0|10===01==0=0==1===0==0=0|====0==1======01=101=1=1|=1==0101==0====1==0101==|························|========1=00===010101=10|====01=1===1===1=1=1=101|-| 6385,00|
  7-|Alexandria 9.0.0 x64(BMI2)  | 76.0/168|-|0===0=0=0=0=====0=01==0=|10===0=0=0=0===0===0=0=0|01==01=10=01====0=010===|10===010==1=====10=0=0==|=1==0=010=01=====1=10===|========0=11===101010=01|························|10===0101=1==0====1=101=|-| 6315,00|
  8-|Komodo Dragon 3.3 x64(AVX2) | 59.5/168|-|0===0===0=0===0=0=0=0=01|0===0=0=0=0=0=0=0=0=0=01|000====0=0=0===0=0=0=0=0|0===0===0=010=0====10=0=|=0===0=010=0====10=010=0|====10=0===0===0=0=0=010|01===1010=0==1====0=010=|························|-| 5133,00|
----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|

Standing: after 20 rounds
________________________________________________________________________________________________
Download Pgn Games(Zip)
Status: RUNNING: 624/2.600 games played
________________________________________________________________________________________________

goni-K26 · Post by **goni-K26** » Mon Apr 06, 2026 3:25 pm

________________________________________________________________________________________________
Top-Tournament Setup
________________________________________________________________________________________________
Live Standing: after 30 rounds(sorted by score)

Code: Select all

No |           Name              |Points|Games|Live Elo|  +/-  |Score |
 1 | Stockfish 18 x64(AVX2)      | 91,0 | 144 | 3002,6 | +22,7 | 63,1% |
 2 | Stockfish 17.1 x64(AVX2)    | 88,5 | 144 | 2995,1 | +20,2 | 61,4% |
 3 | Reckless 0.9.0 x64(AVX2)    | 79,0 | 144 | 2977,1 |  +7,2 | 54,8% |
 4 | PlentyChess 7.0.0 x64(BMI2) | 82,0 | 168 | 2958,8 |  -4,1 | 48,8% |
 5 | Reckless 0.8.0 x64(AVX2)    | 70,0 | 144 | 2959,0 |  -6,0 | 48,6% |
 6 | Obsidian 16.0 x64(BMI2)     | 78,0 | 168 | 2945,3 |  -4,7 | 46,4% |
 7 | Alexandria 9.0.0 x64(BMI2)  | 76,0 | 168 | 2939,3 |  -5,6 | 45,2% |
 8 | Komodo Dragon 3.3 x64(AVX2) | 59,5 | 168 | 2906,6 | -23,3 | 35,4% |

________________________________________________________________________________________________

Crosstable:
________________________________________________________________________________________________

Code: Select all

----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|
Rank|            Name            |  Score  |-| Stockfish 18 x64(AVX2) |Stockfish 17.1 x64(AVX2)|Reckless 0.9.0 x64(AVX2)|PlentyChess 7.0.0 x64(BM|Reckless 0.8.0 x64(AVX2)|Obsidian 16.0 x64(BMI2) |Alexandria 9.0.0 x64(BMI|Komodo Dragon 3.3 x64(AV|-|  S-B   |
----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|
  1-|Stockfish 18 x64(AVX2)      |103.0/168|-|························|========================|01==01===1=1===1=1=1=10=|01==0==101=======1=101=1|====1==01=10==1=1=1=1=1=|===1=1=1=1=1==11===1=1==|1===1=1=1=1=====1=10==1=|1===1===1=1===1=1=1=1=10|-| 8279,50|
  2-|Stockfish 17.1 x64(AVX2)    |100.5/168|-|========================|························|=1==010==10====1===101=1|10====10===01=1=10=01=10|1=====1=1==0==10101===10|=1==01=1=1=1=1=1=1=====1|01===1=1=1=1===1===1=1=1|1===1=1=1=1=1=1=1=1=1=10|-| 8072,00|
  3-|Reckless 0.9.0 x64(AVX2)    | 91.0/168|-|10==10===0=0===0=0=0=01=|=0==101==01====0===010=0|························|1===101=101===1010==1=1=|========================|01===10==1=1==0===1==1=1|10==10=01=10====1=101===|111====1=1=1===1=1=1=1=1|-| 7328,00|
  4-|PlentyChess 7.0.0 x64(BMI2) | 82.0/168|-|10==1==010=======0=010=0|01====01===10=0=01=10=01|0===010=010===0101==0=0=|························|1=====101======0101010=0|====1==0======10=010=0=0|01===101==0=====01=1=1==|1===1===1=101=1====01=1=|-| 6785,20|
  5-|Reckless 0.8.0 x64(AVX2)    | 82.0/168|-|====0==10=01==0=0=0=0=0=|0=====0=0==1==01010===01|========================|0=====010======1010101=1|························|=0==1010==1====0==1010==|=0==1=101=10=====0=01===|=1===1=101=1====01=101=1|-| 6759,70|
  6-|Obsidian 16.0 x64(BMI2)     | 78.0/168|-|===0=0=0=0=0==00===0=0==|=0==10=0=0=0=0=0=0=====0|10===01==0=0==1===0==0=0|====0==1======01=101=1=1|=1==0101==0====1==0101==|························|========1=00===010101=10|====01=1===1===1=1=1=101|-| 6385,00|
  7-|Alexandria 9.0.0 x64(BMI2)  | 76.0/168|-|0===0=0=0=0=====0=01==0=|10===0=0=0=0===0===0=0=0|01==01=10=01====0=010===|10===010==1=====10=0=0==|=1==0=010=01=====1=10===|========0=11===101010=01|························|10===0101=1==0====1=101=|-| 6315,00|
  8-|Komodo Dragon 3.3 x64(AVX2) | 59.5/168|-|0===0===0=0===0=0=0=0=01|0===0=0=0=0=0=0=0=0=0=01|000====0=0=0===0=0=0=0=0|0===0===0=010=0====10=0=|=0===0=010=0====10=010=0|====10=0===0===0=0=0=010|01===1010=0==1====0=010=|························|-| 5133,00|
----|----------------------------|---------|-|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|------------------------|-|--------|

________________________________________________________________________________________________
Download Pgn Games(Zip)
Status: RUNNING: 780/2.600 games played
________________________________________________________________________________________________
Standing: after 20 rounds
________________________________________________________________________________________________
Here are some of my posts.:
[Handicap] Houdini 6(Rapid 15+10) vs. Elite-25(Blitz 3+2)
The 100:1 Time Odds Massacre
________________________________________________________________________________________________

Vinvin · Post by **Vinvin** » Tue Apr 07, 2026 1:35 am

Nice ! Thanks !
Would you add Reckless 0.10.0 at the end ?

goni-K26 · Post by **goni-K26** » Tue Apr 07, 2026 4:19 pm

Vinvin wrote: ↑Tue Apr 07, 2026 1:35 am Nice ! Thanks !
Would you add Reckless 0.10.0 at the end ?

You're welcome!
Regarding Reckless 0.10.0, I might include it in a future test once the author releases the official version.

Stockfish vs Reckless (TCEC Season 29 Replay)

Stockfish vs Reckless (TCEC Season 29 Replay)

Re: Stockfish vs Reckless (TCEC Season 29 Replay)

Re: Stockfish vs Reckless (TCEC Season 29 Replay)

Re: Stockfish vs Reckless (TCEC Season 29 Replay)

Re: Stockfish vs Reckless (TCEC Season 29 Replay)

Re: Stockfish vs Reckless (TCEC Season 29 Replay)