Stackruns

Coherent 0.2.24: 3683 ± 52 over 10 anchors

Published chess-reporter Project: Coherent Chess anchoringmeasurement

Created by AI from the text of this post and read by the synthetic voice “Sulafat”; not a word-for-word version, and it may contain errors.

Project measurement, not in the register: an anchoring against foreign engines with a listed rating. The figures come from the data delivery (entry M-NNNN One Elo measurement: a build anchored against foreign engines with a listed rating, on a measuring machine of its own. Numbered in the order delivered; the register run it measured is named with it. The series continues the entries E-0001 to E-0012 and starts at M-0013.); the build measured is the one from run T-0202 of 23 October 2026. The reservations below are those delivered by the day of publication; the full and current account is on the playing-strength page.

Coherent 0.2.24 played 4,000 games against 10 foreign engines with a published rating, avalanche 5.0.0, halogen 16.0.0, justbot 0.5.0, minke 7.0.0, pzchessbot 7.1, quanticade_cronus 3.0, raphael 4.2.0, renegade 1.3.0, tcheran 14.0 and zangdar 7, 400 against each at 120+1. The result is 3683 ± 52, ± 5 of it statistical; anchored to the opponents' CCRL Computer Chess Rating Lists, a public ranking of chess engines from games under standard conditions. blitz ratings, not a CCRL rating. From 29 October 2026 that is the figure at the head of this site; it replaces the anchoring of 0.2.22 at 3688 ± 52.

The runs

Coherent 0.2.24: the anchors and the published figure — Project measurement, not in the register Project measurement, not in the register. 10 horizontal intervals, one per opponent, on a scale of anchored playing strength: avalanche 5.0.0 at 3670 with a half-width of 16, halogen 16.0.0 at 3691 with a half-width of 13, justbot 0.5.0 at 3683 with a half-width of 17, minke 7.0.0 at 3678 with a half-width of 18, pzchessbot 7.1 at 3685 with a half-width of 16, quanticade_cronus 3.0 at 3687 with a half-width of 14, raphael 4.2.0 at 3691 with a half-width of 16, renegade 1.3.0 at 3683 with a half-width of 14, tcheran 14.0 at 3679 with a half-width of 20, zangdar 7 at 3682 with a half-width of 16. Below them the published figure for 0.2.24, 3683 with a band of 52, shaded behind every row. The plus-minus values are half-widths of nominal 95 % intervals; the published band also carries the transfer term. 3620 3640 3660 3680 3700 3720 3740 avalanche 5.0.0 3670 ± 16 halogen 16.0.0 3691 ± 13 justbot 0.5.0 3683 ± 17 minke 7.0.0 3678 ± 18 pzchessbot 7.1 3685 ± 16 quanticade_cronus 3.0 3687 ± 14 raphael 4.2.0 3691 ± 16 renegade 1.3.0 3683 ± 14 tcheran 14.0 3679 ± 20 zangdar 7 3682 ± 16 0.2.24 published 3683 ± 52 playing strength anchored to CCRL blitz ratings
Each row is one opponent: the value anchored through it, with its 95 % half-width. The bottom row is the published figure for 0.2.24, 3683 ± 52; the shaded strip carries its band, transfer term included, across all rows. Project measurement, not in the register.
OpponentListedGamesScore rateDifferenceFrom it
avalanche 5.0.03660 ± 1340051.50 %+10.40 ± 9.503670 ± 16
halogen 16.0.03720 ± 840045.88 %−28.70 ± 9.903691 ± 13
justbot 0.5.03703 ± 1440047.12 %−20.00 ± 9.403683 ± 17
minke 7.0.03700 ± 1540046.88 %−21.70 ± 10.503678 ± 18
pzchessbot 7.13711 ± 1240046.25 %−26.10 ± 10.503685 ± 16
quanticade_cronus 3.03716 ± 1040045.88 %−28.70 ± 10.203687 ± 14
raphael 4.2.03730 ± 1240044.38 %−39.30 ± 11.003691 ± 16
renegade 1.3.03693 ± 1140048.50 %−10.40 ± 8.903683 ± 14
tcheran 14.03695 ± 1840047.75 %−15.60 ± 9.403679 ± 20
zangdar 73669 ± 1240051.88 %+13.00 ± 10.203682 ± 16

All half-widths at the 95 % level, as the delivery states them; the column From it is the anchor plus the measured difference. The listed ratings are from the CCRL Blitz Rating List, single-core rows only, as of 2026-10-27.

How the figure is formed

Recalculated from the anchors: the 10 anchored values, averaged with weights inverse to their variance, give 3683.7 with a statistical half-width of ± 5.0; the delivery rounds it to ± 5. With the measuring side's transfer term the band is ± 51.2; the delivery names 3683 ± 52, and this site publishes the delivery's figure. The anchored values are compatible with one another (chi-square 5.69 at 9 degrees of freedom, bound 16.92; half-widths read as 95 % half-widths).

Against 0.2.22 five anchors were played in both campaigns, avalanche 5.0.0, halogen 16.0.0, justbot 0.5.0, raphael 4.2.0 and renegade 1.3.0. Per anchor the difference of the two measured differences is −4.40 ± 13.94, −6.10 ± 13.45, −7.00 ± 13.87, +4.40 ± 15.84 and −0.80 ± 13.61; combined, −3 ± 6. The per-anchor values are compatible with one another (chi-square 1.50 at 4 degrees of freedom, bound 9.49). That is the measured change: the opponent's listed rating and the transfer term cancel in it. The 5 points between the two headline figures are not a measured gain; they carry both bands in full.

Coherent 0.2.24 against 0.2.22: the change per shared anchor — Project measurement, not in the register Project measurement, not in the register. Five horizontal intervals, one per anchor played in both campaigns, on a scale of Elo difference against 0.2.22: avalanche 5.0.0 at −4 with a half-width of 14, halogen 16.0.0 at −6 with a half-width of 13, justbot 0.5.0 at −7 with a half-width of 14, raphael 4.2.0 at +4 with a half-width of 16, renegade 1.3.0 at −1 with a half-width of 14. Below them the combined value, −3 ± 6. A dashed vertical line marks zero, no change. −30 −20 −10 0 +10 +20 +30 avalanche 5.0.0 −4 ± 14 halogen 16.0.0 −6 ± 13 justbot 0.5.0 −7 ± 14 raphael 4.2.0 +4 ± 16 renegade 1.3.0 −1 ± 14 combined −3 ± 6 difference of the two measured differences against 0.2.22, in Elo
Per anchor played in both campaigns, the difference of the two measured differences against 0.2.22; the bottom row combines them to −3 ± 6. The dashed line is zero: no change. The opponent's listed rating and the transfer term cancel in each row. Project measurement, not in the register.

What belongs to this figure

  1. Measured outside the formal registration procedure (project measurement on the Arena machine, no oracle finding, Law I).
  2. The measuring agents' privileges on the machine are not yet settled.
  3. Defaulted opponents do not count (a block not played to the end or more than 2 % of their games abandoned, with the opponent or neither as loser): none.
  4. Games abandoned without a loser (abandoned with * or drawn) count as a technical loss for the opponent: none.
  5. Aborted games with Coherent as loser count as normal (engine finding): none.
  6. Own book (8moves_v3) and no endgame databases instead of the list's conditions; time margin 250 ms, one dedicated core per engine.
  7. Quotable is ± 52 (95%): statistically 5.0 from games and list errors of the anchors (rounded up to 5), together with the transfer 51 as √(statistical² + transfer²). The transfer uncertainty to the conditions of the list (book, endgame tablebases, hardware) is not measured; it is a judgement.

Without a provenance record in the delivery: avalanche 5.0.0, halogen 16.0.0, justbot 0.5.0, minke 7.0.0, pzchessbot 7.1, quanticade_cronus 3.0, raphael 4.2.0, renegade 1.3.0, tcheran 14.0 and zangdar 7.

Conditions

120+1, book 8moves_v3 with 34,700 positions, each colour pair with an opening of its own, 256 MB hash, one thread, 7 concurrent games, no adjudication, a fixed number of games without SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.; 1 losses on time. The measurement is dated 29 October 2026, 21:40 UTC.

Generated from the data delivery. The recalculation is the site's; every other figure is the measuring side's.