ELONFISH
Connecting

Archive · nothing is deleted

The record

Phase 1

Unresolved

White against Black

From the initial position, find a line for White that holds against every Black defence worth playing.

Principal line so far

Positions documented
4,231
Lines played to a result
7,188
Checkmates found
573
Sessions
9
Machine time
6h 00m
Principal line
7 plies
Positions documented · by session4,231

Every time the machine ran

Sessions

SessionStartedRanPositionsLinesDeepestState
S09 S2026091623342026-09-16 23:34 UTC9m4078ply 7Interrupted
S08 S2026091621542026-09-16 21:54 UTC7m2840ply 7Interrupted
S07 S2026091621432026-09-16 21:43 UTC3m20ply 7Interrupted
S06 S2026091613502026-09-16 13:50 UTC30m128287ply 7Interrupted
S05 S2026091605092026-09-16 05:09 UTC4h 00m1,5336,449ply 7Completed
S04 S2026091519362026-09-15 19:36 UTC45m355216ply 6Completed
S03 S2026091518312026-09-15 18:31 UTC20m232110ply 6Completed
S02 S2026091518022026-09-15 18:02 UTC5m123ply 6Completed
S01 S2026091518012026-09-15 18:01 UTC0m00—Interrupted

Played from the tree to a result

Documented lines

White 437 · Draw 6,535 · Black 216

What changed, and when

Milestones

  1. 2026-09-16 23:38 UTCSessionSession S202609162334 started · 4.00 h
  2. 2026-09-16 21:57 UTCSessionSession S202609162154 started · 3.80 h
  3. 2026-09-16 21:45 UTCSessionSession S202609162143 started · 3.99 h
  4. 2026-09-16 14:16 UTCLearnedExperience: 7000 games learned · 408533 positions known
  5. 2026-09-16 14:15 UTCLines200 lines played to a result
  6. 2026-09-16 14:07 UTCLines100 lines played to a result
  7. 2026-09-16 13:58 UTCSessionSession S202609161350 started · 2.83 h
  8. 2026-09-16 09:09 UTCSessionSession S202609160509 completed · 1533 new positions · 6449 lines
  9. 2026-09-16 09:08 UTCLearnedExperience: 6750 games learned · 382098 positions known
  10. 2026-09-16 09:08 UTCLines6400 lines played to a result
  11. 2026-09-16 09:05 UTCTree4,000 positions analysed
  12. 2026-09-16 09:05 UTCLines6200 lines played to a result
  13. 2026-09-16 09:05 UTCLines6200 lines played to a result
  14. 2026-09-16 09:04 UTCLearnedExperience: 6500 games learned · 375503 positions known
  15. 2026-09-16 09:03 UTCLines6100 lines played to a result
  16. 2026-09-16 09:01 UTCLines6000 lines played to a result
  17. 2026-09-16 08:59 UTCLearnedExperience: 6250 games learned · 367799 positions known
  18. 2026-09-16 08:59 UTCMerge400 transpositions merged into the tree
  19. 2026-09-16 08:59 UTCLines5900 lines played to a result
  20. 2026-09-16 08:58 UTCLines5800 lines played to a result
  21. 2026-09-16 08:58 UTCLines5800 lines played to a result
  22. 2026-09-16 08:55 UTCLearnedExperience: 6000 games learned · 358746 positions known
  23. 2026-09-16 08:53 UTCLines5600 lines played to a result
  24. 2026-09-16 08:52 UTCLines5500 lines played to a result
  25. 2026-09-16 08:50 UTCLearnedExperience: 5750 games learned · 349091 positions known
  26. 2026-09-16 08:50 UTCLines5400 lines played to a result
  27. 2026-09-16 08:50 UTCLines5400 lines played to a result
  28. 2026-09-16 08:47 UTCLines5300 lines played to a result
  29. 2026-09-16 08:45 UTCLearnedExperience: 5500 games learned · 337759 positions known
  30. 2026-09-16 08:43 UTCLines5100 lines played to a result
  31. 2026-09-16 08:43 UTCLines5100 lines played to a result
  32. 2026-09-16 08:41 UTCLines5000 lines played to a result
  33. 2026-09-16 08:41 UTCLines5000 lines played to a result
  34. 2026-09-16 08:40 UTCLearnedExperience: 5250 games learned · 327751 positions known
  35. 2026-09-16 08:39 UTCLines4900 lines played to a result
  36. 2026-09-16 08:37 UTCLines4800 lines played to a result
  37. 2026-09-16 08:35 UTCLines4700 lines played to a result
  38. 2026-09-16 08:34 UTCLearnedExperience: 5000 games learned · 316847 positions known
  39. 2026-09-16 08:33 UTCLines4600 lines played to a result
  40. 2026-09-16 08:31 UTCLines4500 lines played to a result
  41. 2026-09-16 08:31 UTCLines4500 lines played to a result
  42. 2026-09-16 08:30 UTCLearnedExperience: 4750 games learned · 307099 positions known
  43. 2026-09-16 08:29 UTCLines4400 lines played to a result
  44. 2026-09-16 08:29 UTCLines4400 lines played to a result
  45. 2026-09-16 08:27 UTCLines4300 lines played to a result
  46. 2026-09-16 08:26 UTCLines4200 lines played to a result
  47. 2026-09-16 08:26 UTCLines4200 lines played to a result
  48. 2026-09-16 08:25 UTCLearnedExperience: 4500 games learned · 297816 positions known
  49. 2026-09-16 08:24 UTCLines4100 lines played to a result
  50. 2026-09-16 08:22 UTCLines4000 lines played to a result
  51. 2026-09-16 08:21 UTCLearnedExperience: 4250 games learned · 289616 positions known
  52. 2026-09-16 08:21 UTCLines3900 lines played to a result
  53. 2026-09-16 08:19 UTCLines3800 lines played to a result
  54. 2026-09-16 08:18 UTCLines3700 lines played to a result
  55. 2026-09-16 08:18 UTCLines3700 lines played to a result
  56. 2026-09-16 08:17 UTCLearnedExperience: 4000 games learned · 281838 positions known
  57. 2026-09-16 08:16 UTCLines3600 lines played to a result
  58. 2026-09-16 08:16 UTCLines3600 lines played to a result
  59. 2026-09-16 08:13 UTCLearnedExperience: 3750 games learned · 273978 positions known
  60. 2026-09-16 08:12 UTCLines3300 lines played to a result
  61. 2026-09-16 08:12 UTCLines3300 lines played to a result
  62. 2026-09-16 08:10 UTCLines3200 lines played to a result
  63. 2026-09-16 08:09 UTCLearnedExperience: 3500 games learned · 265762 positions known
  64. 2026-09-16 08:08 UTCLines3100 lines played to a result
  65. 2026-09-16 08:05 UTCLearnedExperience: 3250 games learned · 255308 positions known
  66. 2026-09-16 08:03 UTCTree3,500 positions analysed
  67. 2026-09-16 08:03 UTCLines2800 lines played to a result
  68. 2026-09-16 08:00 UTCLearnedExperience: 3000 games learned · 245220 positions known
  69. 2026-09-16 07:57 UTCLines2500 lines played to a result
  70. 2026-09-16 07:56 UTCLearnedExperience: 2750 games learned · 233095 positions known
  71. 2026-09-16 07:55 UTCLines2400 lines played to a result
  72. 2026-09-16 07:53 UTCLines2300 lines played to a result
  73. 2026-09-16 07:50 UTCLines2200 lines played to a result
  74. 2026-09-16 07:49 UTCLearnedExperience: 2500 games learned · 219561 positions known
  75. 2026-09-16 07:45 UTCLines2000 lines played to a result
  76. 2026-09-16 07:43 UTCLearnedExperience: 2250 games learned · 205206 positions known
  77. 2026-09-16 07:42 UTCLines1900 lines played to a result
  78. 2026-09-16 07:39 UTCLines1800 lines played to a result
  79. 2026-09-16 07:37 UTCLines1700 lines played to a result
  80. 2026-09-16 07:36 UTCLearnedExperience: 2000 games learned · 189267 positions known

Positions reduced by visitors in the Lab

Lab results

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