Leaks

Ranked by frequency × severity × recency over 7089 analysed games (weighted 1282.2: over-the-board counts fully, blitz a fifth, bullet almost nothing). Confirmed needs 12 or more occurrences; provisional 5 to 11; fewer is a watch. Only confirmed leaks may drive more than a fifth of a week's training. Tactical motifs shown here passed validation against the Lichess puzzle database at 70% precision or better; the rest are tracked but hidden until they do.

01Mistakes and blunders with no tactical shape (judgement, not calculation)

confirmed

86.7 per 100 games (95% CI 49–55 of games)severity 31% win chance per occurrencen = 6413 in 3787 games (weighted 1112.2)score 477.7trend: flat (-4.2% vs previous 60 days, n 832/792)

2017-10-18 · classical · move 21
played f1c1, best c3d4, −44% · no tactical shape detected

2017-08-30 · classical · move 35
played f3g4, best g1g2, −41% · no tactical shape detected

2026-02-17 · rapid · move 30
played h5g4, best b3c5, −73% · no tactical shape detected

All 8 strongest examples

lichess:Do775uJ7 ply 40 · −44% · source
lichess:tF7HyKj4 ply 68 · −41% · source
chesscom:6dd3108f-0c03-11f1-ac80-d7829b01000f ply 58 · −73% · source
chesscom:a7573f32-0c17-11f1-a66e-ec20b701000f ply 68 · −69% · source
chesscom:4ceda635-10af-11f1-843d-6d1bef01000f ply 76 · −67% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 95 · −38% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 89 · −38% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 87 · −38% · source

02Slow eval slides over several quiet moves with no single big error

confirmed

97.1 per 100 games (95% CI 62–67 of games)severity 19% win chance per occurrencen = 7007 in 4655 games (weighted 1244.6)score 328.3trend: flat (-1.1% vs previous 60 days, n 902/850)

2014-08-04 · rapid · move 2
−33%

2015-12-07 · correspondence · move 3
−57%

2022-09-02 · rapid · move 17
−52%

All 8 strongest examples

chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 3 · −33% · source
chesscom:15752170-8630-11e5-8180-00000001000b ply 5 · −57% · source
lichess:EkXHqv10 ply 33 · −52% · source
chesscom:6f1e029a-13d7-11f1-a564-66f81701000f ply 17 · −50% · source
chesscom:183c3445-07f0-11f1-86b0-44f53a01000f ply 1 · −49% · source
chesscom:81bd5d9d-0846-11f1-8abd-4a64c601000f ply 27 · −49% · source
chesscom:3edad30c-c0fa-11e0-8000-000000010001 ply 26 · −46% · source
chesscom:34e4b4fa-4807-11f0-8cb1-1d689101000f ply 0 · −46% · source

03Errors made with under 30 seconds on the clock

confirmed

42.0 per 100 games (95% CI 15–19 of games)severity 36% win chance per occurrencen = 4950 in 1886 games (weighted 539.0)score 278.9trend: flat (+0.1% vs previous 60 days, n 615/463)

All 8 strongest examples

chesscom:1722e728-3b3e-11e1-8000-000000010001 · −93% · source
lichess:b7bYz7Ew · −91% · source
lichess:chLFxmee · −107% · source
chesscom:a1a9fead-f08e-11f0-be0e-06112901000f · −106% · source
chesscom:b61eb89c-89ad-11f1-bfe1-0a232701000f · −103% · source
chesscom:97bfa3c7-257b-11f1-9341-525d3d01000f · −99% · source
chesscom:c059a81e-aa72-11f0-98f0-1f5aca01000f · −98% · source
chesscom:c059a81e-aa72-11f0-98f0-1f5aca01000f · −98% · source

04Reached a clearly winning position (≥ +2) and did not win

confirmed

26.7 per 100 games (95% CI 24–29 of games)severity 50% win chance per occurrencen = 1980 in 1980 games (weighted 342.4)score 238.0trend: flat (-2.4% vs previous 60 days, n 254/245)

All 8 strongest examples

chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 0 · −50% · source
chesscom:a51801e4-fb21-11de-8000-000000010001 ply 0 · −50% · source
chesscom:b3323acc-b515-11f1-bbdf-8eeeee01000f ply 0 · −50% · source
chesscom:9fa83964-30ec-11dd-8000-000000010001 ply 0 · −50% · source
chesscom:f2ed20a8-35f1-11dd-8000-000000010001 ply 0 · −50% · source
chesscom:0ebe2326-c010-11e0-807f-00000001000b ply 0 · −50% · source
chesscom:d4548626-c00f-11e0-8071-00000001000b ply 0 · −50% · source
chesscom:9949fc8c-c690-11e0-828e-00000001000b ply 0 · −50% · source

05Errors in critical positions after thinking under 5 seconds

confirmed

29.5 per 100 games (95% CI 20–25 of games)severity 20% win chance per occurrencen = 2482 in 1809 games (weighted 378.1)score 105.9trend: flat (+12.1% vs previous 60 days, n 311/261)

All 8 strongest examples

chesscom:ff128c8c-b963-11de-8000-000000010001 · −20% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 · −20% · source
chesscom:29147c78-ab3c-11df-8000-000000010001 · −20% · source
chesscom:668c0864-29fe-11e0-8000-000000010001 · −20% · source
chesscom:0b5fd700-5c34-11e0-8000-000000010001 · −20% · source
chesscom:3edad30c-c0fa-11e0-8000-000000010001 · −20% · source
chesscom:81026714-0e01-11e1-8000-000000010001 · −20% · source
chesscom:81026714-0e01-11e1-8000-000000010001 · −20% · source

06Mistakes and blunders once the game reached an endgame

confirmed

15.3 per 100 games (95% CI 8–11 of games)severity 37% win chance per occurrencen = 1204 in 727 games (weighted 196.6)score 94.9trend: better (-17.5% vs previous 60 days, n 152/148)

2014-08-04 · rapid · move 54
−85%

2026-02-17 · rapid · move 50
−85%

2014-08-04 · rapid · move 48
−38%

All 8 strongest examples

chesscom:a51801e4-fb21-11de-8000-000000010001 ply 106 · −85% · source
chesscom:a7573f32-0c17-11f1-a66e-ec20b701000f ply 98 · −85% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 95 · −38% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 89 · −38% · source
chesscom:b3b0e9d0-fb1e-11de-8000-000000010001 ply 87 · −38% · source
chesscom:9fa83964-30ec-11dd-8000-000000010001 ply 91 · −66% · source
chesscom:69894e76-34b0-11f0-8db7-1f71a801000f ply 134 · −65% · source
chesscom:14a2b2ed-14bc-11f1-bc6e-1bde1b01000f ply 103 · −55% · source

07Allowed the opponent a fork (blunder-check / prophylaxis)

confirmed

9.5 per 100 games (95% CI 7–10 of games)severity 41% win chance per occurrencen = 677 in 613 games (weighted 121.6)score 65.3trend: worse (+19.9% vs previous 60 days, n 96/79)

2023-03-03 · rapid · move 46
played f5e4, best g5c1, −91% · rook forks a5, g5

2025-05-20 · rapid · move 24
played d8e7, best d4e3, −89% · rook forks d4, e7; captures the defender of d4

2016-10-07 · rapid · move 25
played d2h6, best f5e6, −88% · queen forks b2, d4, a5

All 8 strongest examples

lichess:b7bYz7Ew ply 91 · −91% · source
chesscom:154ad1d1-3561-11f0-aeb3-33a01401000f ply 47 · −89% · source
chesscom:84cded82-effc-11e0-8000-000000010001 ply 48 · −88% · source
lichess:VZsMWmlJ ply 58 · −84% · source
chesscom:5c0c9078-810d-11e0-8000-000000010001 ply 21 · −83% · source
lichess:gPd8wZqH ply 50 · −82% · source
chesscom:340e40e4-2695-11e5-8000-000000010001 ply 39 · −46% · source
chesscom:5a478a6a-05ea-11f1-ae77-0d91e401000f ply 34 · −79% · source

08Allowed the opponent a mate in n (blunder-check / prophylaxis)

confirmed

3.9 per 100 games (95% CI 3–5 of games)severity 54% win chance per occurrencen = 308 in 289 games (weighted 49.4)score 41.4trend: worse (+17.3% vs previous 60 days, n 49/37)

2025-05-13 · rapid · move 34
played e8e1, best g3h3, −95% · mate in 1

2010-12-24 · rapid · move 19
played g5g6, best d4e6, −92% · mate in 1

2026-03-06 · rapid · move 33
played f4g5, best f1f3, −91% · mate in 2

All 8 strongest examples

chesscom:a52626b6-3016-11f0-803b-c99e4301000f ply 67 · −95% · source
chesscom:f2ed20a8-35f1-11dd-8000-000000010001 ply 37 · −92% · source
chesscom:e05dea2e-1982-11f1-8302-f6e88001000f ply 64 · −91% · source
chesscom:6143a128-dc1c-11dd-8000-000000010001 ply 38 · −90% · source
lichess:4U3O3TCM ply 82 · −90% · source
lichess:xexQ7X4b ply 59 · −61% · source
chesscom:54ba3f64-0abb-11f1-9015-a4964e01000f ply 74 · −54% · source
chesscom:fa4bc7b9-08bc-11f1-9015-a4964e01000f ply 33 · −51% · source

09Mistakes and blunders inside the first 10 moves

confirmed

7.6 per 100 games (95% CI 6–8 of games)severity 33% win chance per occurrencen = 557 in 503 games (weighted 98.0)score 37.5trend: worse (+18.3% vs previous 60 days, n 70/52)

2012-06-04 · rapid · move 9
−85%

2016-11-16 · rapid · move 5
−73%

2024-12-11 · correspondence · move 6
−61%

All 8 strongest examples

chesscom:8cba0d6e-b6fc-11dd-8000-000000010001 ply 16 · −85% · source
chesscom:9bd5db50-0e03-11e1-8000-000000010001 ply 8 · −73% · source
chesscom:2bcfa1ae-ae8d-11ef-b534-db421f01000b ply 10 · −61% · source
chesscom:d3546d00-3ab5-11dd-8000-000000010001 ply 10 · −58% · source
chesscom:ff128c8c-b963-11de-8000-000000010001 ply 11 · −33% · source
chesscom:6c05a4a6-c00f-11e0-8055-00000001000b ply 15 · −54% · source
chesscom:0ebe2326-c010-11e0-807f-00000001000b ply 19 · −52% · source
chesscom:6c05a4a6-c00f-11e0-8055-00000001000b ply 19 · −52% · source

10Allowed the opponent a royal fork (blunder-check / prophylaxis)

confirmed

5.4 per 100 games (95% CI 4–6 of games)severity 43% win chance per occurrencen = 398 in 367 games (weighted 69.3)score 36.8trend: worse (+20.8% vs previous 60 days, n 53/41)

2023-03-03 · rapid · move 46
played f5e4, best g5c1, −91% · rook forks a5, g5

2025-07-31 · rapid · move 30
played g4g5, best a1c3, −84% · queen forks c1, g2, f4

2019-04-29 · rapid · move 20
played e6e4, best d8e8, −46% · knight forks e4, d7, g8; captures the defender of e4

All 8 strongest examples

lichess:b7bYz7Ew ply 91 · −91% · source
lichess:VZsMWmlJ ply 58 · −84% · source
chesscom:340e40e4-2695-11e5-8000-000000010001 ply 39 · −46% · source
chesscom:5a478a6a-05ea-11f1-ae77-0d91e401000f ply 34 · −79% · source
chesscom:f87b116a-7d7a-11ee-846d-e5688201000b ply 72 · −78% · source
lichess:iW0QmyNh ply 31 · −73% · source
lichess:VK9by0Gw ply 64 · −67% · source
chesscom:137aa1f9-266d-11f0-ac22-4feaa501000f ply 52 · −56% · source

11Missed your own fork (calculation / board vision)

confirmed

5.1 per 100 games (95% CI 4–6 of games)severity 40% win chance per occurrencen = 393 in 358 games (weighted 65.0)score 33.6trend: flat (-3.8% vs previous 60 days, n 45/43)

2025-05-20 · rapid · move 24
played d8e7, best d4e3, −89% · bishop forks d2, f4; defender of f4 dragged away

2026-01-31 · rapid · move 25
played a4a6, best c6e7, −79% · knight forks f5, c8

2012-10-04 · rapid · move 22
played d3e3, best d3b5, −78% · knight forks a3, c7

All 8 strongest examples

chesscom:154ad1d1-3561-11f0-aeb3-33a01401000f ply 47 · −89% · source
chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 48 · −79% · source
chesscom:0bbcc3bc-dc1f-11dd-8000-000000010001 ply 42 · −78% · source
chesscom:bad20994-810d-11e0-8000-000000010001 ply 60 · −77% · source
chesscom:6c05a4a6-c00f-11e0-8055-00000001000b ply 25 · −71% · source
chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 46 · −70% · source
chesscom:ea89e6b1-28d0-11f0-a433-742bf401000f ply 67 · −48% · source
chesscom:c059a81e-aa72-11f0-98f0-1f5aca01000f ply 108 · −93% · source

12Missed your own sacrifice (calculation / board vision)

confirmed

4.5 per 100 games (95% CI 3–6 of games)severity 38% win chance per occurrencen = 327 in 307 games (weighted 57.5)score 32.6trend: worse (+17.1% vs previous 60 days, n 43/37)

2017-07-11 · correspondence · move 17
played g7e8, best c5d4, −64% · gives up 2 before winning it back

2022-09-02 · rapid · move 39
played g2f1, best a7f2, −48% · gives up 9 before winning it back

2025-06-11 · rapid · move 50
played a3a2, best c2c5, −47% · gives up 2 before winning it back

All 8 strongest examples

chesscom:9d14b8ea-4e73-11e7-83be-00000001000b ply 33 · −64% · source
lichess:djNplwge ply 76 · −48% · source
chesscom:a053b074-4681-11f0-8cb1-1d689101000f ply 98 · −47% · source
chesscom:69038a9b-e325-11f0-b953-0b1ef401000f ply 51 · −93% · source
chesscom:9732d8b4-d450-11f1-acd9-9b9ddd01000f ply 76 · −92% · source
chesscom:07350529-8d93-11f1-ab78-9c3c7501000f ply 68 · −92% · source
chesscom:84533279-be97-11f1-8dbb-feb0c301000f ply 71 · −92% · source
lichess:eJEoBXsL ply 61 · −90% · source

13Allowed the opponent a sacrifice (blunder-check / prophylaxis)

confirmed

4.6 per 100 games (95% CI 3–6 of games)severity 38% win chance per occurrencen = 314 in 294 games (weighted 59.0)score 30.1trend: flat (+7.6% vs previous 60 days, n 39/39)

2022-09-02 · rapid · move 30
played a7a4, best b6c6, −83% · gives up 3 before winning it back

2025-05-05 · rapid · move 25
played e6e1, best e6e3, −76% · gives up 6 before winning it back

2025-05-08 · rapid · move 30
played f5d4, best f5h4, −71% · gives up 2 before winning it back

All 8 strongest examples

lichess:bpDfc910 ply 59 · −83% · source
chesscom:7726cb44-29f6-11f0-b781-09e22c01000f ply 48 · −76% · source
chesscom:1f3c5100-2c14-11f0-b97f-33298001000f ply 59 · −71% · source
lichess:VK9by0Gw ply 64 · −67% · source
chesscom:42ce2e79-1115-11f1-a192-f22e4601000f ply 37 · −56% · source
chesscom:54ba3f64-0abb-11f1-9015-a4964e01000f ply 74 · −54% · source
chesscom:8118ad8e-14da-11f1-bc6e-1bde1b01000f ply 68 · −53% · source
chesscom:86435c26-6d98-11ed-829e-5cd0f801000b ply 21 · −52% · source

14Allowed the opponent a knight fork (blunder-check / prophylaxis)

confirmed

4.2 per 100 games (95% CI 3–5 of games)severity 39% win chance per occurrencen = 315 in 292 games (weighted 54.0)score 29.0trend: worse (+45.6% vs previous 60 days, n 46/35)

2016-05-03 · rapid · move 11
played f5e6, best e7e6, −83% · knight forks g7, d8; defender of e6 dragged away

2016-01-03 · rapid · move 26
played f7d6, best d3b1, −82% · knight forks e1, f4

2019-04-29 · rapid · move 20
played e6e4, best d8e8, −46% · knight forks e4, d7, g8; captures the defender of e4

All 8 strongest examples

chesscom:5c0c9078-810d-11e0-8000-000000010001 ply 21 · −83% · source
lichess:gPd8wZqH ply 50 · −82% · source
chesscom:340e40e4-2695-11e5-8000-000000010001 ply 39 · −46% · source
lichess:CG18yfgz ply 40 · −74% · source
lichess:iW0QmyNh ply 31 · −73% · source
lichess:VK9by0Gw ply 64 · −67% · source
chesscom:9d14b8ea-4e73-11e7-83be-00000001000b ply 33 · −64% · source
chesscom:08b02ec1-3fe5-11f0-ad6b-5758b201000f ply 34 · −59% · source

15Allowed the opponent a queen fork (blunder-check / prophylaxis)

confirmed

2.7 per 100 games (95% CI 2–3 of games)severity 45% win chance per occurrencen = 190 in 180 games (weighted 34.1)score 19.1trend: worse (+16.3% vs previous 60 days, n 26/20)

2016-10-07 · rapid · move 25
played d2h6, best f5e6, −88% · queen forks b2, d4, a5

2025-07-31 · rapid · move 30
played g4g5, best a1c3, −84% · queen forks c1, g2, f4

2026-02-09 · rapid · move 18
played h2g3, best f2g3, −79% · queen forks g1, e3

All 8 strongest examples

chesscom:84cded82-effc-11e0-8000-000000010001 ply 48 · −88% · source
lichess:VZsMWmlJ ply 58 · −84% · source
chesscom:5a478a6a-05ea-11f1-ae77-0d91e401000f ply 34 · −79% · source
chesscom:137aa1f9-266d-11f0-ac22-4feaa501000f ply 52 · −56% · source
chesscom:cabe0b1e-d226-11e4-8000-000000010001 ply 51 · −48% · source
chesscom:226375a2-a50c-11f1-856c-7c639201000f ply 84 · −92% · source
chesscom:cca424d8-30d2-11f0-8e06-64e86301000f ply 111 · −45% · source
chesscom:64dae2a7-2f33-11f1-9396-c9874a01000f ply 83 · −89% · source

16Missed your own royal fork (calculation / board vision)

confirmed

2.5 per 100 games (95% CI 2–3 of games)severity 43% win chance per occurrencen = 202 in 190 games (weighted 32.5)score 16.9trend: better (-23.7% vs previous 60 days, n 20/22)

2026-01-31 · rapid · move 25
played a4a6, best c6e7, −79% · knight forks f5, c8

2011-08-08 · correspondence · move 13
played d7d6, best g2g3, −71% · queen forks e1, h4; captures the defender of h4

2026-01-31 · rapid · move 24
played f2f4, best c6e7, −70% · knight forks f5, c8

All 8 strongest examples

chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 48 · −79% · source
chesscom:6c05a4a6-c00f-11e0-8055-00000001000b ply 25 · −71% · source
chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 46 · −70% · source
chesscom:ea89e6b1-28d0-11f0-a433-742bf401000f ply 67 · −48% · source
chesscom:c059a81e-aa72-11f0-98f0-1f5aca01000f ply 108 · −93% · source
chesscom:70a24c2b-5676-11f1-9dde-fdc6d501000f ply 53 · −93% · source
chesscom:a92e9ac1-2239-11f1-b930-f93bbe01000f ply 95 · −83% · source
chesscom:a79447bf-7ae8-11f1-8e4f-c7552801000f ply 85 · −82% · source

17Missed your own mate in n (calculation / board vision)

confirmed

1.4 per 100 games (95% CI 1–2 of games)severity 55% win chance per occurrencen = 117 in 110 games (weighted 18.5)score 16.0trend: better (-52.7% vs previous 60 days, n 13/25)

2025-05-13 · rapid · move 34
played e8e1, best g3h3, −95% · mate in 1

2025-05-05 · rapid · move 42
played f2f1, best f2h2, −93% · mate in 1

2017-01-08 · rapid · move 26
played g7g6, best e4h1, −52% · mate in 1

All 8 strongest examples

chesscom:a52626b6-3016-11f0-803b-c99e4301000f ply 67 · −95% · source
chesscom:6b24f051-29f3-11f0-a433-742bf401000f ply 83 · −93% · source
chesscom:1722e728-3b3e-11e1-8000-000000010001 ply 51 · −52% · source
chesscom:5f88f457-c0f4-11f1-8dbb-feb0c301000f ply 44 · −95% · source
chesscom:08fe4899-90a2-11f1-a45b-2a558601000f ply 82 · −95% · source
chesscom:ff1a264d-bf62-11f1-8dbb-feb0c301000f ply 68 · −94% · source
chesscom:a1a9fead-f08e-11f0-be0e-06112901000f ply 114 · −92% · source
chesscom:07350529-8d93-11f1-ab78-9c3c7501000f ply 68 · −92% · source

18Allowed the opponent a discovered attack (blunder-check / prophylaxis)

confirmed

2.0 per 100 games (95% CI 1–3 of games)severity 38% win chance per occurrencen = 155 in 142 games (weighted 26.3)score 14.6trend: better (-21.6% vs previous 60 days, n 17/21)

2023-11-28 · correspondence · move 37
played e5e6, best g3f3, −78% · rook forks g3, e6; pinned queen on g6 attacked and won; discovered attack on g6

2026-04-05 · blitz · move 23
played d6d3, best a6b7, −84% · discovered attack on f5

2026-05-23 · blitz · move 41
played b3c3, best b3d3, −82% · discovered attack on c3

All 8 strongest examples

chesscom:f87b116a-7d7a-11ee-846d-e5688201000b ply 72 · −78% · source
chesscom:6bfad64d-310e-11f1-aa32-4f80a001000f ply 45 · −84% · source
chesscom:c76dc4d2-5678-11f1-9dde-fdc6d501000f ply 80 · −82% · source
chesscom:bddae839-3e19-11f0-9c07-a26ebd01000f ply 44 · −37% · source
chesscom:bddae839-3e19-11f0-9c07-a26ebd01000f ply 42 · −36% · source
chesscom:52d5f5d0-ff61-11e5-82be-00000001000b ply 46 · −35% · source
lichess:tQ1cAR6v ply 37 · −34% · source
chesscom:73d74297-bb2f-11f1-b492-d9079701000f ply 45 · −65% · source

19Missed your own knight fork (calculation / board vision)

confirmed

2.1 per 100 games (95% CI 1–3 of games)severity 39% win chance per occurrencen = 166 in 147 games (weighted 27.4)score 13.7trend: flat (-4.4% vs previous 60 days, n 20/18)

2026-01-31 · rapid · move 25
played a4a6, best c6e7, −79% · knight forks f5, c8

2012-10-04 · rapid · move 22
played d3e3, best d3b5, −78% · knight forks a3, c7

2026-01-31 · rapid · move 24
played f2f4, best c6e7, −70% · knight forks f5, c8

All 8 strongest examples

chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 48 · −79% · source
chesscom:0bbcc3bc-dc1f-11dd-8000-000000010001 ply 42 · −78% · source
chesscom:29eff283-fed7-11f0-ab48-eec2f701000f ply 46 · −70% · source
chesscom:ea89e6b1-28d0-11f0-a433-742bf401000f ply 67 · −48% · source
chesscom:70a24c2b-5676-11f1-9dde-fdc6d501000f ply 53 · −93% · source
chesscom:7a9ee807-fc9b-11f0-8af9-54b7ba01000f ply 108 · −82% · source
chesscom:b5e10c45-26ef-11f1-9cba-64284d01000f ply 56 · −78% · source
chesscom:e27f1842-1ee5-11f1-827c-675e9701000f ply 38 · −77% · source

20Missed your own queen fork (calculation / board vision)

confirmed

1.7 per 100 games (95% CI 1–2 of games)severity 42% win chance per occurrencen = 130 in 126 games (weighted 21.4)score 11.3trend: flat (-1.2% vs previous 60 days, n 15/13)

2016-05-03 · rapid · move 31
played h1h2, best a7c7, −77% · queen forks c6, d8

2011-08-08 · correspondence · move 13
played d7d6, best g2g3, −71% · queen forks e1, h4; captures the defender of h4

2026-07-08 · blitz · move 43
played h5g4, best h5e5, −82% · queen forks e2, a3

All 8 strongest examples

chesscom:bad20994-810d-11e0-8000-000000010001 ply 60 · −77% · source
chesscom:6c05a4a6-c00f-11e0-8055-00000001000b ply 25 · −71% · source
chesscom:a79447bf-7ae8-11f1-8e4f-c7552801000f ply 85 · −82% · source
chesscom:ae2ea3b0-3c6a-11e5-81ce-00000001000b ply 35 · −40% · source
chesscom:d71aad63-2b46-11f0-b0e3-83087301000f ply 39 · −39% · source
chesscom:ee4b038a-b66d-11f1-bbdf-8eeeee01000f ply 106 · −76% · source
chesscom:9d5af201-bac6-11f1-b492-d9079701000f ply 59 · −75% · source
chesscom:741bf9eb-effd-11f0-abbe-32189c01000f ply 44 · −71% · source

Game data from Chess.com (Published-Data API) and Lichess (open API and CC0 database). Engine analysis by Stockfish. Ratings from FIDE. Board design is our own. Data generated 2026-11-10 20:51 UTC.