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postmortem

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AN
Adaeze Nwosu
13 Feb 2026

I lost a won endgame and I want you to see it

A Lucena position I knew cold, and the one move on move 61 where I stopped asking which piece was supposed to move. Full annotation, clock times included.

chessendgamesfield-notes
★stars: 117 min read
DW
Dan Whitlock
17 Nov 2025

Postmortem: 43 minutes of 502s and one very confident regex

Our gateway returned 502 for forty three minutes because of a regex I would have approved too. Full timeline, the pattern, and the dashboard that lied to me.

debuggingpostmortemsre
★stars: 79 min read

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