Research archive
Research
Deep dives, performance notes, engine experiments, and technical write-ups published with enough structure to stand on their own later.
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GPUPerft Export Codec and Encoding Lab
A staging research note on GPUPerft export encoding: sorted NB-state rows, ANS, XOR-byteplane transforms, and the current writer-cadence bottleneck.
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Hash Verification Is Not Collision-Proof at Perft(15) Scale
A correctness-engineering note on why compact 64-bit hash verification is useful but not a proof of exact position identity at high-depth perft scale.
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GPUPerft CDP2v2 Workload-Aware Allocator Validation
A staging validation note showing a 66.90% aggregate wall-time improvement across the standard CDP2v2 corpus, with no real regressions after recheck.
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GPUPerft CDP2 Verify Corpus
The built-in GPUPerft CDP2 verification corpus: CPW positions, mate nets, compact endgames, deterministic random-walk positions, and Stockfish-backed reference counts.
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Perft at Scale: Building a Reliable Verification Pipeline
A working research note on large-scale perft validation, hardware context, and the shape of a trustworthy verification workflow.