Plus and minus in Hindi captchas
2026-02-09 · Hindi captchas
The operator is part of the image. The engine applies it. You do not send plus or minus yourself.
The picture contains the operator. A minus that looks like a short dash is still minus. The expression uses + or - in ASCII so logs stay easy to read.
You cannot override the operator in JSON. If you think the sign was read wrong, look at expression and raw. A reliable answer that the portal rejects can be reported.
Multiplication and division are not the Hindi portal pattern this engine targets. Those images should be treated as ordinary captchas only if they are really digit text. Do not force hindi on them.
The measured Hindi set was live portal captchas, additions and subtractions, and the score was 100% on 175 unseen images.
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