You complete Needle when every card reaches the required foundation under this profile's rank, suit, direction, and access constraints. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
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You complete Needle when every card reaches the required foundation under this profile's rank, suit, direction, and access constraints. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
Complete guide
Needle uses the independently implemented Needle PySolFC 3.6.1 rules profile v1 profile (R404). Needle is a complete deterministic browser game whose distinct rules centre on A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward.
Needle opens from a versioned seeded position built for A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.
Every Needle action is checked against the current board, available material, and this defining restriction: A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward. Invalid, stale, or post-terminal actions leave the position unchanged.
You complete Needle when every card reaches the required foundation under this profile's rank, suit, direction, and access constraints. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim. Near the end of Needle, recount the remaining obligations needed until every card reaches the required foundation under this profile's rank, suit, direction, and access constraints. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.
A practical Needle plan is to preserve several legal continuations around A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing. A common Needle error is to ignore the boundary rule that A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.
Needle has its own runtime and save identity because its rules require A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward.
A symmetric 8/8/4/2/0/2/4/8/8 tableau surrounds a shared source-and-destination reserve; single cards build alternating-color downward.
Needle stores its game ID, rules version, and seeded deal identity. Those values recreate the same opening locally without promising that the position is forced or winnable.
