3x3 Speedcubing: The Ultimate Limits Forecast
History · Methods · Hardware · Math · Biomech · Top Cubers · Training · Statistics — toward a single & average forecast.
Famous Reconstructions
Every WR single = (scramble, solution, STM, TPS) signature. Stacked: TPS rises continuously; STM drops in jumps from lucky scrambles + method shifts. Wang 45 STM × 14.61 TPS (TPS path); Geng 33 STM × 10.81 TPS (efficient path); Zajder 29 STM × 10.50 TPS (combo path).
R2 D B U F2 R' B U' R' L F2 R' U2 F2 R2 U2 F2 L2 D L'y2 R' U F2 D2 L D R' U2 R // X-cross + 1st F2L (U) y R U R' // 2nd pair U' R U2 R' U R U' R' // 3rd pair U L' U L // 4th pair U' (LL skip = AUF only)
极幸运 scramble + X-cross + OLL skip + 1-look PLL. 49 STM × 6.92 TPS 这把单次站住 WR 854 天, 到 2010-11 Zemdegs 才超过.
source ↗First WR with factory-style magnets (Chris Tran 手装的 Valk 3 磁铁版).
F U2 L2 B2 F' U L2 U R2 D2 L' B L2 B' R2 U2z2 F' R U' R2 U F // XX-cross U' R U' R' // 3rd pair U' R U R' U R U' R' // 4th pair U R U R' U R U2 R' // OLL U // AUF
社区公认最幸运的 WR — 27 STM 极低. 站了 4 年 7 个月, 到 2023-06 Park 3.13 才被打破.
source ↗F2 D' R2 B2 L2 D' L2 D' F2 U' B L F' L' U2 F2 R2 U'z2 y' R' U' F2 D' L2 // double X-cross U R U R' U' R U' R' // 3rd pair U2 R U' R' U R U' R' // 4th pair F R U R' U' F' // OLL (PLL skip) U // AUF
TPS 从 Du 7.78 跳到 Park 10.54 — 磁铁 + 智能魔方训练时代的交汇.
WR 级最高持续 TPS. 全程 CFOP, 说明 CFOP 还有空间.
人类首次单次 sub-3. XXX-cross = cross 阶段顺手出 3 个 F2L 对. ZBLL 一个算法替代 OLL+PLL.
Key cross-comparison: Du's 27 STM is fewer than Zajder's 29, but Du was only 7.78 TPS. Hand Du's scramble to Zajder-level TPS: 27/14 ≈ 1.9 s. This is the source of "100-yr reachable ~1.5 s" — Du's STM + Wang's TPS = "stacked optimum of living cubers".