Hello!
With regards to official solve stats, what does ETM / ETPS / STM / STPS mean?
ETM - Execution Turn Metric. Rotations (and combinations), outer block moves, and slice moves each count as one move.
ETPS - Execution Turns per Second. For one solve, ETPS (ETM/sec) = movecount (ETM) / time (sec).
STM - Slice Turn Metric. Rotations (and combinations) count as one move. Outer block moves and slice moves each count as one move.
STPS - Slice Turns per Second. For one solve, STPS (STM/sec) = movecount (STM) / time (sec).
Example solution:
Scramble: B2 R2 U B2 U' F2 L2 B2 D R2 U2 B' U F' R U L R U' B'
Moves per step are in brackets [STM|ETM]
x2 // inspection [0|0] (note: inspection rotations are never counted)
D' L' U F' U' F2 x2' // 2x2x2 [6|7]
y' R2 U R2 U' R // 2x2x3 [5|6]
y' U R U R' U R U' R2' // F2L-1 [8|9]
y' U' R U R U R U' R' U' R' // EOLS [10|11]
R2 U2 R' D' r U2 r' D R2 U' R // COLL [11|11]
U2 M2' U M' U2 M U M2' // PLL [8|8]
Time: 11.91 seconds
Total Movecounts: 48 STM | 52 ETM
Turns Per Second (TPS): 4.03 STPS | 4.37 ETPS
Other turn metrics:
OBTM (classically HTM) - Outer Block Turn Metric (Half-Turn Metric). Rotations count as zero moves. Outer block turns (U, U' U2, Uw, 3Uw2, et al.) count as one move. Slice moves count as two moves.
This is the official turn metric for Fewest Moves.
OBQTM (classically QTM) - Outer Block Quarter-Turn Metric (Quarter-Turn Metric). Rotations count as zero moves. Outer block turns of 90 degrees (U, U', Uw, 3Uw', etc.) count as one move. Outer block turns of 180 degrees (U2, Uw2, etc.) count as two moves. Slice turns of 90 degrees (M, E', etc.) count as two moves. Slice turns of 180 degrees (M2 etc.) count as four moves.
SQTM - Slice Quarter-Turn Metric. Same as OBQTM, except: slice turns of 90 degrees count as one move, and of 180 degrees count as two moves.
