# ETM

The **execution turn metric** (ETM), is a metric for the 3x3x3 where any perceived movement counts as a turn; this includes rotations. Therefore, the interpretation of this metric can be somewhat subjective. For example, U2 can be either 1 or 2 moves.

ETM was designed for measuring 'true' TPS by David Woner. It is intended mainly for reconstructions, where videos are available to see how many movements were actually performed.

## Example reconstruction ETM count

http://www.youtube.com/watch?v=puk3bbS86NE

Scramble: L2 R2 U2 L2 U F2 L2 F2 U L B2 F' R B2 U' B F L F2 D'

Cross: L2 u R' F' (4 ETM, obvious)

F2L 1: L' U' L d R' U R (7 ETM, obvious)

F2L 2: y' R U' R' U2 R U' R' (8 ETM, rotation requires regrip so it is counted)

F2L 3+4: y L U2 L' R U R' (7 ETM, rotation counts, L' R counts as two moves not one, because it is performed as such)

OLL: M U' M' U' U' M U' M' (8 ETM, Slice moves are performed as slices here. The U2 is two flicks with the left index, thus two moves.

PLL: R' U2 R U' U' R' F R U R' U' R' F' R2 U' (15 ETM, the first U2 is an index-middle double flick with the right hand, thus one move. The second is two left indexes again, thus two. R2 is a single wrist turn, thus one.)

Total solve: 56 QTM/49 HTM/44 STM/49 ETM