| −1 | 1 | Range of movement |
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| Refers to the optimum move variants available in one position: Closed – there is just one optimum move (CL), Semiopen – 2 optimum moves (SO), Open – more than 2 optimum moves (OP) |
| 2 | Existing pressures |
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| No (NN), threat of check (TC), threat of capture (TP), threat of tactical issue (TT) |
| 3 | Context of the error |
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| At material advantage (MA), at material disadvantage (MD), at material equality (ME), after final error (AE) |
| 4 | Optimal type of movement |
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| Capture (CT), check (CK), counter-attack (CA), build-up (BU), offensive (OF), defensive (DF) |
| 5 | Optimal consequence |
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| Checkmate (CH), material (ML), stalemate (SM), crowning (CR), positional advantage (PA) |
| 0 | 6 | Type of error |
|
| Checkmate: Checkmate potential (CM), checkmate not given (MN); undefended pieces: defencelessness potential (UP), defencelessness not given (DN); tactical motifs: tactical motifs potential (TM), tactical motifs not given (TA); subtle mistake: subtle mistake potential (SU), subtle mistake not given (SG) |
| 7 | Seriousness of the error |
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| Mistake (MK), Blunder (BL) |
| 8 | Piece from the side of error |
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| Pawn (PN), Knight (KT), Bishop (BS), Rook (RK), Queen (QE), King (KG) |
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| 8.1 | Piece suitability | The piece moved erroneously suffers the consequence of the error (YS), another piece from the same side (NO) |
| 9 | Colour |
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| White (WI), black (BA) |
| 10 | Phase |
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| Opening (ON), mid-game (MG), endgame (EN) |
| 11 | Zone |
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| Starts: Own start (OS), opponent’s start (ST); flanks: own flanks (FK), opponent’s flanks (FL); centre: own centre (CE), opponent’s centre (OR) |
| 12 | Type of movement performed |
|
| Capture (CP), check (CC), counter-attack (CN), build-up (BP), offensive (FF), defensive (DV) |
| 13 | Specific type of error | 13.1 | Type of checkmate | Weaknesses on square f7-f2 (WF), two pieces on castling (TL), three pieces on castling (TE), king in centre (KC), on edges (KE), elementary endgame (EE) |
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|
| 13.2 | Reason for capture and defencelessness | Single piece (SP), poorly protected piece (PR), multi-cell count (MC) |
|
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| 13.3 | Known tactical motifs | Doubles (DO), spikes (SK), destructions (DE), trapped piece (TR), draw (DW), defensive resource (DR), pawn promotion (PP), other (OT) |
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| 13.4 | Subtle mistake | King’s security (KS), passed pawn (PD), forced delivery of material (FO), pawn structure (PS), simplification (SF), passed-pawn blocking (BK), dynamic advantage (DY) |
| +1 | 14 | Number of different pieces |
|
| 1 - 2 (PI), 3 - 5 (PT), +5 (PF) |
| 15 | Consequence zone |
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| Starts: Own start (SA), opponent’s start (NT); flanks: own flanks (FN), opponent’s flanks (FS); centre: own centre (CI), opponent’s centre (CU) |
| 16 | Number of turns |
|
| Turns which take place between the error being detected and it being produced on the board: 1 movement (MO), 2 movements (MT), 3 movements (MH), 4 movements (MF), 5 movements (FM), more than 5 movements (FI), wide open (WO) |
| 17 | 17.1 Piece(s) giving | 17.1. 1 | First piece gives | Pawn (PW), knight (NA), bishop (BI), rook (RO), queen (QN), king (KI) |
| 17.1. 2 | Second piece gives | Pawn (PU), knight (NG), bishop (BH), rook (RU), queen (QI), king (KN) |
| 17.2 Piece(s) receiving | 17.2. 1 | First piece receives | Pawn (PV), knight (NI), bishop (BO), rook (RA), queen (QH), king (KM) |
| 17.2. 2 | Second piece receives | Pawn (PO), knight (NH), bishop (BB), rook (RR), queen (QM), King (KK) |
| 18 | Simultaneity of tactical aspects |
|
| Yes: 1 (SI), 2 (TW), 3 + (TH); no: no (SN) |
| 19 | Real consequence |
|
| Not exploited (NE), exploited (EX) |
| 20 | Impact of the error |
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| Definitive (DI), non definitive (NF) |
| 21 | Range of movement |
|
| Closed (CO), Semi-open (SC), Open (OE) |
