This bead is at Row 2. Column 1 has a bead at Row 2 too → red (=). In this engine-verified Small Road (小路 (Siu Lou)) walkthrough, we inspect Mark #1 at Big Road Column 3, Row 2 (looking 2 columns back to Column 1) and trace every step through describeMarkSteps().
RW-SR-START (Small Road, Lookback 2): Mark #1 at Big Road Column 3, Row 2 → This bead is at Row 2. Column 1 has a bead at Row 2 too → red (=).
This bead is at Row 2. Column 1 has a bead at Row 2 too → red (=).
Common table reading watchout: Thinking "no bead at this row" means blue. It is blue only when Column 1 stopped exactly one row above this bead.
Compares Big Road columns separated by 2 columns.
Triggers Rule 2 (Continuing Down a Column).
Rendered with crisp SIGNAL white (#F4F5F6) lookback boxes.
Steps: 1. Column 3 goes down to Row 2, so use Rule 2: look 2 columns back, at Column 1. 2. Column 1 has a bead at Row 2 too → red (=).
Next-hand probe on this board: If B → -, If P → -.
The Small Road (小路, rendered with solid red and blue circles) uses a lookback distance of 2 columns. Because it looks 2 columns further back than the current position, it requires one additional Big Road column of history compared to Big Eye Boy before it can place its first solid dot.
Specifically, Small Road cannot start in Columns 1 or 2, and cannot start at Column 3 Row 1 (because Rule 1 at Column 3 Row 1 would need to compare Column 2 with Column `2 - 2 = 0`, which does not exist). Therefore, Small Road places its first solid circle at Column 3 Row 2 (comparing against Column `3 - 2 = 1`) OR at Column 4 Row 1 (comparing finished Column 3 against Column `3 - 2 = 1`), whichever comes first.
Our locked road engine summarizes this exact mark in two steps: 1. Column 3 goes down to Row 2, so use Rule 2: look 2 columns back, at Column 1. 2. Column 1 has a bead at Row 2 too → red (=).
| Derived Mark | Big Road Position | Rule Applied | Verdict | describeMark() Explanation |
|---|---|---|---|---|
| Mark #1 (Featured) | Col 3, Row 2 | Rule 2 (Continue Down) | Red (=) | This bead is at Row 2. Column 1 has a bead at Row 2 too → red (=). |
| Mark #2 | Col 3, Row 3 | Rule 2 (Continue Down) | Blue (≠) | This bead is at Row 3. Column 1 stopped at Row 2, one row above → blue (≠). |
| Mark #3 | Col 4, Row 1 | Rule 1 (New Column) | Blue (≠) | Column 3 has 3 beads. Column 1 has 2 beads. Different depth → blue (≠). |
| Mark #4 | Col 4, Row 2 | Rule 2 (Continue Down) | Red (=) | This bead is at Row 2. Column 2 has a bead at Row 2 too → red (=). |
| Mark #5 | Col 5, Row 1 | Rule 1 (New Column) | Red (=) | Column 4 has 2 beads. Column 2 has 2 beads. Same depth → red (=). |
| Mark #6 | Col 6, Row 1 | Rule 1 (New Column) | Blue (≠) | Column 5 has 1 bead. Column 3 has 3 beads. Different depth → blue (≠). |
In our sequence `BBPPBBB...`, Column 1 has 2 beads (`BB`), Column 2 has 2 beads (`PP`), and when Column 3 reaches Row 2 (`BB`), Small Road records its very first mark by looking 2 columns back to Column 1 Row 2.
Across the full 34-hand board for RW-SR-START, Small Road records 29 total marks (13 Red = and 16 Blue ≠). Remember that each hand in an 8-deck shoe is an independent event and derived roads describe past column symmetry rather than predicting the next winner.
Enter any sequence to inspect the Big Road, Big Eye Boy, Small Road, Cockroach Pig, and next-hand previews.
About 64 minutes of lessons covering outcomes, the Bead Plate, Big Road columns, and dragon tails.
Train Third-Card Rule decisions, depth counting, lookback column references, and derived-road speed recognition.
Visual step-by-step breakdowns with closed captions, chapter markers, and full searchable transcripts.
Macau Cantonese, French, and mathematical table terms explained in plain English with road diagrams.
Direct answers to real student questions on dragon tails, tie handling, lookback rules, and table variants.
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