Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠). In this engine-verified Cockroach Pig (曱甴路 (Gaat Jaat Lou)) walkthrough, we inspect Mark #1 at Big Road Column 5, Row 1 (looking 3 columns back to Column 1) and trace every step through describeMarkSteps().
RW-CP-R1-BLUE (Cockroach Pig, Lookback 3): Mark #1 at Big Road Column 5, Row 1 → Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠).
Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠).
Common table reading watchout: Comparing the wrong columns. Compare Column 4, the one that just finished, with Column 1.
Compares Big Road columns separated by 3 columns.
Triggers Rule 1 (Starting a New Column).
Rendered with crisp SIGNAL white (#F4F5F6) lookback boxes.
Steps: 1. Column 5 starts, so use Rule 1: compare Column 4 with Column 1, 3 columns further back. 2. Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠).
Next-hand probe on this board: If B → -, If P → -.
When the column that just finished (`Column C - 1`) has a different bead count than the column 3 positions further left (`Column C - 4`), starting `Column C` at Row 1 triggers a Blue (≠) slash on Cockroach Pig.
In `BBPPBBBPB...`, Column 1 has 2 Banker beads (`BB`), Column 2 has 2 Player beads (`PP`), Column 3 has 3 Banker beads (`BBB`), and Column 4 finishes with 1 Player bead (`P`). When Hand 9 starts Column 5 at Row 1 (`B`), Cockroach Pig compares Column 4 (1 bead) with Column 1 (2 beads). Because 1 bead and 2 beads differ, Cockroach Pig marks a Blue (≠) slash.
Our locked road engine summarizes this exact mark in two steps: 1. Column 5 starts, so use Rule 1: compare Column 4 with Column 1, 3 columns further back. 2. Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠).
| Derived Mark | Big Road Position | Rule Applied | Verdict | describeMark() Explanation |
|---|---|---|---|---|
| Mark #1 (Featured) | Col 5, Row 1 | Rule 1 (New Column) | Blue (≠) | Column 4 has 1 bead. Column 1 has 2 beads. Different depth → blue (≠). |
| Mark #2 | Col 6, Row 1 | Rule 1 (New Column) | Blue (≠) | Column 5 has 1 bead. Column 2 has 2 beads. Different depth → blue (≠). |
| Mark #3 | Col 6, Row 2 | Rule 2 (Continue Down) | Red (=) | This bead is at Row 2. Column 3 has a bead at Row 2 too → red (=). |
| Mark #4 | Col 6, Row 3 | Rule 2 (Continue Down) | Red (=) | This bead is at Row 3. Column 3 has a bead at Row 3 too → red (=). |
| Mark #5 | Col 7, Row 1 | Rule 1 (New Column) | Red (=) | Column 6 has 3 beads. Column 3 has 3 beads. Same depth → red (=). |
| Mark #6 | Col 7, Row 2 | Rule 2 (Continue Down) | Blue (≠) | This bead is at Row 2. Column 4 stopped at Row 1, one row above → blue (≠). |
Use `describeMarkSteps()` at the table: first identify the column that just finished (`Column 4`), then count 3 columns back (`Column 1`), and compare their two bead totals.
Across the full 34-hand board for RW-CP-R1-BLUE, Cockroach Pig records 26 total marks (13 Red = and 13 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.
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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.
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Macau Cantonese, French, and mathematical table terms explained in plain English with road diagrams.
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