Truco - Baixada

Each chart shows how the solve plays every possible holding at one decision. With all three cards unknown the lab never squeezes them into one flat grid: it draws exact blocks — one card pinned per block, the other two on the axes — so every cell is exactly one holding, never a family.

The reader below turns up a 5 (v5), so the 6s are the manilhas: they beat everything, they carry their suit — 6♣ > 6♥ > 6♠ > 6♦ — and each is a single card, so a manilha row or column holds exactly one copy and appears alone. Plain ranks ignore suit entirely: a 3 is any 3.

§ 1

Finding a hand

Pin your weakest card to pick the block (this reader begins at L = 7), then run your highest card down the rows and your middle card across the columns. The brass label is itself the control — click it to change both the pinned slot and the one card this chart holds fixed. Hover or tap any cell —

H \ M	6♥	6♠	6♦	3	2	A	K	J	Q	7
6♣	50	100	100	100	100	100	100	100	100	100
6♥		57	100	100	100	100	100	100	100	100
6♠			52	81	100	100	100	100	100	100
6♦				96	100	100	100	100	100	100
3				100	100	100	100	100	100	100
2					100	100	100	100	100	100
A						100	100	100	100	100
K							100	97	100	100
J								100	100	100
Q									100	100
7										100

Hover or tap a cell. The block pins one card; the axes name the other two.

Plate II Real data — 11x11 v5, mão's opening lead, drawn with the lab's own cells. The brass label chooses the pinned card; the readout prints the pointed holding's full mix and each action's win %.

§ 2

The number, the bands, and ≈

Only one number fits in a cell, so a mixed cell prints its biggest slice — the most-played action's percentage. The color bands carry the whole mix, each sized by its probability; the readout here (in the lab: the tooltip) spells out every action with its exact share.

A cell wearing ≈ instead of a number is weak: where a per-node BR measurement ships, an adversarial best response gains more than 5 match-win points. Older exports use the legacy self-loss/reach alarm. Either way, read ≈ as a warning, not a tactic — the trust chapter shows the machinery.

hi \ lo	5♥	5♠	5♦	3	2	A	K	J	Q	7	6	4
5♣	50	100	100	100	100	100	100	100	100	100	100	100
5♥		50	100	100	100	100	100	100	100	100	100	100
5♠			50	100	100	100	100	100	100	100	100	100
5♦				100	100	100	100	100	100	100	100	100
3				100	65	100	100	100	100	100	100	89
2					100	71	100	100	100	100	100	89
A						100	68	100	100	100	100	86
K							100	67	100	100	100	85
J								100	64	100	100	86
Q									100	68	100	94
7										100	55	100
6											100	96
4												100

Hover or tap a cell. Solid cells carry trained mixes; the pale ≈ cells are flagged.

Plate II·b Real data — 11x11 v4, a corner the solve rarely visits: mão led the 4, pé took the round with a 3 and led round 2 face down. Mão's exact two-card grid has 0 of 87 cells flagged ≈ — low reach earned them almost no training.

§ 3

The list — same data, sorted

LIST lays the very same holdings out as rows, strongest first: the cards up front, the mix as a labeled bar. Nothing changes but the shape — the grid is for seeing regions at a glance, the list is for reading one hand at a time.

5♣5♥4

5♣5♠4

5♣5♦4

5♣34

5♣24

5♣A4

5♣K4

5♣J4

Plate II·c Real data — the first eight holdings of the same L = 4 block, exactly as the lab's LIST draws them; each bar segment is labeled with its action and share.

§ 4

Walking one hand through the decisions

Pin the hand as it was actually played in the left rail, then walk the decisions with ← →. A chart cell fills two of your three cards; the panel’s card list or a card’s own menu fills the rest, and cells that are impossible with your picks grey out.

Pinning the hand (⚑) fixes it for the whole hand: that player’s rail decisions then show the pinned cards’ own mix, and only those cards stay playable. Click a card to clear it, double-click for its menu.

Rail focus

Deal

Before a play, every hand is still possible. The chart describes that full starting distribution.

VII Click a point in the rail: focus moves there, while the already observed cards stay in the line.