Board texture
How coordinated the flop is — dry, wet, paired, monotone
Definition
Texture describes how many draws a board offers and how it connects with the ranges. A dry board (A♦7♠2♣ rainbow) offers almost no draws; a wet, coordinated board (J♠T♠8♦) opens up straights, flushes and two pairs; add paired boards (K77) and monotone boards (three cards of one suit), which follow their own logic. Texture directly drives betting strategy. On a dry board that favors the opener, the c-bet is frequent and small (25-33% pot): few opposing hands can continue, so there's no need to risk much. On a coordinated board that hits the defender's range, you c-bet less often and bigger, and you check a much larger share of your range. The second axis: static versus dynamic. On a static board (K72 rainbow), the hand hierarchy barely moves — top pair stays top pair. On a dynamic board (9♠8♠6♦), almost every turn can overturn the established order: you value-bet harder right away and stay careful with one-pair hands.
BTN versus BB. On A♦7♠2♣, c-bet 30% of the pot at very high frequency: the BTN's range dominates and almost no turn changes anything. On 9♠8♠6♦, the same BTN checks far more: this board smashes the BB's defending range — straights, two pairs, big draws — and every turn can reshuffle everything.