Shuffling…
Two suits doubles the bookkeeping: cards still stack by rank, but only a same-suit run travels as a group, so a column can look tidy and move nowhere.
ObjectiveEight King-to-Ace runs again, but built from two suits — so only same-suit sequences move as a group.
Two-suit Spider deals the same ten columns and hundred and four cards, but now half the deck is Spades and half is Hearts. One rule gains teeth: you may still place any card on any card one rank higher, but only a same-suit sequence can be picked up and moved as a group. A red Ten parked on a black Jack is legal — and stuck. Moving that pair again requires somewhere to put each card separately.
That is the entire difference, and it changes how you build. In one suit, stacking is always progress. In two suits, every off-suit placement is a loan you repay with tempo later, and the players who win are the ones who borrow deliberately rather than by habit.

A same-suit placement keeps the pair mobile forever; an off-suit one freezes both cards until you find two separate homes. Neatness that costs mobility is a bad trade at every stage of the game.
An off-suit Queen on a King ruins one slot for the rest of the game. An off-suit Three on a Four costs almost nothing, because the bottom of a run was never travelling anywhere anyway. Push your compromises toward the low cards.
The temptation is to use your empty column for whatever the stock dumps. Its real value is as the space where you split off-suit pairs apart — spend it on repaying debts, not on storage.
Each deal adds ten cards on top of everything. Any suit-sorting you postpone gets buried, and unburying it costs the moves you were saving. Do the boring consolidation while the board is still shallow.
Deals here carry the same construction guarantee as every other Spider table on the site: built backwards from a finished game, so a winning line provably exists. Nothing about the middle difficulty makes the promise weaker.
If the off-suit penalty is still catching you out, one suit drills the deal timing without it. When two suits stops feeling like a wall, four suits is the summit.