Sample
75,000 Deals
25,000 seeded opening deals for each difficulty mode.
Original Data Study
Spider Solitaire Opening Moves Study
We analyzed 75,000 seeded opening deals to compare 1-suit, 2-suit, and 4-suit Spider Solitaire. The result: the number of legal opening moves barely changes, but same-suit mobility changes everything.
Direct Answer
Why 4-Suit Feels Harder
In our June 2026 simulation of 25,000 seeded deals per difficulty, 4-suit Spider Solitaire had about the same number of legal opening top-card moves as 1-suit, but only 82.34% of 4-suit starts had at least one same-suit opening move, compared with 99.34% in 1-suit. The hard part is not finding any move. It is finding a move that keeps the board mobile later.
Finding
Same-Suit Friction
Legal rank moves stay similar, but same-suit moves drop sharply in 4-suit.
Player Move
Preserve Mobility
Prefer same-suit moves when they reveal cards or keep columns flexible.
Findings
Opening Move Data by Difficulty
| Difficulty | Avg legal top moves | Avg same-suit top moves | Zero-move starts | Starts with same-suit move | Avg visible suits |
|---|---|---|---|---|---|
| 1 Suit | 6.46 | 6.46 | 0.66% | 99.34% | 1.00 |
| 2 Suits | 6.43 | 3.20 | 0.57% | 96.12% | 2.00 |
| 4 Suits | 6.46 | 1.61 | 0.61% | 82.34% | 3.81 |
Method
How We Tested the Opening Deals
We used the same deck model as the live game: 104 cards, 10 tableau columns, 54 tableau cards, and 50 stock cards. The first four columns receive six cards each; the remaining six columns receive five cards each.
Each difficulty was simulated with 25,000 deterministic seeds. For every opening board, we counted legal top-card moves by rank, same-suit top-card moves, zero-move starts, visible rank variety, visible suit variety, and first-stock-row potential moves.
This is not a full solver and does not claim that a deal is winnable or unwinnable. It measures the opening-board friction a human player sees before making the first move.
What It Means
The Best Opening Move Is Not Always the First Legal Move
In 1-suit
Every legal descending move is also same-suit, so the opening board rewards movement and card reveals. This is why 1-suit is the best practice mode for learning the rules.
In 4-suit
A legal descending move can create a mixed-suit stack that cannot move as a group later. The board may show plenty of moves, but fewer of them preserve future flexibility.
Practice the Finding
Play 4-Suit and Watch for Same-Suit Mobility
On your first moves, count how many legal options also keep the suit together. That small difference is what turns a playable-looking board into a hard 4-suit game.
Difficulty: 4 Suits
Score: 500Moves: 0Time: 0:00
Started
0
Wins
0
Streak
0
Best 4 Suits
New run
2
♠
2
♠
♠
4
♠
4
♠
♠
K
♦
K
♦
♦
9
♣
9
♣
♣
6
♠
6
♠
♠
2
♥
2
♥
♥
2
♣
2
♣
♣
Q
♣
Q
♣
♣
9
♥
9
♥
♥
2
♥
2
♥
♥
50
Drag cards to move. Build descending sequences of the same suit. Complete all 8 suits (K to A) to win.
Double-click to auto-move a card. Click the stock to deal 10 cards (no empty columns allowed).
4-Suit Strategy
Learn how to keep same-suit sequences mobile in hard mode.
Empty Columns
Use open spaces to repair mixed-suit friction and expose hidden cards.
When to Deal
Do not add 10 stock cards until you have used the board's useful options.
FAQ
Why is 4-suit Spider Solitaire harder if the opening move count is similar?
In our 75,000-deal simulation, 4-suit starts had nearly the same number of rank-legal top-card moves as 1-suit starts, but far fewer same-suit moves. The difficulty comes from suit friction, not from having fewer visible moves.
What did this Spider Solitaire study measure?
The study measured opening-board metrics across 25,000 seeded deals per difficulty: legal top-card moves, same-suit top-card moves, zero-move starts, visible rank variety, visible suit variety, and first-stock-row potential moves.
Does this prove which deals are winnable?
No. This study measures opening-board mobility, not full-game solvability. It is useful for understanding why some starts feel flexible while others create long-term suit-management problems.
What is the main practical takeaway?
Do not treat every legal move as equal. In 2-suit and 4-suit Spider Solitaire, same-suit moves preserve future mobility, while mixed-suit moves can look legal but make the board harder to untangle.