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How to Play Monte Carlo Solitaire

Monte Carlo Solitaire (also called Weddings or Double and Quits) is a pair-matching patience game where you remove adjacent same-rank cards from a 5×5 grid. With a win rate around 5-10%, it demands both sharp observation and strategic thinking about consolidation timing.

Setup

  1. Use a standard 52-card deck.
  2. Deal 25 cards face-up into a 5×5 grid (5 rows, 5 columns).
  3. The remaining 27 cards form the stock (draw pile).
  4. All cards in the grid are visible — there are no face-down cards.
  5. Suit doesn't matter for matching — only rank.

Objective

Remove all 52 cards from the game by matching and removing adjacent pairs of the same rank. The grid must be completely empty and the stock must be exhausted to win. If no adjacent pairs remain and the stock is empty (or consolidation cannot create new pairs), the game is lost.

Understanding Adjacency

Two cards are adjacent if they are next to each other in any of eight directions: left, right, up, down, or any diagonal. Cards that are separated by a gap (empty space) are not adjacent.

Adjacency Example

For a card at position (row 2, col 2), the adjacent positions are:

(1,1) (1,2) (1,3)

(2,1) [X] (2,3)

(3,1) (3,2) (3,3)

Corner cards have 3 neighbors, edge cards have 5, and interior cards have 8.

Rules

Removing Pairs

Click two adjacent cards of the same rank to remove them from the grid. Suit does not matter — any two adjacent 7s, Queens, Aces, etc. can be removed. Both cards are permanently discarded.

Consolidation

When no more adjacent pairs exist, click “Consolidate & Deal.” Remaining cards shift left and up (maintaining their order when read left-to-right, top-to-bottom), closing all gaps. Then new cards from the stock fill any remaining empty spaces in the grid.

Continuing Play

After consolidation, scan for new adjacent pairs created by the reshuffled positions and newly dealt cards. Remove pairs, consolidate again when stuck, and repeat until the game is won or lost.

Winning

You win when all 52 cards have been removed from the game. The grid must be completely empty and the stock exhausted.

Losing

The game is lost when no adjacent same-rank pairs remain on the grid and consolidation cannot create any new pairs (either the stock is empty, or the remaining cards have no matching ranks that could become adjacent).

Strategy Tips

1. Scan the Entire Grid First

Before removing any pair, scan all 25 positions for every available pair. You may have multiple options, and choosing wisely matters. Don't just grab the first pair you see — look for the one that creates the best follow-up opportunities.

2. Prioritize Edge and Corner Pairs

Cards at the edges and corners have fewer adjacent positions. After consolidation, they're less likely to end up next to their matching rank. Remove these less-connected pairs first, saving interior pairs (which have more adjacency options) for later.

3. Think About Post-Consolidation Layout

When choosing which pair to remove, visualize how the grid will look after consolidation. Removing certain pairs may bring other same-rank cards into adjacent positions. This forward-thinking separates skilled players from casual ones.

4. Track Remaining Ranks

Each rank has four cards. If you've already removed two of a rank, the remaining two must eventually become adjacent. Keep a mental note of which ranks still need matching — it helps you evaluate consolidation outcomes.

5. Don't Over-Consolidate

Remove every possible pair before consolidating. Each removal changes the grid layout, potentially revealing new adjacent pairs. Consolidating too early wastes stock cards and reduces your options later.

6. Use the Undo Button Freely

If a pair removal doesn't lead to good follow-up options, undo it and try a different pair. Experimentation is key to finding the optimal removal order in each position.

Comparison: Monte Carlo vs Related Games

FeatureMonte CarloPyramidGaps (Montana)
Matching ruleSame rankSum to 13Sequential same-suit
Layout5×5 grid7-row pyramid4×13 grid
Adjacency matters?Yes (8 directions)Exposed cards onlyGaps must be adjacent
Suit matters?NoNoYes
Win rate~5-10%~3-5%~10-15%

Monte Carlo Variants

Thirteens (Monte Carlo 13)

Instead of matching same-rank pairs, cards that sum to 13 are removed (like Pyramid Solitaire rules applied to a grid layout). Kings are removed singly since they already equal 13.

Monte Carlo 6×6

A larger variant using a 6×6 grid (36 cards dealt initially, 16 in stock). The bigger grid creates more adjacency opportunities but requires managing more pairs simultaneously.

No-Consolidation Monte Carlo

A harder variant where cards don't consolidate — gaps remain permanently. New cards from the stock fill gaps in place. This version is significantly more difficult because cards never shift into new adjacencies.

Frequently Asked Questions

What makes Monte Carlo Solitaire different from other pair-matching games?

Unlike Pyramid Solitaire where pairs must sum to 13, Monte Carlo requires pairs of the same rank. The adjacency requirement (horizontal, vertical, or diagonal) adds a spatial puzzle element. The consolidation mechanic — where cards shift together and new cards fill gaps — creates a unique dynamic where the board constantly changes shape.

How does consolidation work in Monte Carlo Solitaire?

When you consolidate, all remaining cards in the grid shift left and up to fill gaps, maintaining their relative order (read left-to-right, top-to-bottom). Then new cards from the stock are dealt into any remaining empty spaces. This can create new adjacent pairs that weren't possible before.

When should I consolidate in Monte Carlo?

You should consolidate when no more adjacent same-rank pairs exist on the current grid. However, some players choose to consolidate strategically even when pairs remain — if removing certain pairs first would create better adjacencies after consolidation. Generally, remove all available pairs before consolidating.

Can I move cards around the grid?

No. In Monte Carlo Solitaire, you cannot move individual cards. Cards only move during consolidation (automatically shifting left and up). Your only action is to remove adjacent same-rank pairs. This constraint is what makes strategic pair selection so important.

What is the best strategy for Monte Carlo Solitaire?

The best strategies include: prioritize pairs near edges (fewer adjacency options after consolidation), remove pairs that bring other same-rank cards closer together, track which ranks still need matching, and think about how the grid will look after consolidation before removing pairs. Planning ahead is the key differentiator between lucky and skilled play.

What is the win rate for Monte Carlo Solitaire?

Monte Carlo Solitaire has an estimated win rate of about 5-10% with skilled play. The game is heavily influenced by the initial deal and stock order. Many deals are unwinnable regardless of play quality, but careful strategy dramatically improves your chances compared to random pair removal.

History of Monte Carlo Solitaire

Monte Carlo Solitaire dates back to the late 19th century and appears in many classic card game collections. The name likely references the famous Monte Carlo Casino, evoking the game's element of chance. The game has been known by several names throughout history, including Weddings (referencing the “pairing” mechanic) and Double and Quits.

The game gained popularity in digital form through various Windows solitaire collections in the 1990s and 2000s. Its simple rules but challenging strategy make it an accessible yet engaging variant that continues to attract players who enjoy spatial reasoning puzzles.

Monte Carlo belongs to the family of pair-matching solitaire games alongside Pyramid, Golf, and Gaps. What sets it apart is the adjacency requirement combined with the consolidation mechanic — the board is constantly shifting, creating a dynamic puzzle that changes shape with every move.

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