Rules, Setup, and Strategy Guide

Quick Answer: Monte Carlo Solitaire deals 25 cards in a 5×5 grid. Remove adjacent pairs of same-rank cards (touching horizontally, vertically, or diagonally). After removing pairs, consolidate remaining cards to fill gaps from left to right, then deal new cards from the stock to complete the grid. Win by removing all 52 cards. Win rate is approximately 10–20%.

Monte Carlo Solitaire is a deceptively tricky grid-based patience game where the challenge lies not just in finding pairs but in managing the consolidation mechanic. After pairs are removed, remaining cards slide into a compact formation, and new cards fill the gaps — changing adjacencies and creating new opportunities with every cycle. The constant reshuffling of the board gives Monte Carlo a distinctive rhythm that sets it apart from other pairing games.

What Is Monte Carlo Solitaire?

Monte Carlo is a single-deck patience game where you remove pairs of same-rank cards that are adjacent to each other in a grid. Unlike games like Pyramid or Elevens Solitaire where you sum to a target number, Monte Carlo cares only about identical ranks — two 7s next to each other can be removed, two Queens next to each other can be removed, etc.

Definition: "Adjacency" in Monte Carlo Solitaire means two cards are touching. Cards can be adjacent horizontally (left/right), vertically (up/down), or diagonally (corner-touching). Two same-rank cards in any of these eight possible adjacent positions form a removable pair.

The game's name references Monte Carlo, Monaco, home of famous casino gambling — perhaps reflecting the game's significant luck element. Monte Carlo is catalogued on [Monte Carlo Solitaire Rules](https://en.wikipedia.org/wiki/Patience_(game) and appears in classic patience books under this and related names.

Monte Carlo Solitaire Setup

Cards needed: One standard 52-card deck, shuffled.

Layout:

1. Deal 25 cards face-up in a 5×5 grid (5 rows of 5 cards each)
2. The remaining 27 cards form the face-down stock

The grid: Each card occupies one of the 25 grid positions, labeled by row (1–5 top to bottom) and column (1–5 left to right). Position (1,1) is the top-left card; (5,5) is the bottom-right.

How to Play Monte Carlo Solitaire

Objective: Remove all 52 cards by finding and removing adjacent same-rank pairs.

Round structure: Each round of play consists of three phases:

Phase 1 — Remove pairs: Find any two cards in the 5×5 grid that share the same rank and are adjacent (horizontally, vertically, or diagonally). Remove them both from the grid, leaving empty spaces. You may remove multiple pairs in a single phase — continue removing all available pairs before moving to Phase 2.

Phase 2 — Consolidate: After removing pairs, the remaining cards are consolidated: starting from the top-left position, move each remaining card (maintaining their relative order, left to right, top to bottom) into the leftmost available spaces in the grid. Cards retain their left-to-right, top-to-bottom reading order but fill empty spaces from the top-left.

Example: If the grid originally had cards at positions A, B, C with an empty space at D, after consolidation the order becomes A, B, C filling positions 1, 2, 3 from the top-left.

Phase 3 — Deal new cards: After consolidation, empty positions in the grid (positions not filled by consolidated cards) are filled with new cards from the stock, dealt one per empty space from left to right, top to bottom.

After Phase 3, return to Phase 1 with the newly filled grid.

Winning: All 52 cards are removed as pairs (26 pairs total).

Losing: A round ends with pairs having been found and removed, but during Phase 2/3 no new adjacent pairs exist after consolidation and the stock is exhausted.

Monte Carlo Strategy

Make multiple removals per phase. The consolidation phase reshuffles adjacencies, meaning each removal can affect which pairs become available to remove next. Removing pairs in the right order within a single phase matters.

Prefer removing non-adjacent pairs first. If you have two choices for removing a pair of 5s — one where both 5s are also adjacent to other pairs, and one where they are isolated — removing the isolated pair first might be better. This preserves the other 5s' adjacency to their respective pair opportunities.

Think about consolidation effects. When you remove pairs, you create gaps that consolidation will fill in a specific way. Think about what the grid will look like after consolidation — cards above gaps will "fall" left and fill those spaces, potentially creating new adjacencies.

Prioritize hard-to-pair ranks. Some ranks are harder to pair than others. With only four cards per rank (two possible pairs), getting both pairs removed requires careful tracking. If two 3s appear adjacent early, remove them — this removes that rank's pairing burden from the game.

Try to keep same-rank cards adjacent. As you choose which pairs to remove in Phase 1, also consider which remaining same-rank cards are near each other. Preserving adjacencies for pairs you cannot yet remove (perhaps only one of the pair is on the board currently) can set up future removals.

The consolidation is automatic, not strategic. Unlike some games where you choose where to move cards, Monte Carlo's consolidation phase is mandatory and follows a fixed left-to-right, top-to-bottom order. Your only decisions are which pairs to remove and in what order.

For more pairing game strategy, see our Pyramid Solitaire guide and our Elevens Solitaire rules which discuss pair selection strategy in related contexts.

Win Rate and Difficulty

Monte Carlo Solitaire has a win rate of approximately 10–20% for attentive players. The game is genuinely challenging despite its simple rules. The primary difficulty is the limited control you have over the board state — consolidation and new card deals introduce significant randomness into each round.

The game's luck component is higher than strategic games like FreeCell or Klondike, but lower than pure luck games like Clock Solitaire. Monte Carlo sits in the "mostly luck, some skill" category — your ordering of removals and attention to consolidation effects can improve your win rate, but the underlying shuffles heavily determine outcome.

For comparison with other pairing-removal games and difficulty levels, see our hardest solitaire games ranked guide.

Players in puzzle-enthusiast communities across the United States — including in cities like Denver and Phoenix where casual card game culture is strong — often enjoy Monte Carlo for its visual grid interface and satisfying pair-removal mechanic.

Monte Carlo Variations

Weddings (Royale and Général): A closely related game where the consolidation mechanic differs slightly. Cards consolidate differently, creating a different rhythm.

Double Monte Carlo: Uses two decks with a larger grid, dramatically extending play time and complexity.

Monte Carlo with diagonal restriction: Some versions only allow horizontal and vertical adjacency (no diagonal), significantly reducing pair opportunities and increasing difficulty.

Monte Carlo with redeals: A house rule allowing one or two reshuffles of the stock to give extra chances. This substantially increases win rate.

For a broader survey of grid-based patience games, explore our complete guide to different types of solitaire games and discover the variety of approaches to single-player card gaming.

Frequently Asked Questions

How do you remove pairs in Monte Carlo solitaire?

Remove two cards of the same rank that are adjacent in the 5×5 grid. Adjacent means they are touching in any of eight directions: left, right, up, down, or any diagonal. Both cards must have identical ranks (two 7s, two Queens, two Aces, etc.). Suit does not matter — any two cards of the same rank in adjacent positions can be removed as a pair.

What happens after removing pairs in Monte Carlo?

After removing all available pairs from the grid, the remaining cards are consolidated — moved to fill empty spaces starting from the top-left position, maintaining their original left-to-right, top-to-bottom reading order. Then new cards from the stock are dealt into any remaining empty positions to refill the 5×5 grid. Play then resumes with the refreshed grid.

What is the win rate for Monte Carlo solitaire?

Monte Carlo Solitaire has an estimated win rate of approximately 10–20% for attentive players. The game has a significant luck component due to the random stock and the consolidation mechanics that create unpredictable new adjacencies. Thoughtful pair-removal ordering can improve your odds, but the shuffle heavily influences outcomes.

How many cards are in the starting grid for Monte Carlo?

The starting grid contains 25 cards in a 5×5 arrangement. The remaining 27 cards form the face-down stock, which is used to refill empty grid positions after pairs are removed and the remaining cards are consolidated.

Is Monte Carlo solitaire the same as other pairing games like Pyramid?

Both Monte Carlo and Pyramid are pairing-based solitaire games, but they work very differently. Pyramid pairs cards that sum to 13 with a triangular blocking layout, while Monte Carlo pairs same-rank cards in a 5×5 grid without a summation target. Monte Carlo's consolidation and refilling mechanic has no equivalent in Pyramid. Monte Carlo also has a higher win rate than Pyramid (10–20% vs 1–5%).

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💡 Variant Strategy Note (2026)

Each solitaire variation demands unique table space management. In column-heavy formats like Spider or Yukon, prioritize unlocking hidden columns early to act as temporary staging areas.