Photo Concentration lock & key, also known as mixed doubles
Photo Concentration lock & key, also known as mixed doubles Give someone beautiful holiday memories with these creative asymmetric matching pairs Mixed doubles photo concentration game by LUUDOO A birthday gift idea: Mixed matching pairs We offer a fantastic choice of designs to make sure your custom match up game is fit for purpose Benefit from LUUDOO's huge range of templates to macht your game to the gift occasion Stretch your mind with our custom mixed matching pairs Get those birthdays right with our custom matching pairs lock & key, aka friends and their birth dates Our custom matching pairs set are produced to the highest quality standards and befit important occasions such as birthdays, weddings, or anniversaries Mixed photo matching pairs are a creative surprise Let the birthday girl stretch apply her brains to a game of Concentration Luudoo produces high quality gift boxes with a personal touch Design a mixed doubles, your own, unique photo game Present someone with a set of most enjoyable puzzles, as they ponder over uneven pairs of holiday memories Commit your beautiful holiday pictures to a unique set of mixed matching pairs Our mixed matching doubles are a popular gift for wedding couples that like pondering a good puzzlezeitsgeschenke für Paare die gerne grübeln Present your wedding gift in a luxurious, uniquely customised box Our default gift box is a great and economic option Customised match game with cards connected by clues by LUUDOO as designed by our customers Great example of a birthday gift printed for one of LUUDOO's users Make a creative game using LUUDOO's customised concentration games "mixed doubles"  An example of how our customers create customised games

Matching Pairs: lock & key

Create a unique photo riddle!

Price: from

Christmas deadlines

Standard delivery:

Countries neighbouring Germany: 17/12, 21:00

Rest of Europe: 12/12, 21:00

Express delivery:

All countries: 18/12, 21:00

(Standard delivery times pre-deadline)

Make it your own:

Choose from:

  • 32 (16 pairs) customised cards in standard box
  • 64 (32 pairs) customised cards (+€10.00)
  • In customised metal box (+€4.00)

Matching pairs (Concentration) lock & key – bending minds!

The principle: How to play this game?

Concentration with asymmetric pairs, aka mixed doubles has you look for, and try to memorise pairs that are not quite identical.

The aim of the game is to find and bag as many pairs as possible, whatever relationship links the two partners of a pair. You may have to identify a picture of Albert Einstein with his famous formula "E=mc2", for example; Romeo & Juliet could be a pair, or Shakespeare, and Romeo & Juliet might be a pair. At the start, all cardboard tiles are shuffled and placed face down on the table, either randomly, or in a tidily ordered rectangle. The starting player picks two tiles and reveals them for all to see. If they match, she keeps them, and takes another turn. If not, she turns the tiles face down again and it's the next player's turn. The games ends when the last remaining pair is collected.

Game rules for lock & key concentration games

Game character: The right mix of luck, strategy, and fun?

Luck: +++++ Strategy: +++++ Fun: +++++

As with the classic Concentration, the rules of the lock & key variant are very simple and you won't lose time before jumping right into the game. Games don't take long and you can further cut the game duration by using a smaller number of pairs. The mixed doubles variant of matching pairs expands the classic game through the relationship component that links the pairs together, which can add a whole new dimension to the game. Mates & their childhood sweethearts tends to create more laughs than the more cerebral crystals & their chemical formulas. We urge you not to discount variants like the latter. Training your memory and learning useful stuff is not a bad side effect of sitting down for a quick, fun game. 

Your unique lock & key concentration game: How to make it your own

Matching pairs lock & key is the ideal gift for those who like to stretch their minds a little and might just yawn at the classic variant of concentration. Suitable occasions match those of the classic variant, though. For birthday gifts, a popular relationship is built by matching photos with the dates when they were taken. Another classic is past addresses, with the house on one tile, and just a street number on the other; similarly, photos of the first own car are matched with a photo of its licence plate.

Weddings gifts complement two halves of pictures from the couple's past - one half with the bride, and the other with the groom - bring them together! Some time-match pictures of the couple with, say, the house they lived in at the time the shot was taken. Then there are those concentration sets that celebrate the wedding itself, matching fathers of the bride and groom, best maid and man, and - you decide. There are before and after pairs: Of the buffet, the bride, the uncle suited up (before), and with the tie around the forehead (after). 

Photos and matching dates are of course a classic for any occasion, just like photos of the same person or object, one in summer and the complementary one in winter, for instance, or shot from different angles. You may match the total view with a zoomed detail, a technique that's popular for holiday mixed doubles, too. 

Inspired by what our customers create, we are tempted to write so much more. But exactly because of our customers' awesome creativity, there seems to be no need - over to you! Oh, hold on, our inner teacher interrupts: Mixed matching pairs are a powerful learning tool, too, as you match English words with their counterparts in another language.

LUUDOO produces high quality customised games for every occasion

Made in Germany - We deliver the highest quality materials and production techniques from German craft businesses. Customised games by Luudoo are original, well-made, and durable. They reflect your creativity and individuality - a truly unique gift!

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