Nostalgic 24-Point Battle

Nostalgic 24-Point Poker Speed Calculation Battle is a captivating and educational puzzle game that aims to train your mathematical thinking and challenge your brain. By using addition, subtraction, multiplication, and division operations, quickly calculate the given four numbers to obtain a result of 24. Engage in real-time battles with other players to showcase your mental arithmetic abilities. The game offers multiple difficulty levels and modes for you to enjoy leisurely entertainment while exercising your mind. Solve new puzzles every day! A built-in 24-point calculator is available when you encounter unsolvable card combinations.

Simple yet challenging, become the king of mental math in this speed calculation 24-point game! Boost your brainpower while having fun!

Key Features:

Beginner Mode: Each round offers random card combinations.
Intermediate Mode: Eliminates rounds with purely addition or subtraction operations.
Advanced Mode: Every round guarantees at least one fractional solution.
Crown Mode: Handpicked high-quality puzzles for advanced players.
Two-player Mode: Compete against friends on the same device.
Attack Mode: Push your calculation skills to the limit within a time limit.
24-point Calculator: Get answers when you're stuck with a deck of cards.
Exciting achievement system awaits your challenge!
Game Rules:
The 24-point poker speed calculation game is based on a classic card game I played during my childhood. Using a standard deck of cards with the jacks (J), queens (Q), and kings (K) representing 11, 12, and 13 respectively, remove two jokers. Flip four cards at a time and use each card only once to perform addition, subtraction, multiplication, and division operations to obtain a result of 24. For example, if you draw cards with values of 3, 8, 8, and 9, the would be (9 - 8) (8 × 3) = 24. The game supports fractional calculations as well.

Game:
The popularization of the 24-point poker speed calculation game is attributed to Mr. Sun Shijie from the Chinese community. He conceived the idea in1986 and officially introduced it in the United States in 1988 where it quickly gained popularity nationwide. However, as early as January 1979, Mr. Zhijia and Mr. Xu Fangqu compiled an article titled "Who Can Calculate Faster" in "Interesting Mathematics," published by Children's Publishing House. This article discussed similar games involving calculations for reaching a total of twenty-four points.

【Nostalgic Tips for Mastering the Game】
The game has certain techniques for solving puzzles since the final result must be exactly twenty-four using only integers as initial numbers:
Common techniques include:
3*8=24，4*6=24，2*12=24，24*1=24。

Less frequently used techniques include:
25-1=24，23+1=24，22+2=24，15+9=24，28-4=24，36-12=24。

Mastering these basic techniques will allow you to solve more than half of the puzzles! For more challenging calculations involving fractions:
(5,5,5,1)=>(5-1/5)*5=24
(1,3,4,6)=>6/(1-3/4)=24
(10,10,4,4) =>(10*10-4)/4
(7,7,3,3) =>(3+3/7)*3
(1,5,7,10)=>(1+7/5)*10
(1,5,7,10)=>(1+7/5)*10
(13,10,10,5)=>(13*10-10)/5

These require advanced skills in solving fractional solutions!

This game is really a great way to kill time while waiting for a train or on the subway. It is also a great way to play with your children and educate them while having fun.
Hurry up and reminisce childhood classics with your family and friends and train your strongest brain!

Recent changes:
Updated android sdk version 36