Game Preview: Chicago Stock Exchange, or Game Tree Tribulations

Game Preview: Chicago Stock Exchange, or Game Tree Tribulations
Board Game: Chicago Stock Exchange
At heart, perfect information games like chess and checkers are game tree exercises. The first player in chess makes one of twenty possible moves, the second player does the same (creating one of 400 possible board positions), then the first player takes another move (8,902 possible board positions), and so on. Computers can walk their way through multiple branches of these game trees, weighing the outcomes of this move or that, to determine the "optimum" move; humans, on the other hand, can't calculate all of the possibilities and instead rely on heuristics, instinct and general principles like controlling the center of the board. Some players love these types of games because they're direct mental competitions: Given everything laid out before them, which player can outthink the other? Other players view such games as boring exercises in piece moving.

I never cottoned to chess, but I've enjoyed plenty of perfect information strategy games over the years, Corné van Moorsel's Floriado in particular, playing more than four hundred times on Mastermoves.eu. In that game, set in a 8x5 field of flowers, you and your opponent take turns moving your token left, right or straight ahead to collect flower tiles in five colors, with you being able to collect a tile only if it has fewer flowers on it than any tile you've already collected of that color. Once both players can't make a legal move, you score points for each color via triangular scoring (1, 3, 6, 10... points for 1, 2, 3, 4... tiles) and the player with the most points wins. The game tree is dense enough that you can't imagine how everything will unfold, but it's not too overwhelming, allowing me to skip a few turns ahead and explore back-up plans before making my current move.

Pak Cormier's Chicago Stock Exchange, which debuted at Spiel 2013 from publisher 1-2-3-Games and distributor Blue Orange (EU), features another small-scale game tree, this time themed around a stock market that combines the buying and selling of stocks with hopscotch. Well, that's what it feels like anyway. Here's a complete description of the game:

Quote:
To start, shuffle the 36 tokens — which depict six types of goods — then place them in nine stacks, with the stacks in a circle. On a turn, the active player moves a pawn 1-3 stacks, then takes the top token from the two stacks adjacent to this pawn. He keeps one token for his own holdings and sells the other, lowering the value of that good by one. (Wheat starts with a value of 7, and the other goods start at 6.) When the last token in a stack is taken, the circle shrinks. When only two stacks remain, the game ends and players tally the value of their holdings to see who best judged (and manipulated) the market.
That's it! Simplicity itself, and since the tokens are double-sided, information about which tokens are in which stacks is open knowledge. Whether you decide to lay out the stacks in order to more clearly see what's where is up to you, but in my five games so far — one with two players and four with three — we've kept the tokens in piles, possibly to keep the players from looking too much like the dudes on the front cover: "So if I toss corn to take coffee that leaves her with a chance to then hit coffee while taking another sugar, but if I take the corn while three corns are visible now and in the second layer, their value is likely to be tanked quickly, so maybe I'll— Oh, geez, my heartburn..."

External image

Naturally the two-player game gives you the most control since your move determines exactly which six possible moves are available to the opponent, and that set-up leads to more pondering about moves because you can see those next few turns relatively clearly. With three players, the game turns into an interesting team-building exercise of sorts as you want to side with each other player to some degree (because they're not going to tank the value of the goods they're collecting) while not doing so too heavily because the third player out will always take the opportunity to hit that one good, if possible.

With three players, the number of tokens collected isn't necessarily even as the game ends immediately when only two stacks remain, but the player (or players) with fewer tokens can win just as well as the player with more. It all depends on what you're collecting, and if you've managed to leave only garbage available for your opponents, then that extra token is meaningless. (If you're concerned about fairness, you could play three rounds and have each player start once, but I haven't seen the need for such a change.)

Chicago Stock Exchange includes a variant for expert players in which you can move around the circle as far as you like, but you must stop if you hit a stack topped with a token matching the one from which the pawn started its move. I haven't tried this variant yet, but I'm only five plays in, and lots of room remains for getting a better feel of the game and acquiring an instinct for which branches of the game tree bear the best-looking fruit before I need to go looking for variants. After all, I stopped playing Floriado after more than four hundred plays not because I was tired of the game or felt it was played out, but because it was eating up too much work time! In practice, I've found that if you're interested in taking the time to explore a game, you can almost always find something new...

(Thanks to Blue Orange for providing a review copy of this game.)

Related

New Game Round-up: Machi Koro en Français, New and Improved Amsterdam & Hanabi for Every Market

New Game Round-up: Machi Koro en Français, New and Improved Amsterdam & Hanabi for Every Market

Dec 04, 2013

• Masao Suganuma's Machi Koro was the three-star, runaway winner of the Japon Brand line-up at Spiel 2013, with copies of the game in constant play during BGG.CON 2013, too. While we're still...

BGG.CON 2013: Impulse — Breaking Your Mind at the Speed of Light

BGG.CON 2013: Impulse — Breaking Your Mind at the Speed of Light

Dec 02, 2013

Q: "Why did the man drop his game at the convention?"A: "Poor Impulse control."Let's get this out of the way up front: I've written a lot about how much I love Carl Chudyk's Innovation. Here's...

New Game Round-up: The Nile Will Run Red While You Explore Valley of the Kings for Illegal Tiny Epic Kingdoms

New Game Round-up: The Nile Will Run Red While You Explore Valley of the Kings for Illegal Tiny Epic Kingdoms

Dec 01, 2013

• Designer John Clowdus of Small Box Games posted this update on Facebook on Nov. 25, 2013 about The Nile Will Run Red: Quote:Last game of the year/first game of 2014 will be a collection of...

BGG.CON 2013: Pandemic: The Cure — Gambling on the Job

BGG.CON 2013: Pandemic: The Cure — Gambling on the Job

Nov 27, 2013

To answer the first question people have had about Pandemic: The Cure — a dice-based version of the best-selling Pandemic board game — the packaging shown at right was created by designer...

Crowdfunding Round-up: Fighting Fears, Reinventing the Past, Building a Reputation & Ogling Templars

Crowdfunding Round-up: Fighting Fears, Reinventing the Past, Building a Reputation & Ogling Templars

Nov 26, 2013

You know what's out of control? Kickstarter projects for board and card games. Okay, that's not news to you, dear reader, as you've undoubtedly seen a continuous wave of announcements for such...

ads