Psellos
Contemporary Development With Functional Programming

The Schnapsen Log

June 24, 2019

Imperfect Information

Martin Tompa

The biggest challenge of this game is that, until the stock is exhausted, you are playing with only partial information about your opponent’s hand. The fewer tricks that have been played, the more imperfect your information.

Concealed cards:
AKQ
TQ
♣ KQ
ATJ

Your cards:

AK
♣ AT
Q

Trump: J
Stock: 5 face-down cards
Game points: Tibor 5, You 5
Trick points: Tibor 18, You 0
On lead: Tibor

With his opponent still trickless, Tibor closes the stock, declares the club marriage to bring his trick point total to 38, and leads ♣Q. This is a scary situation: the deal is now worth 3 game points and, because there are so many cards concealed in the stock, there are very many possible hands Tibor might be holding. What is your plan? When you have come up with a good one, you are welcome to read my analysis.

© 2019 Martin Tompa. All rights reserved.


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About the Author

Martin Tompa

Martin Tompa (tompa@psellos.com)

I am a Professor of Computer Science & Engineering at the University of Washington, where I teach discrete mathematics, probability and statistics, design and analysis of algorithms, and other related courses. I have always loved playing games. Games are great tools for learning to think logically and are a wonderful component of happy family or social life.

Read about Winning Schnapsen, the very first and definitive book on the winning strategy for this fascinating game.

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June
Imperfect Information, Jun 24
December
Singleton Tens, Dec 1
November
Complete Information, Nov 28
September
Gamble, Sep 30
April
Homework on Expected Values, Apr 26
March
Thoughtful Actions, Mar 25

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