How to become a problem-solving leader?

July 28, 2019

(Gerald M. Weinberg at the BizConf in August 21, 2009, by Carl-Johan Kihlbom)

“Problem-solving leaders have one thing in common: a faith that there’s always a better way.”

Gerald Weinberg, American computer scientist (1933-2018)

All quotes in the Dictionnary of quotes.

Access all monthly problems.


A Belgian daisy middlegame: Aba-Pro level 10 (Black) vs. Human (White).

I can hardly imagine that Aba-Pro level 10 really played this last move oÔ



Problem of the month: July 2019

A previously unreleased endgame problem.



5-4. Your turn. You play White and you win in 4 moves.
Both sides play in an energy efficiency mode, trying to move as few marbles as possible for the same result.
There may be several solutions.


Access all monthly problems.

Alea iacta est: the die is cast… in the garbage!

June 30, 2019

(Lisa Rougetet in january 2018)

The intervention of chance in a game is, in a way, a mechanism that takes the decisions out of the player’s hand. As combinatorial games are determinated, that is, without chance, there is a finite set of possible solutions, and therefore there is always a succession of moves which leads to victory (or to a draw). We can therefore build a winning strategy, which leaves full control to the player over the game, even if he has to anticipate the opponent’s moves.

(Interview by the Henri Poincaré Institute;
translated by FightClub & Maath)

Lisa Rougetet, French historian of mathematics (19??-)


All quotes in the Dictionnary of quotes.

Abalone Game Situation 4

A previously unreleased game situation.



The score is 4-5. Black to play. White just played c4d5 and Black played f3g4 before. Who will win this crazy endgame?

Keep in mind that in a real game, players may not find the best solution (^_-)—☆


You may be interested in other Abalone game situations.

Keep calm and use logic!

October 28, 2018

John van der Wiel, Tilburg chess tournament, round 1, Netherlands, October 12, 1983

“When you absolutely don’t know what to do anymore, it is time to panic.”

John van der Wiel, Dutch chess grandmaster (1959-)


All quotes in the Dictionnary of quotes.


Another Abalone complicated position.

Don’t panic!

In this case, all you have to do is:



An Abalone game review, by Slouching towards Thatcham (reblog)

Read the complete post on Abalone game review — Slouching towards Thatcham


Abstract (themeless) strategy games such as chess, draughts, Go and Reversi/Othello are among the most popular and enduring that people play. How does Abalone stack up against these? I was provided with a copy of this game for review purposes. The first thing you notice when you open Abalone’s eye-catching hexagonal box is how simple […]

I was provided with a copy of this game for review purposes.

The first thing you notice when you open Abalone’s eye-catching hexagonal box is how simple its contents are. Two pleasingly solid sets of 14 marbles – one black, one white – and a black hexagonal board. That’s it.

There are no convoluted rules to learn: it’s more like draughts than chess in this respect. The instruction booklet, such as it is, is just four pages long. From opening up the packaging, you can be all clued up and playing for the first time within five minutes.

The board itself initially seems light and plasticky but is actually strong and durable and stands up to repeated play. It comprises 61 holes that can hold individual marbles. A six-sided ‘moat’ runs around the outside, ready to catch any marbles that are pushed over the edge.

And that’s the aim of Abalone… [Read more on Abalone game review — Slouching towards Thatcham]