The game has changed! GM Matthew Sadler on how Game Changer can benefit YOU


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As you may already know, tomorrow we are releasing perhaps our most exciting course yet: the highly-anticipated Game Changer on Chessable.

The book in print for is already out – but this will be different: it will be the only trainable version of Game Changer and it will be with MoveTrainer™.


But we thought beforehand we could get hold of co-author GM Matthew Sadler to have a quick chat about the book, what he knows about Chessable and how Game Changer could help you become a better player.

Game Changer on Chessable, by GM Matthew Sadler and Natasha Regan
Game Changer on Chessable, by GM Matthew Sadler and Natasha Regan

Matthew, a two-time British champion and individual Olympiad gold medal winner, has been at the Tata Steel Chess Tournament won by Magnus Carlsen in Wijk aan Zee, the Netherlands.

He has written Game Changer with Natasha Regan, a Women’s International Master from England, who after her degree in mathematics from the University of Cambridge has had a successful career in chess.

I met Natasha for the first time at the extremely glitzy gala ball for the World Chess Championship last November. However, despite being a fellow Brit and based in England I’ve never before run into Matthew.

Here’s what he had to say:

GM Sadler on Chessable:

“It’s exciting to see a new format for Game Changer coming out!

“However, I’m afraid I don’t know that much about Chessable. I did see a couple of videos by Nick Murphy and Lorin a little while back and I thought that was a really nice idea – it worked very well – but that is the extent of my knowledge about Chessable.

“That may well change ;-)”

GM Sadler on the value of Game Changer for club players:

“Our goal with Game Changer was to bring both the AI side (how AlphaZero is built, how it thinks – which really helps you understand the moves AlphaZero plays and also the moves that other engines play) and the chess side to as broad an audience as possible.

“The lovely thing for the chess was that because AlphaZero has such a clear and distinctive style, we could organise the book thematically.

“Each chapter – e.g. march of the rook’s pawn, colour complexes – is like a tool in an AlphaZero toolkit that you can pick up and then use in your own games.

“The great thing as well is that the games are so beautiful: you can also just sit back and relax and read it as a wonderful collection of thrilling attacking games!”

A great example:

AlphaZero vs. Stockfish 8

A crucial moment. Stockfish takes the risky decision to open the queenside, eyeing a concrete continuation against White’s most obvious reply. We examined the 0.00 evaluation and the effect on Stockfish’s play in this position in the chapter ‘ZeroZeroZero’. For now, back to the game: Stockfish thinks it has spotted something clever!

“I think that the games “Rooks on the rampage” and “The matrix” in the colour complexes chapter (10) are pretty mind-blowing!

“Especially the matrix is an amazing demonstration of the way AlphaZero combines an open file with an open diagonal against the opponent’s king as the basis of an attack, even at the cost of many many pawns!

“The concept 56.Ka2, 57.Rb1 and 58.c3 is absolutely amazing when you consider that White had already sacrificed 2 pawns before then!”

Check out Game Changer: AlphaZero’s Groundbreaking Chess Strategies and the Promise of AI on Chessable today!

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