BOTW: 2017.10.21

The diagram is a puzzle created by Martin Thoresen to celebrate the 10th TCEC: with pieces in the shape of a 10, it is mate in 10. 

The key move, with some of the many variations, is shown below.

Schachbundesliga
Oct 21-22, 2017

Rounds 1 and 2 of the German Chess League are on this weekend. Top players include: MVL, Anand, Svidler, Adams, Bacrot, Kasimdzhanov... and that's just perennial champions Baden-Baden!

http://www.schachbundesliga.de/liveportal  

 Chess.Com Speed Chess Championship
Oct 23 & 24, 2017

Two matches this week:

• Oct. 23: Maxime-Vachier Lagrave vs Alexander Grischuk 
• Oct. 24: Sergey Karjakin vs Ian Nepomniachtchi

Matches start at 10am PDT, 1pm EST

The format for the Chess.com matches is 3 hours of online play, broken into four formats: 

1. 90 minutes of 5+2 blitz, 
2. 60 minutes of 3+2 blitz,
3. 30 minutes of 1+1 bullet,
4. one chess960 game in each time control.  

Live Games (with commentary by FM Danny Rensch and ...?)

https://www.chess.com/tv

http://www.twitch.tv/Chess 

 TCEC Season 10

The only computer chess event that matters is the Thoresen Chess Engine Competion. Engines play on identical hardware and use identical opening books, making it the best test of playing strength. It's also the event that the engine developers take seriously, with the top ones submitting development builds of their best programs, including Stockfish, Komodo, Houdini, and Fire.

This year's big innovation is the upgraded hardware: an exceptionally powerful 44 core Xeon server, more than double the power last year's host.

Like it or not, this tournament will have a strong claim to featuring the best chess ever played.

TCEC Season 10 consists of three stages:  

• Stage 1: 24 engines; single round robin; TC: 60m + 10s. 
• Stage 2: The top 8 engines from stage 1 play a double RR; TC: 90m + 10s.
• Superfinal: Top 2 from stage 2 play a 100 game match.

 With the exception of stage 1, engines play both sides of each opening book position.

Live Games  24/7 :

http://tcec.chessdom.com/live.php 

 The diagram is a puzzle created by Martin Thoresen to celebrate the 10th TCEC: with pieces in the shape of a 10, it is mate in 10:

..

[Event "TCEC 10 puzzle"]
[Site "chessdom"]
[Date "2017.10.21"]
[Round "?"]
[White "Mate in 10"]
[Black "?"]
[Result "*"]
[Annotator "John Upper"]
[SetUp "1"]
[FEN "8/1r3pr1/1P2k2B/1p2p2R/1p2P2N/1P2K2n/1R3PP1/8 w - - 0 1"]
[PlyCount "13"]

{[#]} 1. Bxg7 {There are multiple defences available, but none push the mate
back beyond 10 moves. I have included a few in the solution.} f6 (1... Nf4 2.
Rh6+ Ng6 3. Rc2 Rd7 (3... Ke7 4. Nxg6+ fxg6 5. Bxe5 {#5}) 4. Rc6+ Rd6 5. Nxg6
f6 6. Rc7 Rxb6 7. Bxf6 Kxf6 8. f4 exf4+ 9. Kxf4 Ke6 10. Nh4#) (1... Rxb6 2.
Rh6+ (2. Rd2 {transposes.}) 2... f6 3. Rxf6+ {#7} (3. Ra2 {#7})) (1... f5 2.
exf5+ Kf7 3. Bxe5 {#7} (3. gxh3 {#7})) (1... f6 2. gxh3 Rxb6 3. Rc2 {#7.}) 2.
gxh3 Rxb6 (2... Rxg7 3. Rd2 Rd7 4. Nf5 Rxd2 5. Kxd2 Kd7 6. Rh7+ Kc6 7. b7 {#2})
3. Rc2 Rd6 4. Bxf6 Rd1 (4... Kxf6 5. Rc7 {#4}) 5. Nf3 Kxf6 6. Rc7 Kg6 7. Rch7 {
#3} *

..