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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Thu Jan 18, 2018 6:44 pm    Post subject: Excalibur Igor leads the match 4.5-3.5 Reply with quote

Excalibur Igor should've won this game, being two pawns up in the endgame. As it is the game is drawn, but Igor clings to a 4.5-3.5 lead in the match.




In this position, all white had to do to preserve the win is protect the a-pawn with Bb7. As it is he plays a King move, lets Black win the pawn, and draw instead of getting the win!


Shameful.

Here's the full game, for those of you who can stomach it: https://lichess.org/yylOlwJj#0
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TracySMiller
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Joined: 13 Mar 2016
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Thu Jan 18, 2018 6:59 pm    Post subject: Match is tied 4.5-4.5 Reply with quote

The RS Chess Master ties the match with nice play here, making only 1 mistake and 1 blunder. Now we have a real fight on our hands!



In this position, Black gets greedy and grabs the "poisoned" pawn on b3 with his Bishop. White takes advantage and plays good chess the rest of the way to win the game and even the match.

Here's the full game: https://lichess.org/q2lSlOR5#0
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TracySMiller
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Joined: 13 Mar 2016
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Fri Jan 19, 2018 1:54 pm    Post subject: Excalibur Igor leads the match 5.5-4.5 Reply with quote

Excalibur Igor takes the lead with this victory and is now just one point away from winning the match. Black chose the seldom played Horowitz Defense, and the resulting unbalanced play leads to a rook-and-pawn endgame which Igor plays just a bit better. Here is one of the key moments:



Here white played 34. Rc1, threatening the back rank mate. Black must retreat his rook to defend, thus leaving the b5 pawn undefended. White chomps the pawns and plays a nice endgame to get the win.

Here's the game: https://lichess.org/CLr3d14J
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paulwise3
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Joined: 06 Jan 2015
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Location: Eindhoven, Netherlands

PostPosted: Fri Jan 19, 2018 6:53 pm    Post subject: Reply with quote

Thanx again for these games Tracy!
I am getting doubts about the Chess Master being a clone of the GK 2000. According to the wiki, the Igor should be more then 100 elo less then the GK 2000, so a result like this does hardly make sense. Next week I will try to replay some of these games with the GK 2000 or one of it's clones, to see if they make the same moves.

Best regards,
Paul
_________________
If I am mistaken, it must be caused by a horizon effect...
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TracySMiller
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Joined: 13 Mar 2016
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Fri Jan 19, 2018 7:36 pm    Post subject: Reply with quote

It could simply be the small number of games I'm playing the true strength doesn't show up. I'm sure the wiki is based on a much larger sampling of games.
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TracySMiller
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Joined: 13 Mar 2016
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Sun Jan 21, 2018 12:39 am    Post subject: Match is tied 5.5-5.5 Reply with quote

The RS Chess Master comes storming back with a victory to tie the match. In the seldom played London System, The Excalibur Igor made some innacurate moves, and the RS Chess Master made him pay, getting a pawn ahead and playing a good endgame to get the win. No mistakes or blunders for the RS Chess Master! Here was a critical position:



Black has already played innacurately, and White could easily move the attacked Knight to take the e-pawn, but it chooses a much sharper line, taking with the Bishop instead. The match in now tied 5.5-5.5.

Here's the game: https://lichess.org/UCLaJn3V
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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Sun Jan 21, 2018 1:01 am    Post subject: Match still tied at 6.0-6.0 Reply with quote

This was a frustrating game, because RS Chess Master had a chance to to put the game, and the match, away, but didn't follow up the attack accurately. Here's a key position: Black has white pinned down, and lets him slip away.



In this position, Black should keep the pressure up by pushing the f-pawn to f5. Instead, Black plays innacurately and lets White back into the game. The game eventually drifts into a Rook and Pawn endgame, with both units missing winning opportunities, before the game ends in a draw.

The match is now tied after the allotted 12 games. As a tie breaker, I'm going to play two games, letting each unit have White once.

Here's the game: https://lichess.org/dVLwTJ1R
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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Sun Jan 21, 2018 3:51 am    Post subject: RS Chess Master leads 7.0-6.0 Reply with quote

The RS Chess Master wins the first game of the tie breaker in impressive fashion, using back-rank checkmate threats and taking advantage of Igor mistakes. Here's a key position:



White has just played Ng5, attacking the Queen. Black makes a fatal mistake of trying to grab a pawn on e2 and keep his rook defended. But after white plays Bd5, Black has to lose his rook to defend against the back rank mate. Now the pressure is on because Excalibur's Igor has to win the next game.

Here's the game: https://lichess.org/UsHpvUOh
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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Sun Jan 21, 2018 5:40 am    Post subject: Radio Shack Chess Master wins match 8.0-6.0 Reply with quote

The Radio Shack Chess Master wins the match in convincing style, advancing to the Quarter Finals with two straight victories over the Excalibur Igor after a tight match that could've gone either way.

In this position, Black is already ahead, but White can maybe hang on with 51. Nxe6. But after the King move, Black starts advancing the h-pawn, and it's all over.




So Radio Shack Chess Master wins the match. This match has been a long one, and I was pretty happy to put these two units away and get on to some different machines.

Here's the game: https://lichess.org/W1DmAnoF

As a reminder, here's the spreadsheet with the tournament results thus far: https://docs.google.com/spreadsheets/d/1e4-EMqFqcZw9_MdI26Zf_x-x8-k3SaKk1Z2m0XWr9Ng/edit?usp=sharing
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TracySMiller
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Full Name: Tracy S. Miller
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PostPosted: Mon Jan 22, 2018 2:54 pm    Post subject: Excalibur Grandmaster leads 1.0-0.0 Reply with quote

Alrighty...on to the last match of Round One: Excalibur's Grandmaster vs Fidelity Excellence. The form factor of these two machines couldn't be more different, with Grandmaster's big tournament-sized board and radio recognized pieces which don't require any pressing down, versus the ancient Excellence, which I have to pry open to get to the power switch to turn on almost every time, but it still works (except for the b-column LED light).

The Fidelity machine makes some inaccurate moves in the opening, leading to this blunder:




White shouldn't take the d-pawn with his Knight, because after Knight takes Knight, Queen takes Knight, Black has the easy pawn fork with e5. The Excalibur Grandmaster doesn't have much problem with the win after gaining this material advantage.

Here's the game: https://lichess.org/vZkaB6np
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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Wed Jan 31, 2018 3:26 pm    Post subject: Excalibur Grandmaster leads 1.5-0.5 Reply with quote

The Richter-Rauzer variation of the Sicilian leads to this fairly early threefold-repetition draw. No mistakes or blunders from either computer. Excalibur Grandmaster leads the match 1.5-0.5

Here's the final position:



Here's the game: https://lichess.org/ml6n0g0R#0
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TracySMiller
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Joined: 13 Mar 2016
Posts: 191
Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Wed Jan 31, 2018 3:41 pm    Post subject: Excalibur Grandmaster leads 2.5-0.5 Reply with quote

A tough game that was pretty even until a few critical mistakes by Fidelity Excellence. Excalibur Grandmaster takes a 2.5-0.5 lead in the match.

Here's the most hurtful mistake:



In this position, white is already a pawn down, but after the blunder gxf5??, Stockfish sees a Mate in 15.

Here's the game: https://lichess.org/7GlDSMlU#0
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TracySMiller
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Full Name: Tracy S. Miller
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PostPosted: Fri Feb 02, 2018 2:19 am    Post subject: Excalibur Grandmaster leads 3.5-0.5 Reply with quote

In a Sicilian, Alapin variation, the Fidelity Excellence makes 8 mistakes to the Excalibur Grandmaster's 3. No position really stood out to me, but the cumulative mistakes by the Excellence really took its toll, and now the Excalibur Grandmaster leads the match 3.5-0.5.

Here's the game: https://lichess.org/zzTl2hnx
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TracySMiller
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PostPosted: Fri Feb 02, 2018 2:33 am    Post subject: Excalibur Grandmaster leads match 3.5-1.5 Reply with quote

The Fidelity Excellence scores its first full point in the match in this fascinating game in which the Excellence misses a few key moves which would have guaranteed victory, and lets the game drift into what should've been a draw, until the Excalibur Grandmaster makes a fatal mistake.



In this position, the Excellence misses the devastating 31. Rc1!, with the double attack on the Knight, which can't move due to the hanging rook on c8. This next position is the critical one, though:



The Excalibur Grandmaster thinks it has a clever trick by playing 52...f2, thinking that if the White King takes the pawn, the Black has a double attack on the White Rook, winning it. But Fidelity's Excellence has looked beyond this, figuring that Black's Rook cannot stop the the connected passed pawns, and it coasts to victory. The Excalibur Grandmaster still leads the match 3.5-1.5, though.


Here's the game: https://lichess.org/IzjJQH0V
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TracySMiller
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Full Name: Tracy S. Miller
Location: Kingsport, TN

PostPosted: Fri Feb 02, 2018 5:04 pm    Post subject: Excalibur Grandmaster leads 4.5-1.5 Reply with quote

The Fidelity Excellence returns to its mistake-ridden ways, making 7 to only 2 for Excalibur's Grandmaster, which now leads the match 4.5-1.5. Here's the most egregious of the mistakes:



Here, Fidelity Excellence played ...bxc3?? Why on earth does the Fidelity unit think it's a good idea to leave its Rook en prise? Does it think it can possibly promote that advanced pawn? Aye, yai, yai...

Here's the game: https://lichess.org/UF3D8R2r
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