New ideas in Sicilian Najdorf Variation

After  1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Qc7 7.f5 !?.This is an unknown position in Sicilian Najdorf Variation (B93).
We test this chess position with 6 top chess engines in round robin Blitz tournament.And interesting results were obtained,
white win 11 games black win 4 games and draw in 15 games. The latest version of SugaR chess engine won the championship without loss,Stockfish 9 was also third  without loss.
1.SugaR RC2  2.Houdini 6.02 3.Stockfish 9 4.Komodo 11.2.2 5.Ethereal 11 6. Deep shredder 13

PC System Test Laptop Acer , CPU Pentium N3710 with 4 Core 1.6 Ghz turbo 2.6 Ghz ,4 GB RAM DDR 1600
Windows 10 64 bit,Fritz 16 GUI,Hash Size 128 MB use 2 Core
Time Blitz 5m+3s
Download PGN File Sicilian Najdorf Chess Engines Tournament

King’s Gambit Declined Heath Variation Engines Tournament

King’s Gambit Declined, classical, Heath variation
after 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.b4 ,
frist time played between Loewenthal,J – Harrwitz,D (0-1) 1853 and then played Morphy-Barnes,T (0-1) 1858
and Capablanca,J- Beup,P (1-0) 1911 Based on chess database MegaBase 2019.
We test King Gambit,Heath variant with 6 chess engines in tournament . after the end of the tournament, the following results are obtained.white win 8 games black win 11 games and draw 11 games.
White in this position does not get anything.

PC System Test Laptop Acer ,CPU Pentium N3710  4 Core with 4 GB RAM, 500 GB Hard
Windows 10  64bit, Fritz 16 GUI ,Hash Size 128 MB for 2 Core.
Download PGN file King Gambit Tournament


Scandinavian Defense Engines Tournament

Scandinavian Defense: Main Lines. Leonhardt Gambit (B01)
After 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.b4 .
This position first time play in 1909 All Russian Amateur (1909), St Petersburg RUE, rd 1, Feb-15 ,Viktor Nikolaev vs Georg Rotlewi  0-1
We test this position of Scandinavian Defense with 6 chess engines in robin blitz tournament 2 cycles .
white win in 12 games ,black win in 6 games and 12 games draw.

After 30 games, the following results are earned,The Stockfish 10 Chess Engine has become the champion
Houdini 6.02,Ethereal 11,Fire 7.1,Deep Shredder 13, Arasan 21.1 .

PC system test laptop Pentium N3710  4 Core 2600 MHz with 4 GB RAM –
Fritz 16 GUI ,Hash Size 128 MB , windows 10 64 bit – use 2 Core

Download PGN Scandinavian Chess Engines Tournament

Chess Engines and Ruy Lopez Marshall Attack

We test 6 top chess engines in above chess position in Ruy lopez Marshall attack opening variations. Komodo 11.2.2 chess engine very weak play in this tournament !.SugaR chess engine win 4 game with black.

PC System test Laptop pentium N3710 4 Core , 4Gig DDR 1600 Mhz,Windows 10
Fritz 16 GUI , Hash size 128 MB , 64 MB per Core (use 2 Core)
Blitz 5m+3s ,No book , all engines playing Ruy lopez Marshall attack variation
after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d5 9.exd5 Nxd5

Download engines tournament Marshall attack in Ruy Lopez (C89) , PGN file

Chess Engines Tournament,Marshall Attack

History of the Marshall Attack
Frank Marshall brought this ploy into the world back in 1918. His opponent was the Cuban maestro Jose Raul Capablanca. Frank J Marshall was the strongest US player of the day having won the US Championship several times. He was also one of the strongest players in the world.But Capablanca was one of only a handful of players that Marshall just couldn’t handle. They had played back in 1909 Capablanca had demolished him 8-1 with 14 draws. Half of Capa’s wins had come when he had played the Ruy Lopez with the White pieces. Marshall had not played the Ruy Lopez with Black since that massacre. Secretly however he worked long and hard on a brand new system to beat it.He waited for so long for a chance to play his new anti-Ruy Lopez system against Capa in a big tournament game. Finally after 9 long years his opportunity had arrived.

We test Marshall Attack with chess engines in special position .
after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Nf6 12.d4 Bd6 13.Re1 Ng4
Chess engines Participants in the tournament are: Stockfish 10 – Houdini 6.02 – Komodo 11.2.2 – SugaR RC2 – Fizbo 2-
Fire 7.1 – Ethereal 11 & DeepShredder 13.
We were surprised at the results , Of the 56 chess games, only one black was won.This chess position does not have anything for black .


chess engine test PC system Laptop
CPU Pentium N3710 – 4 Core Max 2.6 GHz with 4 GB RAM DDR3 1600 MHz
500 GB Hard – Win 10 – Fritz 16 Hash Size 64 MB per core use 2 core (2 CPU)- Blitz 5m + 3s
chess engine tournament games

Xiphos Chess Engine Test

The new superstar of computer chess – Xiphos, by Milos Tatarevic. Released just few months ago, Xiphos is now dominating the field in Div 2 of the Top Chess Engine Championship. With 10 rounds gone, it has 7,0/10 and solid advantage over seasoned fighters such as Fritz, Nirvana, or Hannibal.
Xiphos is a UCI chess engine. The engine employs the modern search techniques and supports multithreading.This project is inspired by Garry Kasparov’s “Deep Thinking: Where Machine Intelligence Ends and Human Creativity Begins.” This fantastic book has evoked my childhood passion, computer chess. I was wondering how hard it could be to develop an engine strong enough to surpass the legendary Deep Blue, so I gave it a try.

Xiphos Chess Engine Test Result

Xiphos 0.4 — Komodo 12 ==> 5-11
Xiphos 0.4 — Fire 7.1  ==> 4-12
Xiphos 0.4 — Fritz 16 ==> 9.5-6.5
Xiphos 0.4 — Stockfish 9 ==> 3-13
Xiphos 0.4 — Houdini 6.02 ==> 4-12

Xiphos 0.4 chess engine games  PGN format from mediafire server

PC Hardware For Test
Intel 4790 4 Core & 8 Thread – Use 6 thread (6 CPU)
RAM DDR 3  1333 MHz — win 10 ,Komodo 12 GUI
Hash size 128 MB per thread = 768 MB , Blitz  8 min + 3  (Fisher time)
Chess opening book ctg format (use in chessbase GUI) SCET.ctg up to 10 move per color white & black
Download chess opening book  SCET.ctg  7 MB from MediaFire  created by mehdi niakouei . this opening book is free.