Home * Engines * Matilde

a WinBoard compliant chess engine written by Andrea Lanza in Visual Basic and later ported to C++, first released in May 2005 [1], the Basic program as open source engine [2]. Matilde utilizes a Mailbox board representation. Alpha-beta is used inside an iterative deepening framework with aspiration windows. Checks and certain passed pawn moves are extended.
Matilde logo [3]

Tournament Play

The Visual Basic version 2.5.5 participated at the Italian CCC 2005, subsequent C versions the CIPS 2006, CIPS 2007, CCC 2008, and the WCRCC 2007 and WCRCC 2008 ACCA World Computer Rapid Chess Championship.

Selected Games

WCRCC 2008, round 8, Matilde - Buzz [4]
[Event "ICC tourney 864 (25 4 u)"]
[Site "Internet Chess Club"]
[Date "2008.06.21"]
[Round "8"]
[White "Matilde"]
[Black "Buzz"]
[Result "1-0"]
1.d3 d5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bf4 Bg4 5.Nb5 Bxf3 6.Nxc7+ Kd7 7.Nxa8 Bh5 
8.g3 Qxa8 9.Bh3+ e6 10.O-O Qd8 11.Bg2 Qb6 12.c3 Qxb2 13.Rb1 Qxa2 14.Rxb7+ 
Ke8 15.Re1 a5 16.Rc7 Nd8 17.h3 Be7 18.g4 Bg6 19.Qa1 Qxa1 20. Rxa1 h5 
21.g5 Nh7 22.Rxa5 f6 23.Raa7 Bf8 24.gxf6 Nxf6 25.c4 Bf5 26.c5 Rg8 27.Be5 
Nd7 28.Rxd7 Nc6 29.e4 dxe4 30.dxe4 Bg6 31.Bd6 Nxa7 32.Rxa7 e5 33.f4 Bxd6 
34.cxd6 Rf8 35.fxe5 Rf7 36.Ra8+ Kd7 37.h4 Ke6 38.Ra5 Bxe4 39.Bxe4 Rf8 
40.Ra8 Rxa8 41.Bxa8 g6 42.Kf2 g5 43.hxg5 h4 44.Kg2 h3+ 45.Kxh3 Kxe5 46.d7 
Kd4 47.g6 Kc4 48.g7 Kb5 49.g8=Q Kc5 50.Qc8+ Kb4 51.d8=Q Ka3 52.Qb6 Ka4 
53.Qca6#  1-0

See also


  • Andrea Lanza (2006). Come realizzare un motore scacchistico. DEV Speciale No. 141, June 2006 (Italian)
  • Quando i computer giocano a scacchi. pdf
  • Realizzazione di un motore scacchistico in Visual Basic 6. pdf
    Rappresentazione della scacchiera. pdf
    Gli algoritmi di ricerca. pdf
    Scacco matto. pdf

External Links

Chess Engine



  1. ^ Matilde
  2. ^ Matilde - Downloads - MatildeVB255Source.zip
  3. ^ Andrea Lanza (2006). Come realizzare un motore scacchistico. DEV Speciale No. 141, June 2006, Quando i computer giocano a scacchi. pdf
  4. ^ 2008 Second Annual ACCA World Computer Chess Championships - Results

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