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Clarabit,
a Chess Engine Communication Protocol and UCI compatible chess engine by Salvador Pallares Bejarano, dedicated to his daughter Clara ^[1]. Clarabit is Bitboard based and applies Magic bitboards, as acknowledged to Pradu Kannan in the Readme.txt file ^[2]. Salvador provides executables running under Linux and Windows, 32 as well as 64 bit versions.

Search

Clarabit's search performs and uses ^[3]:

• Principal Variation Search
• Limited Quiescence Search
• Static Exchange Evaluation and MVV-LVA
• Adaptive Null Move Pruning
• Transposition Table
• Pawn Hash Table
• History Heuristic
• Killers and Mate Killers
• Check Extensions
• Late Move Reductions

Evaluation

Clarabit's evaluation is based on:

• Material
• Mobility (attack bitboards)
• Piece-Square Tables
• Piece type Positional Knowledge
• Pawn Structure
  • Doubled Pawn
  • Backward Pawn
  • Isolated Pawn
  • Passed Pawn
  • Candidate Passed Pawn
• King Safety
• Specific Endgame Knowledge

External Links

• Clarabit Chess Engine
• clarabit - Wiktionary

References

1. ^ Clarabit Chess Engine
2. ^ Clarabit Chess Engine - downloads
3. ^ Clarabit Chess Engine - Technical Info

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