Counter

Counter is a free, open-source chess engine, implemented in Go. Counter supports standard UCI (universal chess interface) protocol.

Strength

Chess ratings are available at Computer Chess Rating Lists:

• CCRL 40/4

• CCRL 40/40

Commands

Counter supports UCI protocol commands and own commands:

• move e2e4 - play chess with engine in REPL mode

Features

Board

• Magic bitboards

Evaluation

• Texel's Tuning Method

Search

• Parallel search
• Iterative Deepening
• Principal Variation Search
• Transposition Table
• Null Move Pruning
• Late Move Reductions
• Futility Pruning
• Move Count Based Pruning

Information about chess programming

• Chess Programming Wiki
• Bruce Moreland's Programming Topics

Thanks

• Vladimir Medvedev, GreKo
• Fabien Letouzey, Fruit and Senpai
• Robert Hyatt, Crafty

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Counter Copyright (c) Vadim Chizhov. All rights reserved.