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Stef Luijten,
a Dutch computer chess programmer and author of the chess engine Wing, and the loosely derived didactic open source engine Winglet, which was documented on the tutorial website Winglet, Writing a Chess Program in 99 Steps, now hosted by the Wayback Machine ^[1].

Forum Posts

2005 ...

• Hash table hit rate by Stef Luijten, Winboard Forum, November 16, 2005 » Transposition Table
• EGTB question by Stef Luijten, Winboard Forum, January 09, 2006
• Arrays with 64-bit addresses on a 32 bit machine? by Stef Luijten, Winboard Forum, January 21, 2006
• EGTB compression by Stef Luijten, Winboard Forum, February 10, 2006
• Re: history pruning/ late move pruning by Stef Luijten, Winboard Forum, March 02, 2006

2010 ...

• ms1bTable array in Eugene Nalimovs bitScanReverse by Stef Luijten, CCC, April 17, 2011 » Bitscan Reverse
• writing a chess engine in xx steps by wing, Winboard Forum, April 18, 2011 » Winglet
• Writing a chess program in xx steps by Stef Luijten, CCC, April 18, 2011
• Using bitfields to store a move? by Stef Luijten, CCC, May 01, 2011
• Castling legality check by Stef Luijten, CCC, May 03, 2011 » Castling
• Hashing the PV by Stef Luijten, CCC, June 06, 2011 » Principal Variation, Transposition Table
• Move ordering question by Stef Luijten, CCC, June 11, 2011 » Move Ordering
• a way to prevent broken PV's when using hash tables... by Stef Luijten, CCC, July 18, 2011

External Links

• Winglet, Writing a Chess Program in 99 Steps by Stef Luijten, hosted by the Wayback Machine
  01 Introduction - 05
  06 Reading user commands
  07 Internal representation of the chess board - bitboards » Board Representation, Bitboards
  08 Displaying the position » Chess Position
  09 Reading a FEN string » Forsyth-Edwards Notation
  10 Setting up the board manually
  11 The move generator » Move Generation
  12 Making the moves » Make Move
  13 The evaluation function » Evaluation
  14 Search » Search, Minimax, Alpha-Beta, PVS
  15 Mate and draw detection » Checkmate, Stalemate
  16 Repetition detection - Zobrist keys » Repetitions, Zobrist Keys
  17 Iterative deepening and move ordering » Iterative Deepening, Move Ordering
  18 Quiescence search and SEE » Quiescence Search, MVV-LVA, SEE
  19 Null move pruning » Null Move Pruning
  20 Time control and running test suites » Time Management
  21 Connecting to Winboard » CECP, WinBoard

References

1. ^ Winglet, Writing a Chess Program in 99 Steps by Stef Luijten, hosted by the Wayback Machine

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