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an UCI compliant chess engine written by Engin Üstün since 2004. Tornado is bitboard based, generates sliding piece attacks with magic bitboards, and applies PVS with aspiration, null move pruning with verification search, internal iterative deepening, razoring, history leaf pruning, futility pruning, late move reductions, and check extensions, one reply and singular extensions, as well as passed pawn extensions, either after establishing a new passer after a capture, or pushes to the 7th rank. Tornado has a multi-threaded search with up to 16 cores, and supports Nalimov tablebases in endgames [1] .
Able to play Chess960, Tornado participated at the Chess960CWC 2006, and further at various CCT Tournaments, first was the CCT8 in 2006.
Tornado in Manhattan, Kansas, 1949 [2]


CCT14, round 4, Tornado - The Baron [3]
[Event "CCT14"]
[Site "Internet Chess Club"]
[Date "2012.02.25"]
[Round "4"]
[White "Tornado"]
[Black "The Baron"]
[Result "1-0"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5
8.Qxd8+ Kxd8 9.Nc3 Ke8 10.h3 h6 11.b3 Be7 12.Bb2 Nh4 13.Nxh4 Bxh4 14.Ne2
a5 15.a4 c5 16.Nf4 Bf5 17.Nd5 Kd7 18.Ne3 Bg6 19.e6+ fxe6 20.Rad1+ Kc6
21.Bxg7 Rh7 22.Be5 b6 23.g3 Be7 24.Rfe1 Be4 25.f4 Rd8 26.Rxd8 Bxd8 27.Re2
Rd7 28.Ng4 Bf3 29.Re3 Bd1 30.c4 Bc2 31.Nxh6 Rd1+ 32.Kf2 Rd2+ 33.Re2 Rxe2+
34.Kxe2 Bxb3 35.h4 Bxc4+ 36.Kd2 Bd5 37.Nf7 Be7 38.h5 Bf3 39.h6 Be4 40.g4
Bh7 41.g5 c4 42.Nh8 Bb4+ 43.Ke3 Bf8 44.Bg7 Bxg7 45.hxg7  b5 46.axb5+ Kxb5
47.g6 Bg8 48.Nf7 a4 49.Nh6 a3 50.Nxg8 a2 51.Ne7 a1=Q 52.g8=Q Qe1+ 53.Kf3
c3 54.Qb8+ Ka4 55.Qa7+ Kb3 56.g7 c2 57.g8=Q c1=Q 58.Qb7+ Ka2 59.Qg2+ Qcd2
60.Qxd2+ Qxd2 61.Qa6+ Kb1 62.Qxe6 Qd3+ 63.Qe3 Qf1+ 64.Kg3 Qa6 65.f5 Qf6
66.Kg4 Qg7+ 67.Kh5 c5 68.Qxc5 Qf6 69.Ng6 Qd8 70.Qg1+ Kc2 71.Qf2+ Kd3
72.f6 Qd5+ 73.Kg4 Qc4+ 74.Qf4 Qa2 75.Ne5+ Kc3 76.Qe3+ Kc2 77.Qe2+ Kb3
78.Qxa2+ Kxa2 79.f7 Ka3 80.f8=Q+ Kb3 81.Qf4 Kb2 82.Qe3 Kc2 83.Nc4 Kb1
84.Qd2 Ka1 85.Qc1+ Ka2 86.Qb2#  1-0

See also

Forum Posts


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External Links

Chess Engine



  1. ^ Features - Tornado Chess Engine (dead link)
  2. ^ Tornado from Wikipedia.de (German)
  3. ^ CCT14 games
  4. ^ using Popcount and Prefetch with SSE4 hardware support by Engin Üstün, CCC, May 19, 2012 » Population Count, Memory, SSE4

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