www.arves.org - CQL Many checks

An html version of ManyChecks.cql. Created by Gady Costeff and Lewis Stiller.

(match
 :pgn heijden.pgn
 :output manychecks.pgn
 :forany checker A
 (position
   :btm
   :attackcount $checker k 1
   :matchcount 30 1000)
)

After executing this with "> cql ManyChecks.cql" there are 61 studies found in the Harold van der Heijden Database 2015.
NB. When you see {MATCH} in the text, it means that cql has found the position asked for.

Below only 5 studies are presented:

[Event "223 Eindspelstudies 1948-2009#219"] [Site ""] [Date "2009"] [Round ""] [White "Vandiest=J"] [Black "(+4010.05b1d2)"] [Result "1-0"] [EventDate "2009"] [SetUp "1"] [PlyCount "93"] [FEN "5q2/p6p/7p/4p3/4Q3/3B2p1/3k4/1K6 w - - 0 1"] 
 {Original game: 5344} 1.Bb5 $1 ( 1.Qe2+ $2 Kc3 2.Qc2+ Kd4 3.Qc4+ Ke3 4.Qe4+ Kd2 ) 1...Qa3 $1 ( 1... Qf2 2.Qd3+ Ke1 3.Qc3+ Qd2 4.Qxg3+ Qf2 5.Qc3+ Qd2 6.Qxe5+ $1 Kf2 7.Qh2+ Ke3 8. Qxh6+ ) ( 1...Kc3 2.Qc4+ Kd2 3.Qc1# ) ( 1...Qd6 2.Qe2+ Kc3 3.Qb2# ) ( 1...Qd8  2.Qe2+ Kc3 3.Qb2# ) ( 1...Qc5 2.Qe2+ Kc3 3.Qb2# ) 2.Qe2+ {MATCH} 2...Kc3 3. Qxe5+ $1 {MATCH} ( 3.Qd3+ $2 Kb4 4.Qd6+ Kb3 5.Qd2 e4 $1 ) 3...Kd2 4.Qe2+ {MATCH } 4...Kc3 5.Qd3+ {MATCH} 5...Kb4 6.Qd6+ {MATCH} 6...Kb3 7.Qxg3+ {MATCH} 7...Kb4 8.Qd6+ {MATCH} 8...Kb3 9.Qd2 $1 h5 10.Qd3+ {MATCH} 10...Kb4 11.Qd6+ {MATCH}  11...Kb3 12.Qd2 $1 h6 13.Qd3+ {MATCH} 13...Kb4 14.Qd6+ {MATCH} 14...Kb3 15.Qd2  h4 16.Qd3+ {MATCH} 16...Kb4 17.Qd6+ {MATCH} 17...Kb3 18.Qd2 $1 h5 19.Qd3+ { MATCH} 19...Kb4 20.Qd6+ {MATCH} 20...Kb3 21.Qd2 $1 h3 22.Qd3+ {MATCH} 22...Kb4  23.Qd6+ {MATCH} 23...Kb3 24.Qd2 $1 h4 25.Qd3+ {MATCH} 25...Kb4 26.Qd6+ {MATCH}  26...Kb3 27.Qd2 $1 h2 28.Qxh2 Kc3 29.Qe5+ {MATCH} 29...Kd2 30.Qe2+ {MATCH}  30...Kc3 31.Qd3+ {MATCH} 31...Kb4 32.Qd6+ {MATCH} 32...Kb3 33.Qd2 $1 h3 34.Qd3+ {MATCH} 34...Kb4 35.Qd6+ {MATCH} 35...Kb3 36.Qd2 $1 h2 37.Qxh2 Kc3 38.Qg3+ { MATCH} 38...Kb4 39.Qd6+ {MATCH} 39...Kb3 40.Qd2 $1 a6 41.Qd3+ {MATCH} 41...Kb4  42.Qd6+ {MATCH} 42...Kb3 43.Bc4+ {MATCH} 43...Ka4 44.Qxa6+ {MATCH} 44...Kb4 45. Qd6+ {MATCH} 45...Ka4 46.Bb5+ {MATCH} 46...Kb3 47.Qd2 $1 1-0

[Event "HHdbIII#00358 (ph)"] [Site ""] [Date "2005"] [Round ""] [White "Wortel=N"] [Black "(+4007.03d8b8)"] [Result "1-0"] [EventDate "2005"] [SetUp "1"] [PlyCount "97"] [FEN "1k1K4/2N5/2q1p3/Q3p3/8/4p3/5n2/6n1 w - - 0 1"] 
 {Original game: 9210 composed 1941?.} 1.Na6+ {MATCH} 1...Kb7 ( 1...Qxa6 2.Qxa6 Ne4 3.Qb6+ Ka8 4.Kc7 ) 2.Nc5+ {MATCH}  2...Kb8 ( 2...Qxc5 3.Qxc5 Ne4 4.Qb5+ Ka7 5.Kc7 ) 3.Nd7+ {MATCH} 3...Kb7 4.Qb4+  {MATCH} 4...Ka7 5.Qa3+ {MATCH} 5...Kb7 ( 5...Qa6 6.Qc5+ Ka8 7.Nb6+ Ka7 8.Nd5+ ) 6.Qb3+ {MATCH} 6...Ka7 7.Qxe3+ {MATCH} 7...Kb7 8.Qb3+ {MATCH} 8...Ka7 9.Qa3+ { MATCH} ( 9.Qa2+ $2 Qa6 $1 ) 9...Kb7 10.Qb2+ {MATCH} 10...Ka7 11.Qxf2+ {MATCH}  11...Kb7 12.Qb2+ {MATCH} 12...Ka7 13.Qa1+ {MATCH} 13...Kb7 ( 13...Qa6 14.Qxg1+  Ka8 15.Qc5 Qb7 16.Qxe5 Qa7 17.Qe4+ Qb7 18.Qa4+ Qa7 19.Qc4 ) 14.Qb1+ {MATCH}  14...Ka7 15.Qxg1+ {MATCH} 15...Ka8 16.Qa1+ {MATCH} 16...Kb7 17.Qb1+ {MATCH}  17...Ka7 18.Qb4 e4 19.Qa3+ {MATCH} 19...Kb7 20.Qb3+ {MATCH} 20...Ka7 21.Qb4 e3  22.Qa3+ {MATCH} 22...Kb7 23.Qb3+ {MATCH} 23...Ka7 24.Qxe3+ {MATCH} 24...Ka8 25. Qa3+ {MATCH} 25...Kb7 26.Qb3+ {MATCH} 26...Ka7 27.Qb4 e5 28.Qa3+ {MATCH} 28... Kb7 29.Qb3+ {MATCH} 29...Ka7 30.Qb4 e4 31.Qa3+ {MATCH} 31...Kb7 32.Qb3+ {MATCH} 32...Ka7 33.Qb4 e3 34.Qa3+ {MATCH} 34...Kb7 35.Qb3+ {MATCH} 35...Ka7 36.Qxe3+ { MATCH} 36...Ka8 37.Qa3+ {MATCH} 37...Kb7 38.Qb3+ {MATCH} 38...Ka7 39.Qb4 Qh6 (  39...Qb7 40.Qd4+ Ka8 41.Qa4+ Qa7 42.Qc4 ) 40.Qa5+ {MATCH} 40...Qa6 41.Qc5+ { MATCH} 41...Ka8 42.Qb4 Qb7 43.Qa4+ {MATCH} 43...Qa7 44.Qc4 Qa5+ 45.Kc8 Ka7 46. Qd4+ {MATCH} 46...Ka6 47.Qd6+ {MATCH} 47...Kb5 48.Qc5+ {MATCH} 48...Ka4 49.Nb6+ {MATCH} 1-0

[Event "Gießener Freien Presse"] [Site ""] [Date "1955"] [Round ""] [White "Gallischek=O"] [Black "(+4307.22e3a8)"] [Result "1-0"] [EventDate "1955"] [SetUp "1"] [PlyCount "83"] [FEN "k1q4r/p7/P3P3/1N6/8/nQ2K3/6p1/2n5 w - - 0 1"] 
 {Original game: 55879} 1.Qd5+ {MATCH} 1...Kb8 2.Qe5+ {MATCH} 2...Ka8 3.Qe4+ {MATCH} 3...Kb8 4.Qf4+ { MATCH} 4...Ka8 5.Qf3+ {MATCH} 5...Kb8 6.Qg3+ {MATCH} 6...Ka8 7.Qxg2+ {MATCH}  7...Kb8 8.Qg3+ {MATCH} 8...Ka8 9.Qf3+ {MATCH} 9...Kb8 10.Qf4+ {MATCH} 10...Ka8  11.Qe4+ {MATCH} 11...Kb8 12.Qe5+ {MATCH} 12...Ka8 13.Nc7+ {MATCH} 13...Kb8 (  13...Qxc7 14.Qxh8+ Qb8 15.Qh1+ ) 14.Ne8+ {MATCH} 14...Ka8 15.Qe4+ {MATCH} 15... Kb8 16.Qf4+ {MATCH} 16...Ka8 17.Qf3+ {MATCH} 17...Kb8 18.Qg3+ {MATCH} 18...Ka8  19.Qg2+ {MATCH} 19...Kb8 20.Qb2+ {MATCH} 20...Nb3 ( 20...Ka8 21.Nc7+ Qxc7 22. Qxh8+ Qb8 23.Qh1+ ) 21.Qxb3+ {MATCH} 21...Ka8 22.Qd5+ {MATCH} 22...Kb8 23.Qe5+  {MATCH} 23...Ka8 24.Qe4+ {MATCH} 24...Kb8 25.Qf4+ {MATCH} 25...Ka8 26.Qf3+ { MATCH} 26...Kb8 27.Qg3+ {MATCH} 27...Ka8 28.Qg2+ {MATCH} 28...Kb8 29.Qb2+ { MATCH} 29...Nb5 30.Qxb5+ {MATCH} 30...Ka8 31.Qd5+ {MATCH} 31...Kb8 32.Qe5+ { MATCH} 32...Ka8 33.Qe4+ {MATCH} 33...Kb8 34.Qf4+ {MATCH} 34...Ka8 35.Qf3+ { MATCH} 35...Kb8 36.Qg3+ {MATCH} 36...Ka8 37.Qg2+ {MATCH} 37...Kb8 38.Qb2+ { MATCH} 38...Ka8 39.Nc7+ {MATCH} 39...Qxc7 40.Qxh8+ {MATCH} 40...Qb8 41.Qh1+ { MATCH} 41...Qb7 42.Qxb7# {MATCH} 1-0

[Event "De Schaakwereld#421 (c)"] [Site ""] [Date "1942.01.01"] [Round ""] [White "Kok=T"] [Black "(+4004.15g2d4)"] [Result "1-0"] [EventDate "1942"] [SetUp "1"] [PlyCount "95"] [FEN "8/pp5p/1n5p/5p2/N2k4/8/P1Q3K1/4q3 w - - 0 1"] 
 {Original game: 63502 (c): Kok=T De Zwarte Dame in Zetdwang#25 1991.} 1.Qc5+ {MATCH} 1...Kd3 ( 1...Ke4 2.Qe7+ ) 2.Nb2+ {MATCH} 2...Kd2 3.Qa5+ {MATCH} 3...Ke2 4.Qxf5 Ke3 5.Qe5+ {MATCH} 5...Kd2 6.Qa5+ {MATCH} 6...Ke2 7.Qb5+ {MATCH} 7...Ke3 ( 7...Kd2 8.Qb4+ ) 8.Qc5+ {MATCH} 8...Ke2 ( 8...Kf4 9.Nd3+ ) ( 8...Ke4  9.Qe7+ ) ( 8...Kd2 9.Qb4+ ) 9.Qe7+ {MATCH} 9...Kd2 10.Qb4+ {MATCH} 10...Ke2 11. Qf4 h5 12.Qe5+ {MATCH} 12...Kd2 13.Qa5+ {MATCH} 13...Ke2 14.Qxh5+ {MATCH} 14... Kd2 15.Qa5+ {MATCH} 15...Ke2 16.Qb5+ {MATCH} 16...Ke3 17.Qc5+ {MATCH} 17...Ke2  18.Qe7+ {MATCH} 18...Kd2 19.Qb4+ {MATCH} 19...Ke2 20.Qf4 h6 21.Qe4+ {MATCH}  21...Kd2 22.Qb4+ {MATCH} 22...Ke2 23.Qf4 h5 24.Qe5+ {MATCH} 24...Kd2 25.Qa5+ { MATCH} 25...Ke2 26.Qxh5+ {MATCH} 26...Kd2 27.Qa5+ {MATCH} 27...Ke2 28.Qb5+ { MATCH} 28...Ke3 29.Qc5+ {MATCH} 29...Ke2 30.Qe7+ {MATCH} 30...Kd2 31.Qb4+ { MATCH} 31...Ke2 32.Qf4 a6 33.Qe4+ {MATCH} 33...Kd2 34.Qb4+ {MATCH} 34...Ke2 35. Qf4 a5 36.Qe5+ {MATCH} 36...Kd2 37.Qxa5+ {MATCH} 37...Ke2 38.Qb5+ {MATCH} 38... Kd2 39.Qb4+ {MATCH} 39...Ke2 40.Qf4 Nd5 41.Qf3+ {MATCH} 41...Kd2 42.Nc4+ {MATCH } 42...Kc1 43.Qa3+ {MATCH} 43...Kc2 44.Qb3+ {MATCH} 44...Kc1 45.Qb2+ {MATCH}  45...Kd1 46.Qb1+ {MATCH} 46...Ke2 47.Qc2+ {MATCH} 47...Qd2 48.Qxd2# {MATCH} 1-0

Daily task - Stalemate

Daily task - White draws

Daily task - White wins.

Daily - Black playes White Wins