www.arves.org - CQL Doublecheck and Mate

This DoublecheckMate.cql finds studies where a Doublecheck does also Mate the black king.

Created by Peter Boll.

;; Doublecheck Mates
(match
 :pgn heijden.pgn
 :output DoublecheckMate.pgn
(position :flipcolor :variations :terminal :mate :attackcount A k 2) 
)

211 studies are found. Here a few presented:

[Event "UAPA internet ty#13"] [Site ""] [Date "2015.03.11"] [Round "3"] [White "Minski=M"] [Black "(+0430.31e4a8)"] [Result "1-0"] [EventDate "2015"] [SetUp "1"] [PlyCount "19"] [FEN "k7/p3P2R/P7/8/4K1r1/P7/8/4b3 w - - 0 1"] 
 {Original game: 571} 1.Kf3 $1 ( 1.Kd5 $2 Rg8 2.Kc6 Re8 3.Kd7 Rxe7+ 4.Kxe7 Bg3 5.Rh8+ Bb8 ) 1...Rg8 ( 1...Rg3+ 2.Ke2 Rg8 3.Kxe1 ) 2.Rg7 $1 ( 2.Rf7 $2 Bg3 $1 3.Rf8+ ( 3.Rg7 Bb8 $1 4. Rxg8 ) 3...Bb8 4.e8=Q Rxf8+ 5.Qxf8 ) 2...Rb8 ( 2...Re8 3.Rf7 ) ( 2...Rh8 3.Rf7  ) 3.Kg4 $1 ( 3.Rf7 $2 Bh4 ) 3...Bf2 ( 3...Ba5 4.Rf7 Rg8+ 5.Kh5 ( 5.Kf5 $2 Bc7  6.Rf8+ Bb8 7.e8=Q ( 7.e8=B Rxf8+ ) 7...Rxf8+ 8.Qxf8 ) 5...Rh8+ 6.Kg6 Rg8+ (  6...Bc7 7.Rf8+ Bb8 8.e8=B $1 ) 7.Kh7 ( 7.Kh6 $2 Bc7 8.Rf8+ Bb8 9.e8=B Bf4+ $1  10.Rxf4 Rxe8 ) 7...Re8 8.Rf8 Bc7 9.Rxe8+ Bb8 10.Rxb8+ ) ( 3...Bc3 4.Rf7 Be5 5. Rf8 Bd6 6.Rxb8+ Bxb8 7.a4 ( 7.e8=Q $2 ) 7...Bd6 8.e8=Q+ ) 4.Rg5 Bb6 ( 4...Re8  5.Rf5 Bc5 ( 5...Rg8+ 6.Kh5 Rh8+ 7.Kg6 Bg3 8.Rf8+ Bb8 9.e8=B $1 ) ( 5...Rxe7 6. Rf8+ Re8 7.Rxe8# ) 6.Rxc5 Kb8 7.Re5 ( 7.Rb5+ $2 Kc8 8.Rb7 Rg8+ 9.Kf5 Rg5+ $1  10.Kxg5 ) 7...Kc7 8.Kf5 Kd7 9.Kf6 ) 5.Rf5 Rg8+ 6.Kh5 ( 6.Kf3 $2 Bc7 7.Rf8+ Bb8  8.e8=Q Rxf8+ 9.Qxf8 ) 6...Rh8+ ( 6...Bc7 7.Rf8+ Bb8 8.e8=B $1 Rg6 9.Kxg6 ( 9. Bxg6 $2 ) ) ( 6...Bd8 7.Rf8 ) 7.Kg6 Bc7 8.Rf8+ Bb8 9.e8=B $1 ( 9.e8=Q $2 Rg8+  10.Rxg8 ) 9...Be5 ( 9...Rxf8 {<main>} 10.Bc6# ) 10.Bc6# {MATCH} 1-0

[Event "1/2.p Hlinka JT Ceskoslovensky Sach#020"] [Site ""] [Date "2014"] [Round ""] [White "Pervakov=O"] [Black "(=4882.01e5h3)"] [Result "1/2-1/2"] [EventDate "2014"] [SetUp "1"] [PlyCount "27"] [FEN "q3b1N1/3r4/3B2p1/4K1R1/6N1/RB2b2k/2Q5/5r2 b - - 0 1"] 
 {Original game: 739 Ceskoslovensky Sach/3 EG#19922.} 1...Bf4+ $1 2.Kf6 $1 ( 2.Kd4 $2 Rxd6+ 3.Bd5+ Qxa3 4.Qg2+ Kh4 5.Qxf1 Kxg5 ) ( 2. Ke6 $2 Rxd6+ 3.Ke7 Qd8+ 4.Kf8 Bf7+ 5.Kxf7 Rd7+ 6.Ke6 Qe8+ 7.Kf6 Be5# {MATCH} )  2...Qd8+ $1 ( 2...Rxd6+ 3.Be6+ Qxa3 4.Qh2+ $1 Bxh2+ 5.Nf2+ Kh4 6.Rg4+ Kh5 7. Rg5+ Kh4 8.Rg4+ ) ( 2...Bxd6+ 3.Ke6 Re1+ 4.Re5 Rxe5+ 5.Nxe5 Bxa3 6.Qc3+ Kg2 7. Qc2+ Kh1 8.Qb1+ Kh2 9.Qc2+ Qg2 10.Qxg2+ Kxg2 11.Nxd7 ) 3.Ne7 $1 ( 3.Be7 $2 Be5+ $1 4.Kxe5 Qb8+ 5.Ke6 Qb6+ 6.Ke5 Qd4+ 7.Ke6 Bf7# ) 3...Rxd6+ ( 3...Bxd6+ 4.Nf2+  $1 Kh2 ( 4...Rxf2+ 5.Kg7 $1 ) 5.Rg2+ $1 Kxg2 6.Bd5+ Kg1 7.Kg5 $1 Qxe7+ 8.Kg4  Qh4+ $1 9.Kxh4 Rh7+ 10.Kg4 $1 Bd7+ 11.Kg5 Rh5+ 12.Kxg6 Bf5+ 13.Kxh5 Bxc2 14. Nh3+ Kh2 15.Re3 ) 4.Be6+ $1 Kh4 ( 4...Bg3+ 5.Nf2+ $1 Kh2 6.Raxg3 ) 5.Rh3+ $1  Kxh3 6.Qh2+ $1 ( 6.Ne5+ $2 Rxe6+ 7.Kxe6 Bxg5 ) ( 6.Nf2+ $2 Kh2 $1 ) 6...Bxh2+  7.Nf2+ $1 Kh4 8.Rg4+ Kh5 9.Rg5+ Kh6 10.Rxg6+ $1 Kh7 11.Rg7+ Kh8 12.Rg8+ Kh7 13. Rg7+ Kh6 14.Rg6+ Bxg6 1/2-1/2

Daily task - Stalemate

Daily task - White draws

Daily task - White wins.

Daily - Black playes White Wins