MESON Chess Problem Database
Problem Display
PID: 189465 (8/qQ6/3pN2K/3pp2R/4k3/7R/1b1B4/8 w - - 0 1)
Heathcote, Godfrey
1st Prize, American Chess Bulletin, 1911
#2
6 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qe3+
- 2.Rxe3#
- 1...Qd4
- 2.Qh7#
- 1...Qc5
- 2.Qh7#
- 1...Qb6
- 2.Qh7#
- 1...Qb8
- 2.Re3#
- 2.Qh7#
- 1...Qa1
- 2.Re3#
- 2.Qh7#
- 1...Qa2
- 2.Re3#
- 2.Qh7#
- 1...Qa3
- 2.Qh7#
- 1...Qa4
- 2.Re3#
- 2.Qh7#
- 1...Qa5
- 2.Re3#
- 2.Qh7#
- 1...Qa6
- 2.Re3#
- 2.Qh7#
- 1...Qxb7
- 2.Re3#
- 1...Qa8
- 2.Re3#
- 2.Qh7#
- 1...Ba1
- 2.Qb1#
- 1...Bc1
- 2.Qb1#
- 1...Ba3
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qb1#
- 1...Qe3+
- Tries
- 1.Sg5+?
- 1...Kd4
- 2.Qb4#
- 1...Kf5!
- 1...Kd4
- 1.Bf4?
- 1...Qxb7
- 2.Re3#
- 1...exf4
- 2.Qxd5#
- 1...Qe3
- 2.Rxe3#
- 2.Qh7#
- 1...Qf2
- 2.Qh7#
- 1...Qd4
- 2.Qh7#
- 1...Qc5
- 2.Qh7#
- 1...Qb6
- 2.Qh7#
- 1...Qb8
- 2.Re3#
- 2.Qh7#
- 1...Qa1
- 2.Re3#
- 2.Qh7#
- 1...Qa2
- 2.Re3#
- 2.Qh7#
- 1...Qa3
- 2.Qh7#
- 1...Qa4
- 2.Re3#
- 2.Qh7#
- 1...Qa5
- 2.Re3#
- 2.Qh7#
- 1...Qa6
- 2.Re3#
- 2.Qh7#
- 1...Qa8
- 2.Re3#
- 2.Qh7#
- 1...Ba1
- 2.Qb1#
- 1...Bc1
- 2.Qb1#
- 1...Ba3
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qb1#
- 1...Qg1!
- 1...Qxb7
- 1.Rg3?
- 1...Qe3+
- 2.Rxe3#
- 1...Qxb7
- 2.Re3#
- 1...Qg1
- 2.Qh7#
- 1...Qd4
- 2.Qh7#
- 1...Qc5
- 2.Qh7#
- 1...Qb6
- 2.Qh7#
- 1...Qb8
- 2.Re3#
- 2.Qh7#
- 1...Qa1
- 2.Re3#
- 2.Qh7#
- 1...Qa2
- 2.Re3#
- 2.Qh7#
- 1...Qa3
- 2.Qh7#
- 1...Qa4
- 2.Re3#
- 2.Qh7#
- 1...Qa5
- 2.Re3#
- 2.Qh7#
- 1...Qa6
- 2.Re3#
- 2.Qh7#
- 1...Qa8
- 2.Re3#
- 2.Qh7#
- 1...Ba1
- 2.Qb1#
- 1...Bc1
- 2.Qb1#
- 1...Ba3
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qb1#
- 1...Qf2!
- 1...Qe3+
- 1.Rg5?
- 1...Qxb7
- 2.Re3#
- 1...Qe3
- 2.Rxe3#
- 2.Qh7#
- 1...Qg1
- 2.Qh7#
- 1...Qd4
- 2.Qh7#
- 1...Qc5
- 2.Qh7#
- 1...Qb6
- 2.Qh7#
- 1...Qb8
- 2.Re3#
- 2.Qh7#
- 1...Qa1
- 2.Re3#
- 2.Qh7#
- 1...Qa2
- 2.Re3#
- 2.Qh7#
- 1...Qa3
- 2.Qh7#
- 1...Qa4
- 2.Re3#
- 2.Qh7#
- 1...Qa5
- 2.Re3#
- 2.Qh7#
- 1...Qa6
- 2.Re3#
- 2.Qh7#
- 1...Qa8
- 2.Re3#
- 2.Qh7#
- 1...Ba1
- 2.Qb1#
- 1...Bc1
- 2.Qb1#
- 1...Ba3
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qb1#
- 1...Qf2!
- 1...Qxb7
- 1.Qb4+?
- 1...Qd4
- 2.Re3#
- 1...Bd4
- 2.Re3#
- 2.Qb1#
- 1...d4!
- 1...Qd4
- 1.Qxa7?
- threat
- 2.Re3#
- 2.Qe3#
- 2.Qh7#
- 1...Bd4
- 2.Qh7#
- 1...d4!
- threat
- 1.Qf7?
- threat
- 2.R5h4#
- 2.Qg6#
- 2.Qf3#
- 2.Qf5#
- 1...Qe3+
- 2.Rxe3#
- 1...Qxf7
- 2.Re3#
- 1...d4
- 2.Sg5#
- 2.Qf3#
- 1...Qg1
- 2.Qf3#
- 2.Qf5#
- 1...Qa3
- 2.R5h4#
- 2.Qg6#
- 2.Qf5#
- 2.Qh7#
- 1...Qe7
- 2.Re3#
- 2.Qg6#
- 2.Qf3#
- 2.Qf5#
- 1...Qf2!
- threat
- 1.Sg5+?
- Keys
- 1.Sd4!
- threat
- 2.R5h4#
- 1...Kxd4
- 2.Qb4#
- 1...Qxd4
- 2.Qh7#
- 1...Bxd4
- 2.Qb1#
- 1...exd4
- 2.Qxd5#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(f);CHECK,N_GUARD::R1(B),XQ(f)
- Q(f);N_GUARD::QAB(F)
- Q(f);N_GUARD,N_SPINP(c),XQ(F)::R1(B)
- B(a);OGATE::QAB(F)
- B(a);OGATE,P_PINB(A)::QAB(F)
- Tries
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINP(c),P-FLIGHT::QAR2(F)
- Refutation
- K(b);N_SPINP(c),S_FLIGHT
- Try
- B(A);
- Vars
- Q(f);N_GUARD,N_SPINP(c),XQ(F)::R1(B)
- P(d);XB(A)::QAB1(F),XP(c)
- Q(f);N_GUARD::QAB(F)
- B(a);OGATE::QAB(F)
- B(a);OGATE,P_PINB(A)::QAB(F)
- Refutation
- Q(f);
- Try
- R(B);
- Vars
- Q(f);CHECK,N_GUARD::R1(B),XQ(f)
- Q(f);N_GUARD,N_SPINP(c),XQ(F)::R1(B)
- Q(f);N_GUARD::QAB(F)
- B(a);OGATE::QAB(F)
- B(a);OGATE,P_PINB(A)::QAB(F)
- Refutation
- Q(f);
- Try
- R(C);
- Vars
- Q(f);N_GUARD,N_SPINP(c),XQ(F)::R1(B)
- Q(f);N_GUARD::QAB(F)
- B(a);OGATE::QAB(F)
- Refutation
- Q(f);
- Try
- Q(F);CHECK,N_PINP(c)
- Vars
- Q(f);P_SPINQ(f)::R1(B)
- Refutation
- P(c);P_SPINP(c)
- Try
- Q(F);N_PINP(c),XQ(f)
- Threat
- DUALS(3)
- Vars
- B(a);::QAB(F)
- Refutation
- P(c);
- Try
- Q(F);N_PINP(c)
- Threat
- DUALS(4)
- Vars
- Q(f);CHECK,N_GUARD::R1(B),XQ(f)
- Q(f);N_GUARD,XQ(F)::R1(B)
- Refutation
- Q(f);
- Try
- Actual
- S(D);
- Threat
- R(C)
- Vars
- K(b);N_SPINP(c),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
- Q(f);N_GUARD,SBLOCK,XS(D)::QAB(F)
- B(a);OGATE,SBLOCK,XS(D)::QAB(F)
- P(d);XS(D)::QAB1(F),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).