MESON Chess Problem Database
Problem Display
PID: 71116 (2K5/8/1N6/kpn1Q3/PN6/2P5/8/8 w - - 0 1)
Harley, Brian
Magyar Sakkvilag, 1947
#2
6 + 3
SOLUTION
- SOUND
- Sets
- 1...Kxb6
- 2.Qc7#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Sxa4
- 2.Sc4#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sb7
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...bxa4
- 2.Qxc5#
- 1...Kxb6
- Tries
- 1.Qc7?
- 1...Sxa4
- 2.Sc4#
- 2.Qa7#
- 1...bxa4
- 2.Qxc5#
- 1...Sb3
- 2.Qa7#
- 1...Sd3
- 2.Qa7#
- 1...Se4
- 2.Qa7#
- 1...Sa6
- 2.Sc6#
- 1...Se6
- 2.Qa7#
- 1...Sd7
- 2.Qa7#
- 1...Sb7!
- 1...Sxa4
- 1.Qd5?
- 1...Sxa4
- 2.Sc4#
- 1...bxa4
- 2.Qxc5#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sb7
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...Kxb6!
- 1...Sxa4
- 1.Qf5?
- 1...Sxa4
- 2.Sc4#
- 1...bxa4
- 2.Qxc5#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sb7
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...Kxb6!
- 1...Sxa4
- 1.Qg5?
- 1...Sxa4
- 2.Sc4#
- 1...bxa4
- 2.Qxc5#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sb7
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...Kxb6!
- 1...Sxa4
- 1.Qh5?
- 1...Sxa4
- 2.Sc4#
- 1...bxa4
- 2.Qxc5#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sb7
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...Kxb6!
- 1...Sxa4
- 1.c4?
- 1...Kxb6
- 2.Qc7#
- 1...Sxa4
- 2.Qxb5#
- 1...bxa4
- 2.Qxc5#
- 1...bxc4
- 2.Qxc5#
- 1...Sb7
- 2.Qxb5#
- 1...Sb3
- 2.Qxb5#
- 1...Sd3
- 2.Qxb5#
- 1...Se4
- 2.Qxb5#
- 1...Sa6
- 2.Qxb5#
- 1...Se6
- 2.Qxb5#
- 1...Sd7
- 2.Qxb5#
- 1...Kxb4!
- 1...Kxb6
- 1.Qc7?
- Keys
- 1.Qb8!
- 1...Sxa4
- 2.Qa7#
- 1...bxa4
- 2.Sc4#
- 1...Sb7
- 2.Qa7#
- 1...Sb3
- 2.Qa7#
- 1...Sd3
- 2.Qa7#
- 1...Se4
- 2.Qa7#
- 1...Sa6
- 2.Sc6#
- 1...Se6
- 2.Qa7#
- 1...Sd7
- 2.Qa7#
- 1...Sxa4
- 1.Qb8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(D)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- S(c);P_SPINP(b),SBLOCK,XP(B)::S(E)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- Tries
- Try
- Q(D);
- Vars
- P(b);OGATEB,XP(B)::QAR2(D),XS(c)
- S(c);N_GUARD::QAR2(D)
- S(c);SBLOCK::S(C)
- Refutation
- S(c);
- Try
- Q(D);
- Vars
- S(c);P_SPINP(b),SBLOCK,XP(B)::S(E)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- Refutation
- K(a);S_FLIGHT,XS(E)
- Try
- Q(D);
- Vars
- S(c);P_SPINP(b),SBLOCK,XP(B)::S(E)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- Refutation
- K(a);S_FLIGHT,XS(E)
- Try
- Q(D);
- Vars
- S(c);P_SPINP(b),SBLOCK,XP(B)::S(E)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- Refutation
- K(a);S_FLIGHT,XS(E)
- Try
- Q(D);
- Vars
- S(c);P_SPINP(b),SBLOCK,XP(B)::S(E)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- Refutation
- K(a);S_FLIGHT,XS(E)
- Try
- P(A);
- Vars
- K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(D)
- S(c);OGATE,P_SPINP(b),XP(B)::QAR1(D),XP(b)
- P(b);OGATEB,P_SPINS(c),XP(B)::QAR2(D),XS(c)
- P(b);OGATEB,P_SPINS(c),XP(A)::QAR2(D),XS(c)
- S(c);OGATE,P_SPINP(b)::QAR1(D),XP(b)
- Refutation
- K(a);S_FLIGHT,XS(C)
- Try
- Actual
- Q(D);
- Vars
- S(c);N_GUARD,XP(B)::QAR2(D)
- P(b);N_GUARD,SBLOCK,XP(B)::S(E)
- S(c);N_GUARD::QAR2(D)
- S(c);SBLOCK::S(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).