MESON Chess Problem Database
Problem Display
PID: 15253 (6B1/2KP4/P1N5/p1kN1n2/P6R/3p4/2q2n2/Q1R1b3 w - - 0 1)
Petkov, Petko Andonov
Sp. Prize, Shakhmatna misl, 1981
#2
10 + 7
| 3840 | Petkov Selected Compositions | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Qa3#
- 1...Qc4
- 2.Rcxc4#
- 2.Rhxc4#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sxh4
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...d2
- 2.Rxc2#
- 2.Qa3#
- 1...Qc3
- Tries
- 1.Sc3?
- threat
- 2.Rc4#
- 2.Qa3#
- 1...Qxc1
- 2.Rc4#
- 1...Qxc3
- 2.Qa3#
- 1...Bxc3
- 2.Rc4#
- 1...Sxh4
- 2.Qa3#
- 1...Qb1
- 2.Se4#
- 2.Rc4#
- 1...Qb3
- 2.Se4#
- 1...Qa2
- 2.Se4#
- 1...Qb2
- 2.Se4#
- 2.Rc4#
- 1...Se4
- 2.Sxe4#
- 2.Qa3#
- 1...Sg4
- 2.Se4#
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Sd4
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Qxa4!
- threat
- 1.Se3?
- threat
- 2.Qe5#
- 1...Sxe3
- 2.Qd4#
- 1...Qc3
- 2.Qa3#
- 1...Bc3
- 2.Rc4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- 1...Sg4!
- threat
- 1.Sdb4?
- threat
- 2.Qe5#
- 1...Bc3
- 2.Rc4#
- 1...Sg4
- 2.Sxd3#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- 1...Qc3!
- threat
- 1.Sf4?
- threat
- 2.Qe5#
- 1...Qc3
- 2.Qa3#
- 1...Sg4
- 2.Sxd3#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- 1...Bc3!
- threat
- 1.Sb6?
- threat
- 2.Qe5#
- 1...Qc3
- 2.Qa3#
- 1...Bc3
- 2.Rc4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- 1...Sg4!
- threat
- 1.Sde7?
- threat
- 2.Qe5#
- 1...Sxe7
- 2.Qd4#
- 1...Qc3
- 2.Qa3#
- 1...Bc3
- 2.Rc4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sg4!
- threat
- 1.Rxc2+?
- 1...Bc3
- 2.Rxc3#
- 2.Qxc3#
- 2.Qa3#
- 1...dxc2!
- 1...Bc3
- 1.Qb2?
- threat
- 2.Qb5#
- 2.Qb6#
- 1...Sxh4
- 2.Qd4#
- 2.Qb5#
- 1...Se4
- 2.Qb5#
- 1...Sg4
- 2.Qb5#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 2.Qb6#
- 1...Bb4!
- threat
- 1.Qe5?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sdb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sde7#
- 1...Qc3
- 2.Sxc3#
- 2.Se3#
- 2.Sdb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sde7#
- 1...Qc4
- 2.Se3#
- 2.Sdb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sde7#
- 2.Rcxc4#
- 2.Rhxc4#
- 1...Bc3
- 2.Sxc3#
- 1...Bb4
- 2.Sc3#
- 2.Se3#
- 2.Sdxb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sde7#
- 1...Se3
- 2.Sxe3#
- 2.Qd4#
- 2.Qd6#
- 2.Qxe3#
- 2.Qe7#
- 1...Se7
- 2.Sdxe7#
- 2.Qd4#
- 2.Qd6#
- 2.Qe3#
- 2.Qxe7#
- 1...Sg4!
- threat
- 1.Sc3?
- Keys
- 1.Sf6!
- threat
- 2.Qe5#
- 1...Sg4
- 2.Se4#
- 1...Qc3
- 2.Qa3#
- 1...Bc3
- 2.Rc4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- threat
- 1.Sf6!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(b);S_CUTB(a)::QAB(A)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD,XR(D)::QAB1(A)
- Tries
- Try
- S(E);N_PINQ(b)
- Threat
- DUALS(2)
- Vars
- Q(b);XR(B)::R1(D)
- Q(b);P_SPINQ(b),XS(E)::QAB(A)
- B(a);XS(E)::R1(D)
- S(g);XR(D)::QAB(A)
- Q(b);::R(B)+S(E),DCHECK
- S(g);::QAB(A)
- Refutation
- Q(b);XP(C)
- Try
- S(E);
- Threat
- QAR2(A)
- Vars
- S(g);N_GUARD,XS(E)::QAB1(A)
- Q(b);S_CUTB(a)::QAB(A)
- B(a);N_SPINQ(b),S_CUTQ(b)::R1(D)
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD::QAB1(A)
- Refutation
- S(c);
- Try
- S(E);
- Threat
- QAR2(A)
- Vars
- B(a);N_SPINQ(b),S_CUTQ(b)::R1(D)
- S(c);N_GUARD::S(E),XP(d)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- Refutation
- Q(b);
- Try
- S(E);
- Threat
- QAR2(A)
- Vars
- Q(b);S_CUTB(a)::QAB(A)
- S(c);N_GUARD::S(E),XP(d)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- Refutation
- B(a);N_SPINQ(b)
- Try
- S(E);
- Threat
- QAR2(A)
- Vars
- Q(b);S_CUTB(a)::QAB(A)
- B(a);N_SPINQ(b),S_CUTQ(b)::R1(D)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- Refutation
- S(c);
- Try
- S(E);
- Threat
- QAR2(A)
- Vars
- S(g);N_GUARD,XS(E)::QAB1(A)
- Q(b);S_CUTB(a)::QAB(A)
- B(a);N_SPINQ(b),S_CUTQ(b)::R1(D)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- Refutation
- S(c);
- Try
- R(B);CHECK,XQ(b)
- Refutation
- P(d);XR(B)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(c);::QAR1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- Refutation
- B(a);
- Try
- Q(A);
- Threat
- DUALS(7)
- Vars
- B(a);N_SPINQ(b)::QAR(A)+S(E),XB(a)
- Refutation
- S(c);
- Try
- Actual
- S(E);
- Threat
- QAR2(A)
- Vars
- S(c);N_GUARD::S(E)
- Q(b);S_CUTB(a)::QAB(A)
- B(a);N_SPINQ(b),S_CUTQ(b)::R1(D)
- S(g);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
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).