MESON Chess Problem Database
Problem Display
PID: 274006 (2R5/5nKN/1p3R2/b2k4/BP4Q1/N1q5/7B/8 w - - 0 1)
Jovanovic, D
Mat, 1972
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bb3#
- 2.Bc6#
- 2.Qc4#
- 1...Qe1
- 2.Bb3#
- 2.Bc6#
- 2.Qc4#
- 1...Qb2
- 2.Bc6#
- 2.Qc4#
- 1...Qd2
- 2.Bb3#
- 2.Bc6#
- 2.Qc4#
- 1...Qd4
- 2.Bc6#
- 2.Qe6#
- 1...Qe5
- 2.Bb3#
- 2.Bc6#
- 2.Qc4#
- 1...Qxf6+
- 2.Sxf6#
- 1...Qxa3
- 2.Bc6#
- 2.Qc4#
- 1...Qb3
- 2.Bxb3#
- 2.Bc6#
- 1...Qd3
- 2.Bc6#
- 1...Qe3
- 2.Bc6#
- 2.Qc4#
- 1...Qf3
- 2.Bc6#
- 2.Qc4#
- 1...Qh3
- 2.Bc6#
- 2.Qc4#
- 1...Qc4
- 2.Qxc4#
- 1...Qc6
- 2.Bxc6#
- 1...Sg5
- 2.Rd8#
- 1...Sh6
- 2.Rd8#
- 1...Sd8
- 2.Rxd8#
- 1...Sh8
- 2.Rd8#
- 1...Qa1
- Tries
- 1.Sb5?
- threat
- 2.Sxc3#
- 2.Qe6#
- 1...Qxf6+
- 2.Sxf6#
- 1...Qxb4
- 2.Qe6#
- 1...Qxc8
- 2.Qd4#
- 1...Bxb4
- 2.Qe6#
- 1...Qa1
- 2.Sc7#
- 2.Bb3#
- 2.Qf3#
- 2.Qe6#
- 2.Qg2#
- 2.Qc4#
- 1...Qe1
- 2.Sc7#
- 2.Bb3#
- 2.Qc4#
- 2.Qd4#
- 1...Qb2
- 2.Sc7#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 1...Qd2
- 2.Sc7#
- 2.Bb3#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 1...Qd4
- 2.Qe6#
- 2.Qxd4#
- 1...Qe5
- 2.Bb3#
- 2.Qc4#
- 1...Qc1
- 2.Qf3#
- 2.Qe6#
- 2.Qg2#
- 2.Qd4#
- 1...Qc2
- 2.Qe6#
- 2.Qd4#
- 1...Qa3
- 2.Sc7#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qb3
- 2.Sc7#
- 2.Bxb3#
- 2.Qe6#
- 2.Qd4#
- 1...Qd3
- 2.Sc7#
- 2.Qe6#
- 1...Qe3
- 2.Sc7#
- 2.Qc4#
- 1...Qf3
- 2.Sc7#
- 2.Qxf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qh3
- 2.Sc7#
- 2.Qc4#
- 2.Qd4#
- 1...Qc4
- 2.Qe6#
- 2.Qxc4#
- 1...Qc5
- 2.Qe6#
- 1...Qc6
- 2.Qd4#
- 1...Qc7
- 2.Sxc7#
- 2.Qe6#
- 2.Qd4#
- 1...Se5
- 2.Sxc3#
- 2.Rd6#
- 1...Sg5
- 2.Sxc3#
- 2.Rd8#
- 1...Sd8
- 2.Sxc3#
- 2.Rxd8#
- 1...Qg3!
- threat
- 1.Bb3+?
- 1...Qc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Qxb3!
- 1...Qc4
- 1.Rxc3?
- threat
- 2.Bb3#
- 2.Bc6#
- 2.Rd3#
- 2.Qc4#
- 1...Bxb4
- 2.Bb3#
- 2.Bc6#
- 2.Qc4#
- 1...Sd6
- 2.Bc6#
- 2.Rd3#
- 2.Rxd6#
- 1...Sd8
- 2.Bb3#
- 2.Rd3#
- 2.Rd6#
- 2.Qc4#
- 1...b5
- 2.Bb3#
- 2.Rd3#
- 2.Rc5#
- 1...Se5!
- threat
- 1.Rc4?
- threat
- 2.Bc6#
- 2.Qe6#
- 2.Qe4#
- 1...Qxf6+
- 2.Sxf6#
- 1...Qxc4
- 2.Qxc4#
- 1...Qe1
- 2.Bc6#
- 2.Rd4#
- 2.Qd4#
- 1...Qd4
- 2.Bc6#
- 2.Rxd4#
- 2.Qe6#
- 2.Qxd4#
- 1...Qe5
- 2.Bc6#
- 1...Qc2
- 2.Bc6#
- 2.Rd4#
- 2.Qe6#
- 2.Qd4#
- 1...Qd3
- 2.Bc6#
- 2.Qe6#
- 1...Qe3
- 2.Bc6#
- 1...Qf3
- 2.Bc6#
- 2.Rd4#
- 2.Qxf3#
- 2.Qe6#
- 2.Qd4#
- 1...Qh3
- 2.Bc6#
- 2.Rd4#
- 2.Qd4#
- 2.Qe4#
- 1...Se5
- 2.Qe6#
- 2.Qe4#
- 1...Sg5
- 2.Bc6#
- 2.Qd7#
- 1...Sd6
- 2.Bc6#
- 2.Qe6#
- 1...Sd8
- 2.Qd7#
- 2.Qe4#
- 1...b5
- 2.Qe6#
- 2.Qe4#
- 1...Qg3!
- threat
- 1.Rc5+?
- 1...bxc5
- 2.Bc6#
- 1...Qxc5!
- 1...bxc5
- 1.Rd8+?
- 1...Sd6
- 2.Rxd6#
- 1...Sxd8!
- 1...Sd6
- 1.Qf3+?
- 1...Kd4
- 2.Sb5#
- 1...Qxf3!
- 1...Kd4
- 1.Qd4+?
- 1...Qxd4
- 2.Bc6#
- 1...Kxd4!
- 1...Qxd4
- 1.Sb5?
- Keys
- 1.Sc4!
- threat
- 2.Bc6#
- 1...Qxf6+
- 2.Sxf6#
- 1...Qxb4
- 2.Se3#
- 1...Qxc4
- 2.Qxc4#
- 1...Bxb4
- 2.Sxb6#
- 1...Qd4
- 2.Qe6#
- 1...Se5
- 2.Rd6#
- 1...Sd8
- 2.Rxd8#
- 1...b5
- 2.Rc5#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- Q(a);CHECK,XR(F)::S(H),XQ(a)
- Q(a);N_GUARD,N_PINR(F)::B(C)
- Q(a);N_GUARD,N_PINR(F)::QAB1(E),XQ(a)
- Q(a);N_GUARD,N_PINR(F)::B(C),XQ(a)
- S(e);N_GUARD::R(I)
- S(e);N_GUARD::R(I),XS(e)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XR(F)::S(H),XQ(a)
- Q(a);N_PINR(F),XP(D)::QAB1(E)
- Q(a);N_GUARD,N_PINR(F),XR(I)::QAR1(E)
- B(b);XP(D)::QAB1(E)
- Q(a);N_PINR(F)::QAB1(E)
- Q(a);N_GUARD,N_PINR(F)::QAR1(E)
- Refutation
- Q(a);N_PINR(F),P_PINQ(E)
- Try
- B(C);CHECK
- Refutation
- Q(a);N_PINR(F),XB(C)
- Try
- R(I);N_SPINR(F),XQ(a)
- Threat
- DUALS(4)
- Refutation
- S(e);
- Try
- R(I);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,XR(F)::S(H),XQ(a)
- Q(a);N_PINR(F),OGATE,XR(I)::QAB1(E),XQ(a)
- Q(a);::B(C)
- Q(a);N_PINR(F)::B(C)
- Refutation
- Q(a);N_PINR(F),P_PINQ(E)
- Try
- R(I);CHECK
- Vars
- P(d);XR(I)::B(C)
- Refutation
- Q(a);N_PINR(F),XR(I)
- Try
- R(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::R1(I),XS(e)
- Refutation
- S(e);XR(I)
- Try
- Q(E);CHECK
- Vars
- K(c);N_PINR(F),P-FLIGHT,S_CUTQ(a)::S(B)
- Refutation
- Q(a);N_PINR(F),XQ(E)
- Try
- Q(E);CHECK,N_SPINR(F)
- Vars
- Q(a);P_PINR(F),SBLOCK,XQ(E)::B(C)
- Refutation
- K(c);P-FLIGHT,XQ(E)
- Try
- Actual
- S(B);
- Threat
- B(C)
- Vars
- Q(a);CHECK,XR(F)::S(H),XQ(a)
- Q(a);N_GUARD,N_PINR(F),XP(D)::S(B)
- Q(a);N_PINR(F),OGATE,XS(B)::QAB1(E),XQ(a)
- B(b);N_GUARD,XP(D)::S(B),XP(d)
- Q(a);SBLOCK::QAB1(E)
- S(e);N_PINR(F)::R1(F)
- S(e);N_GUARD::R(I),XS(e)
- P(d);N_GUARD::R1(I)
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).