MESON Chess Problem Database
Problem Display
PID: 67614 (BBn1Rb2/2rP3K/3kPp2/5Q2/3P2RN/2N5/b4n2/1q6 w - - 0 1)
Gordian, Yury Markovic
Melnichenko, Viktor Oleksandrovich
HM., Stella Polaris, 1968
#2
11 + 8
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sb5#
- 1...Qe4
- 2.Sb5#
- 1...Qxf5+
- 2.Sxf5#
- 1...Qa1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 1...Qd1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 1...Qe1
- 2.Sb5#
- 2.Qc5#
- 1...Qf1
- 2.Qf4#
- 2.Qc5#
- 1...Qg1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 1...Qh1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 1...Qb2
- 2.Qf4#
- 2.Qc5#
- 1...Qb3
- 2.Qf4#
- 2.Qc5#
- 1...Qb4
- 2.Qf4#
- 1...Qb5
- 2.Sxb5#
- 1...Qb6
- 2.Qf4#
- 1...Qb7
- 2.Qc5#
- 1...Qxb8
- 2.Qf4#
- 1...Bb3
- 2.Sb5#
- 1...Be7
- 2.dxc8S#
- 1...Bg7
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sd3
- 2.Se4#
- 1...Se4
- 2.Qf4#
- 1...Se7
- 2.d8Q#
- 2.d8R#
- 1...Qc2
- Tries
- 1.Kg8?
- threat
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bxe6+
- 2.Qxe6#
- 1...Qxb8
- 2.Qf4#
- 1...Sxg4
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb7
- 2.Qc5#
- 1...Qc2
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qd3
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe4
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qa1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qd1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qf1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qg1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qh1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb2
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb3
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb5
- 2.Sxb5#
- 2.dxc8S#
- 1...Qb6
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bb3
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bc4
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.Qf4#
- 2.Qxd5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bh6
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Be7
- 2.dxc8S#
- 1...Bg7
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sd1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Se4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sb6
- 2.Qf4#
- 2.Qc5#
- 1...Sa7
- 2.Qf4#
- 2.Qc5#
- 2.d8Q#
- 2.d8R#
- 1...Se7+!
- threat
- 1.Kh8?
- threat
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qxb8
- 2.Qf4#
- 1...Bxe6
- 2.Qxe6#
- 1...Sxg4
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb7
- 2.Qc5#
- 1...Qc2
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qd3
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe4
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qa1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qd1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qf1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qg1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qh1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb2
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb3
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb5
- 2.Sxb5#
- 2.dxc8S#
- 1...Qb6
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bb3
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bc4
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.Qf4#
- 2.Qxd5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bh6
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Be7
- 2.dxc8S#
- 1...Sd1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Se4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sb6
- 2.Qf4#
- 2.Qc5#
- 1...Sa7
- 2.Qf4#
- 2.Qc5#
- 2.d8Q#
- 2.d8R#
- 1...Se7
- 2.d8Q#
- 2.d8R#
- 1...Bg7+!
- threat
- 1.Se4+?
- 1...Sxe4
- 2.Qf4#
- 1...Qxe4!
- 1...Sxe4
- 1.Re4?
- threat
- 2.Qf4#
- 2.Qc5#
- 1...Qxe4
- 2.Sb5#
- 1...Qxb8
- 2.Qf4#
- 1...Bxe6
- 2.Qxe6#
- 1...Sxe4
- 2.Qf4#
- 1...Qb7
- 2.Qc5#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 1...Qb4
- 2.Qf4#
- 1...Qb5
- 2.Sxb5#
- 1...Qb6
- 2.Qf4#
- 1...Bd5
- 2.Qf4#
- 2.Qxd5#
- 1...Bh6
- 2.Qc5#
- 1...Sh3
- 2.Qc5#
- 1...Sg4
- 2.Qc5#
- 1...Sd3!
- threat
- 1.Rg7?
- threat
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qxf5+
- 2.Sxf5#
- 1...Qxb8
- 2.Qf4#
- 1...Bxe6
- 2.Rxe6#
- 1...Bxg7
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb7
- 2.Qc5#
- 1...Qd3
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qc2
- 2.Sb5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe4
- 2.Sb5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qa1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qd1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qe1
- 2.Sb5#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qf1
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qg1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qh1
- 2.Sb5#
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb2
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb3
- 2.Qf4#
- 2.Qc5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Qb5
- 2.Sxb5#
- 2.dxc8S#
- 1...Qb6
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bb3
- 2.Sb5#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bc4
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Be7
- 2.dxc8S#
- 1...Sd1
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh1
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sd3
- 2.Se4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Se4
- 2.Qf4#
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sg4
- 2.dxc8S#
- 2.d8Q#
- 2.d8R#
- 1...Sa7
- 2.d8Q#
- 2.d8R#
- 1...Se7
- 2.d8Q#
- 2.d8R#
- 1...Sb6!
- threat
- 1.Kg8?
- Keys
- 1.Rg6!
- threat
- 2.Qf4#
- 2.Qc5#
- 1...Qxf5
- 2.Sxf5#
- 1...Qxb8
- 2.Qf4#
- 1...Bxe6
- 2.Qxe6#
- 1...Qb7
- 2.Qc5#
- 1...Qe4
- 2.Sb5#
- 2.Qc5#
- 1...Qc1
- 2.Sb5#
- 2.Qc5#
- 1...Qe1
- 2.Sb5#
- 2.Qc5#
- 1...Qb4
- 2.Qf4#
- 1...Qb5
- 2.Sxb5#
- 1...Qb6
- 2.Qf4#
- 1...Bd5
- 2.Qf4#
- 2.Qxd5#
- 1...Bh6
- 2.Qc5#
- 1...Be7
- 2.dxc8S#
- 1...Sd3
- 2.Se4#
- 1...Sh3
- 2.Qc5#
- 1...Se4
- 2.Qf4#
- 1...Sg4
- 2.Qc5#
- 1...Se7
- 2.d8Q#
- 2.d8R#
- threat
- 1.Rg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::S(A)
- Q(a);CHECK,XQ(E)::S(D),XQ(a)
- Q(a);N_PINQ(E)::QAB(E)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- Q(a);N_PINQ(E)::QAB1(E)
- Q(a);N_PINQ(E),N_SPINR(f),XB(J)::QAB(E)
- B(b);S_CUTQ(a)::S(A)
- B(h);N_PINP(G)::PXS(g)=S
- S(c);N_GUARD,N_PINQ(E),S_CUTQ(a)::S(A)
- S(c);N_PINQ(E)::QAB(E)
- S(g);N_PINP(G)::P=Q
- Tries
- Try
- K(H);N_SPINP(G),N_SPINQ(E),P_SPINP(F),S_FLIGHT
- Threat
- DUALS(5)
- Vars
- B(b);CHECK,OGATE,XP(F)::QAR1(E),XB(b)
- Q(a);N_SPINR(f),XB(J)::QAB(E)
- Q(a);::QAB1(E)
- B(h);::PXS(g)=S
- Refutation
- S(g);CHECK
- Try
- K(H);N_SPINP(G),N_SPINQ(E),P-FLIGHT
- Threat
- DUALS(5)
- Vars
- Q(a);N_SPINR(f),XB(J)::QAB(E)
- B(b);OGATE,XP(F)::QAR1(E),XB(b)
- Q(a);::QAB1(E)
- B(h);::PXS(g)=S
- S(g);::P=Q
- Refutation
- B(h);CHECK
- Try
- S(A);CHECK,N_SPINQ(E)
- Vars
- S(c);XS(A)::QAB(E)
- Refutation
- Q(a);P_PINQ(E),XS(A)
- Try
- R(C);N_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_PINQ(E),XR(C)::S(A)
- Q(a);N_SPINR(f),XB(J)::QAB(E)
- B(b);OGATE,XP(F)::QAR1(E),XB(b)
- S(c);XR(C)::QAB(E)
- Q(a);::QAB1(E)
- Q(a);::QAB(E)
- Q(a);N_GUARD::S(A),XQ(a)
- B(h);::QAB1(E)
- S(c);::QAB1(E)
- Refutation
- S(c);
- Try
- R(C);N_SPINP(G)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,XQ(E)::S(D),XQ(a)
- Q(a);N_PINQ(E),N_SPINR(f),XB(J)::QAB(E)
- B(b);OGATE,XP(F)::R1(K),XB(b)
- Q(a);N_PINQ(E)::QAB1(E)
- B(h);::PXS(g)=S
- S(g);::P=Q
- Refutation
- S(g);
- Try
- Actual
- R(C);N_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- Q(a);P_PINR(C),XQ(E)::S(D),XQ(a)
- Q(a);N_SPINR(f),XB(J)::QAB(E)
- B(b);OGATE,XP(F)::QAR1(E),XB(b)
- Q(a);::QAB1(E)
- Q(a);::QAB(E)
- Q(a);N_GUARD::S(A),XQ(a)
- B(h);::QAB1(E)
- B(h);N_PINP(G)::PXS(g)=S
- S(c);N_GUARD,S_CUTQ(a)::S(A)
- S(c);::QAB1(E)
- S(c);::QAB(E)
- S(g);N_PINP(G)::P=Q
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).