MESON Chess Problem Database
Problem Display
PID: 51483 (n2B4/1pq1P1K1/1p1kNQ2/1P1pN3/3p4/3P4/2P1R3/8 w - - 0 1)
Morse, Christopher Jeremy
The Guardian, 1961
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qb8
- 2.e8S#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qxe7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Qc8
- 2.e8S#
- 1...Qb8
- Tries
- 1.Kg6?
- threat
- 2.e8S#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Qd7
- 2.Sf7#
- 1...Qc6!
- threat
- 1.Kh6?
- threat
- 2.e8S#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Qd7
- 2.Sf7#
- 1...Qc6!
- threat
- 1.Kh7?
- 1...Qxe7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Kf8?
- threat
- 2.e8S#
- 1...Qxd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Qxe7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Qd7
- 2.Sf7#
- 1...Qc6!
- threat
- 1.Kg8?
- threat
- 2.e8S#
- 1...Qxd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Qxe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Qd7
- 2.Sf7#
- 1...Qc6!
- threat
- 1.Kh8?
- threat
- 2.e8S#
- 1...Qxd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Qxe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Qd7
- 2.Sf7#
- 1...Qc6!
- threat
- 1.Re1?
- 1...Qxe7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Rd2?
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Rf2?
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Rg2?
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Rh2?
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Qxc2
- 2.e8S#
- 1...Qb8
- 2.e8S#
- 1...Qc3
- 2.e8S#
- 1...Qc4
- 2.e8S#
- 1...Qc5
- 2.Sxd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sf8#
- 2.e8S#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8S#
- 1...Qc6!
- 1...Qxe7+
- 1.Kg6?
- Keys
- 1.Qf8!
- 1...Qxe7+
- 2.Qxe7#
- 1...Kxe6
- 2.Qf6#
- 1...Qxd8
- 2.exd8S#
- 1...Qxc2
- 2.e8Q#
- 2.e8R#
- 1...Qc6
- 2.e8Q#
- 2.e8R#
- 1...Qb8
- 2.e8Q#
- 2.e8R#
- 1...Qc3
- 2.e8Q#
- 2.e8R#
- 1...Qc4
- 2.e8Q#
- 2.e8R#
- 1...Qc5
- 2.e8Q#
- 2.e8R#
- 1...Qd7
- 2.Sf7#
- 1...Qc8
- 2.e8Q#
- 2.e8R#
- 1...Qxe7+
- 1.Qf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(f);N_PINP(H)::P=S
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);SBLOCK::S(E)
- Tries
- Try
- K(I);N_SPINP(H),P-FLIGHT
- Threat
- P=S
- Vars
- Q(f);OGATE,XB(J)::PXQ(f)=Q
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);
- Try
- K(I);N_SPINP(H),S_FLIGHT
- Threat
- P=S
- Vars
- Q(f);OGATE,XB(J)::PXQ(f)=Q
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);
- Try
- K(I);P-FLIGHT
- Vars
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),P_PINP(C),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- K(I);N_SPINP(H),S_FLIGHT
- Threat
- P=S
- Vars
- Q(f);CHECK,OGATE,XB(J)::PXQ(f)=Q
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);
- Try
- K(I);N_SPINP(H),P-FLIGHT
- Threat
- P=S
- Vars
- Q(f);CHECK,OGATE,XB(J)::PXQ(f)=Q
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);
- Try
- K(I);N_SPINP(H),S_FLIGHT
- Threat
- P=S
- Vars
- Q(f);CHECK,OGATE,XB(J)::PXQ(f)=Q
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);
- Try
- R(B);
- Vars
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- R(B);
- Vars
- Q(f);CHECK,OGATE,XP(H)::B(J),XQ(f)
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- R(B);
- Vars
- Q(f);CHECK,OGATE,XP(H)::B(J),XQ(f)
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- R(B);
- Vars
- Q(f);CHECK,OGATE,XP(H)::B(J),XQ(f)
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- R(B);
- Vars
- Q(f);CHECK,OGATE,XP(H)::B(J),XQ(f)
- Q(f);N_PINP(H),XB(J)::PXQ(f)=Q
- Q(f);N_PINP(H),XP(A)::P=S
- Q(f);N_PINP(H)::P=S
- Q(f);SBLOCK::S(E)
- Refutation
- Q(f);N_PINP(H)
- Try
- Actual
- Q(G);
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::QAB1(G),XQ(f)
- K(d);OGATEB,P-FLIGHT,XS(F)::QAR1(G)
- Q(f);N_PINP(H),XB(J)::PXQ(f)=S
- Q(f);N_PINP(H),XP(A)::P=Q
- Q(f);N_PINP(H)::P=Q
- Q(f);SBLOCK::S(E)
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).