MESON Chess Problem Database
Problem Display
PID: 10691 (2B1nQnN/1K3P1r/1p1p1kpp/1R6/4R3/2N3PP/6q1/8 w - - 0 1)
Hassberg, Eric Manfred
20th Place, FIDE Ty., 1967-1970
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Re6#
- 1...Qxe4+
- 2.Sxe4#
- 1...Qg1
- 2.Rf4#
- 2.Re6#
- 1...Qa2
- 2.Rf4#
- 1...Qb2
- 2.Rf4#
- 2.Re6#
- 1...Qc2
- 2.Re6#
- 1...Qd2
- 2.Re6#
- 1...Qe2
- 2.Rf4#
- 1...Qf2
- 2.Re6#
- 1...Qh2
- 2.Rf4#
- 2.Re6#
- 1...Qxg3
- 2.Re6#
- 1...Rxf7+
- 2.Qxf7#
- 1...Rxh8
- 2.fxe8Q#
- 2.fxe8S#
- 2.fxe8B#
- 2.fxe8R#
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Sc7
- 2.fxg8S#
- 1...Sg7
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Se7
- 2.fxe8S#
- 1...g5
- 2.Sd5#
- 2.Rf5#
- 1...Qf1
- Tries
- 1.Kb8?
- threat
- 2.Rf4#
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qxh3
- 2.fxe8S#
- 2.fxg8S#
- 1...Qxe4
- 2.Sxe4#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qxg3
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Rxf7
- 2.Rf4#
- 2.Re6#
- 2.Qxf7#
- 1...Rxh8
- 2.Rf4#
- 2.Re6#
- 2.fxe8Q#
- 2.fxe8S#
- 2.fxe8B#
- 2.fxe8R#
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Qf1
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qf3
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qa2
- 2.Rf4#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qc2
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qd2
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qe2
- 2.Rf4#
- 2.fxe8S#
- 2.fxg8S#
- 1...Qf2
- 2.Re6#
- 2.fxe8S#
- 2.fxg8S#
- 1...Sc7
- 2.Rf4#
- 2.fxg8S#
- 1...Se7
- 2.Re6#
- 2.fxe8S#
- 1...g5
- 2.Sd5#
- 2.Re6#
- 2.Rf5#
- 2.fxe8S#
- 2.fxg8S#
- 1...d5!
- threat
- 1.Bd7?
- threat
- 2.fxe8S#
- 2.fxg8S#
- 1...Qxe4+
- 2.Sxe4#
- 1...Rxf7
- 2.Qxf7#
- 1...Rxh8
- 2.fxe8Q#
- 2.fxe8S#
- 2.fxe8B#
- 2.fxe8R#
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Sc7
- 2.fxg8S#
- 1...Sg7
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Se7
- 2.fxe8S#
- 1...d5!
- threat
- 1.Rd5?
- threat
- 2.Rf4#
- 2.Re6#
- 1...Rxf7+
- 2.Qxf7#
- 1...Qxe4
- 2.Sxe4#
- 1...Qxg3
- 2.Re6#
- 1...Qf1
- 2.Re6#
- 1...Qf3
- 2.Re6#
- 1...Qc2
- 2.Re6#
- 1...Qd2
- 2.Re6#
- 1...Qe2
- 2.Rf4#
- 1...Qf2
- 2.Re6#
- 1...Sc7
- 2.Rf4#
- 2.fxg8S#
- 1...Sg7
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 1...Se7
- 2.Re6#
- 2.fxe8S#
- 1...g5
- 2.Re6#
- 2.Rf5#
- 1...Qxh3!
- threat
- 1.Rh5?
- threat
- 2.Sd5#
- 1...Qxe4+
- 2.Sxe4#
- 1...Rxf7+
- 2.Qxf7#
- 1...Qa2
- 2.Rf4#
- 1...Qd2
- 2.Re6#
- 1...Sc7
- 2.fxg8S#
- 1...Se7
- 2.fxe8S#
- 1...d5
- 2.Sxd5#
- 2.Rf4#
- 2.Re6#
- 1...gxh5!
- threat
- 1.Qe7+?
- 1...Sxe7
- 2.fxe8S#
- 1...Kg7!
- 1...Sxe7
- 1.Kb8?
- Keys
- 1.h4!
- threat
- 2.Sd5#
- 1...Qxe4+
- 2.Sxe4#
- 1...Rxf7+
- 2.Qxf7#
- 1...Qa2
- 2.Rf4#
- 1...Qd2
- 2.Re6#
- 1...Sc7
- 2.fxg8S#
- 1...Se7
- 2.fxe8S#
- 1...d5
- 2.Sxd5#
- threat
- 1.h4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(a);N_PINR(D)::R1(D)
- Q(a);CHECK,XR(D)::S(A),XQ(a)
- Q(a);N_PINR(D)::R(D)
- Q(a);N_PINR(D),XP(B)::R1(D)
- R(g);CHECK,OGATE,P_SPINR(g),XP(G)::QAR1(I),XR(g)
- S(h);N_PINP(G)::PXS(i)=S
- S(i);N_PINP(G)::PXS(h)=S
- Tries
- Try
- K(F);N_SPINP(G),N_SPINR(D),P-FLIGHT
- Threat
- DUALS(4)
- Refutation
- P(c);
- Try
- B(H);N_SPINP(G)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XR(D)::S(A),XQ(a)
- R(g);OGATE,P_PINB(H),P_SPINR(g),XP(G)::QAR1(I),XR(g)
- S(h);::PXS(i)=S
- S(i);::PXS(h)=S
- Refutation
- P(c);N_PINR(D)
- Try
- R(E);N_SPINR(D)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE,P_SPINR(g),XP(G)::QAR1(I),XR(g)
- Q(a);P_PINR(E),XR(D)::S(A),XQ(a)
- Q(a);XP(B)::R1(D)
- Q(a);::R1(D)
- Q(a);::R(D)
- Refutation
- Q(a);XP(C)
- Try
- R(E);
- Threat
- S(A)
- Vars
- Q(a);CHECK,XR(D)::S(A),XQ(a)
- R(g);CHECK,OGATE,P_SPINR(g),XP(G)::QAR1(I),XR(g)
- Q(a);N_PINR(D)::R(D)
- Q(a);N_PINR(D)::R1(D)
- S(h);N_PINP(G)::PXS(i)=S
- S(i);N_PINP(G)::PXS(h)=S
- Refutation
- P(e);XR(E)
- Try
- Q(I);CHECK,N_SPINP(G)
- Vars
- S(i);N_GUARD,S_CUTR(g),XQ(I)::PXS(h)=S
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- P(C);
- Threat
- S(A)
- Vars
- Q(a);CHECK,XR(D)::S(A),XQ(a)
- R(g);CHECK,OGATE,P_SPINR(g),XP(G)::QAR1(I),XR(g)
- Q(a);N_PINR(D)::R(D)
- Q(a);N_PINR(D)::R1(D)
- S(h);N_PINP(G)::PXS(i)=S
- S(i);N_PINP(G)::PXS(h)=S
- P(c);N_PINR(D)::S(A),XP(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).