MESON Chess Problem Database
Problem Display
PID: 133649 (2bNrb1B/R1P1kpr1/1Q2p1p1/p5P1/B5N1/3n2K1/8/8 w - - 0 1)
Robertson, Rev Nevill
The Field, 1961
(First published on Thu Oct 26 1961)
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Rh7
- 2.Bf6#
- 1...Rg8
- 2.Bf6#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Rh7
- Tries
- 1.Kh2?
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rg8
- 2.Bf6#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Rh7+!
- 1...Rxd8
- 1.Kh4?
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rg8
- 2.Bf6#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Rh7+!
- 1...Rxd8
- 1.Sc6+?
- 1...Kd6
- 2.Qd4#
- 1...Kd7!
- 1...Kd6
- 1.Bb5?
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...f5
- 2.gxf5 ep#
- 1...Rh7
- 2.Bf6#
- 1...Rg8
- 2.Bf6#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f6
- 2.gxf6#
- 1...a4!
- 1...Rxd8
- 1.Bxg7?
- threat
- 2.Bf6#
- 1...f6
- 2.Bxf6#
- 2.gxf6#
- 1...Bxg7!
- threat
- 1.Ra6?
- threat
- 2.Qd6#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Bxa6!
- threat
- 1.Rb7?
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...f5
- 2.gxf5 ep#
- 1...Rh7
- 2.Bf6#
- 1...Rg8
- 2.Bf6#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f6
- 2.gxf6#
- 1...Bxb7!
- 1...Rxd8
- 1.Qd4?
- threat
- 2.Sc6#
- 1...Rxd8
- 2.Qxd8#
- 2.cxd8Q#
- 2.cxd8B#
- 1...f5
- 2.gxf5 ep#
- 1...Bb7
- 2.Qd7#
- 2.c8S#
- 1...Bd7
- 2.Qxd7#
- 1...Sb4
- 2.Qc5#
- 1...Se5
- 2.Qc5#
- 1...f6
- 2.gxf6#
- 1...e5!
- threat
- 1.Qc6?
- 1...f5
- 2.gxf5 ep#
- 1...Rh7
- 2.Bf6#
- 1...Rg8
- 2.Bf6#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Qf6#
- 1...f6
- 2.gxf6#
- 1...Rxd8!
- 1...f5
- 1.Kh2?
- Keys
- 1.Sf6!
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rh7
- 2.Sg8#
- 1...Rg8
- 2.Sxg8#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...e5
- 2.Sd5#
- 1...Rxd8
- 1.Sf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(g);OGATE::B(I)
- R(i);OGATE,XS(H)::PXR(i)=Q
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f),EP
- P(f);OGATE::P(D),XP(f)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- R(g);OGATE::B(I)
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f),EP
- P(f);OGATE::P(D),XP(f)
- Refutation
- R(g);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- R(g);OGATE::B(I)
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f),EP
- P(f);OGATE::P(D),XP(f)
- Refutation
- R(g);CHECK
- Try
- S(H);CHECK
- Vars
- K(e);S_FLIGHT::QAR2(E)
- Refutation
- K(e);P-FLIGHT
- Try
- B(B);
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- P(f);OGATE::P(D),XP(f),EP
- R(g);OGATE::B(I)
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f)
- Refutation
- P(b);
- Try
- B(I);XR(g)
- Threat
- B(I)
- Refutation
- B(j);XB(I)
- Try
- R(F);
- Threat
- QAB1(E)
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- Refutation
- B(h);XR(F)
- Try
- R(F);
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- P(f);OGATE::P(D),XP(f),EP
- R(g);OGATE::B(I)
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f)
- Refutation
- B(h);XR(F)
- Try
- Q(E);
- Threat
- S(H)
- Vars
- P(f);OGATE::P(D),XP(f),EP
- B(h);N_GUARD::QAR1(E),XB(h)
- S(a);N_GUARD::QAB(E)
- P(f);OGATE::P(D),XP(f)
- Refutation
- P(c);
- Try
- Q(E);
- Vars
- P(f);OGATE::P(D),XP(f),EP
- R(g);OGATE::B(I)
- B(h);N_GUARD::QAR1(E)
- B(h);N_GUARD::QAR1(E),XB(h)
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);OGATE::QAB1(E)
- P(f);OGATE::P(D),XP(f)
- Refutation
- R(i);XS(H)
- Try
- Actual
- S(C);
- Vars
- R(i);OGATE,XS(H)::PXR(i)=Q
- R(g);N_GUARD::S(C)
- R(g);N_GUARD::S(C),XR(g)
- B(h);OGATE::P=S
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::QAB(E),XS(a)
- P(c);N_GUARD::S(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).