MESON Chess Problem Database
Problem Display
PID: 12011 (Nb3rb1/5Pp1/1N1kPPR1/1K1P2Q1/3P4/3nnr2/8/8 w - - 0 1)
Rice, John Michael
2nd HM., The Problemist, 1973
#2
10 + 8
| 5174 | Chess Problem Spectrum | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Rxf7
- 2.Sc8#
- 1...Rc8
- 2.Sxc8#
- 1...Re8
- 2.fxe8S#
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 2.dxc5#
- 1...Se5
- 2.Qxe5#
- 2.dxe5#
- 1...Sd1
- 2.Sc4#
- 1...Sf1
- 2.Sc4#
- 1...Sc2
- 2.Sc4#
- 1...Sg2
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sg4
- 2.Sc4#
- 1...Sxd5
- 2.Qxd5#
- 1...Rxf7
- Tries
- 1.e7?
- threat
- 2.exf8Q#
- 2.exf8B#
- 1...Rxf6
- 2.exf8Q#
- 2.exf8B#
- 1...Rxf7
- 2.e8S#
- 1...Bxf7
- 2.exf8Q#
- 2.exf8B#
- 1...Sxd5
- 2.Qxd5#
- 1...gxf6
- 2.exf8Q#
- 2.exf8B#
- 1...Rf1
- 2.exf8Q#
- 2.exf8B#
- 1...Rf2
- 2.exf8Q#
- 2.exf8B#
- 1...Rg3
- 2.fxg7#
- 2.exf8Q#
- 2.exf8B#
- 1...Rh3
- 2.fxg7#
- 2.exf8Q#
- 2.exf8B#
- 1...Rf4
- 2.exf8Q#
- 2.exf8B#
- 1...Rf5
- 2.exf8Q#
- 2.exf8B#
- 1...Rd8
- 2.exd8Q#
- 2.exd8R#
- 1...Re8
- 2.fxe8S#
- 1...Ba7
- 2.exf8Q#
- 2.exf8B#
- 1...Bc7
- 2.exf8Q#
- 2.exf8B#
- 1...Bh7
- 2.exf8Q#
- 2.exf8B#
- 1...Sc1
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Se1
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sb2
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sf2
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sb4
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sf4
- 2.Qe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sc5
- 2.Qe5#
- 2.dxc5#
- 2.exf8Q#
- 2.exf8B#
- 1...Se5
- 2.Qxe5#
- 2.dxe5#
- 2.exf8Q#
- 2.exf8B#
- 1...Sd1
- 2.exf8Q#
- 2.exf8B#
- 1...Sf1
- 2.exf8Q#
- 2.exf8B#
- 1...Sc2
- 2.exf8Q#
- 2.exf8B#
- 1...Sg2
- 2.exf8Q#
- 2.exf8B#
- 1...Sc4
- 2.exf8Q#
- 2.exf8B#
- 1...Sg4
- 2.exf8Q#
- 2.exf8B#
- 1...Sf5
- 2.fxg7#
- 1...Rc8!
- threat
- 1.e7?
- Keys
- 1.fxg7!
- threat
- 2.gxf8Q#
- 2.gxf8B#
- 1...R3xf7
- 2.exf7#
- 1...R8xf7
- 2.Sc8#
- 1...Bxf7
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sxd5
- 2.Sc4#
- 1...Rf6
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rf1
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rf2
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rg3
- 2.e7#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rh3
- 2.e7#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rf4
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rf5
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rc8
- 2.Sxc8#
- 1...Rd8
- 2.Qxd8#
- 1...Re8
- 2.fxe8S#
- 1...Ba7
- 2.gxf8Q#
- 2.gxf8B#
- 1...Bc7
- 2.gxf8Q#
- 2.gxf8B#
- 1...Bh7
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sc1
- 2.gxf8Q#
- 2.gxf8B#
- 1...Se1
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sb2
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sf2
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sb4
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sf4
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sc5
- 2.dxc5#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Se5
- 2.dxe5#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sd1
- 2.Sc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sf1
- 2.Sc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sc2
- 2.Sc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sg2
- 2.Sc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sc4
- 2.Sxc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sg4
- 2.Sc4#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sf5
- 2.e7#
- threat
- 1.fxg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- R(g);N_GUARD,XP(I)::S(E)
- R(g);N_GUARD::S(E),XR(g)
- R(g);OGATE::PXR(g)=S
- S(a);N_GUARD::QAB1(D)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(b);OGATE,XP(C)::QAR1(D),XS(b)
- Tries
- Try
- P(F);
- Threat
- PXR(g)=Q
- Vars
- R(c);P_SPINR(c),XP(G)::PXR(g)=Q
- R(g);N_GUARD,XP(I)::P=S
- B(h);XP(I)::PXR(g)=Q
- S(b);OGATE,XP(C)::QAR1(D),XS(b)
- P(e);P_SPINP(e),XP(G)::PXR(g)=Q
- R(c);::PXR(g)=Q
- R(c);P_PINP(C)::PXR(g)=Q
- R(g);OGATE::PXR(g)=Q
- R(g);OGATE::PXR(g)=S
- B(f);::PXR(g)=Q
- B(h);::PXR(g)=Q
- S(b);::PXR(g)=Q
- S(b);S_CUTR(c)::R(H)+P(G),XP(e)
- Refutation
- R(g);
- Try
- Actual
- P(G);XP(e)
- Threat
- PXR(g)=Q
- Vars
- R(c);OGATE,XP(I)::R(H)+P(F),XR(c)
- R(g);N_GUARD,XP(I)::S(E)
- B(h);XP(I)::PXR(g)=Q
- S(b);N_GUARD,XP(C)::S(E)
- R(c);::PXR(g)=Q
- R(c);P_PINP(C)::PXR(g)=Q
- R(g);N_GUARD::S(E),XR(g)
- R(g);N_GUARD::QAR2(D),XR(g)
- R(g);OGATE::PXR(g)=S
- B(f);::PXR(g)=Q
- B(h);::PXR(g)=Q
- S(a);::PXR(g)=Q
- S(b);S_CUTR(c)::R(H)+P(F)
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