MESON Chess Problem Database
Problem Display
PID: 29886 (3r4/p4q2/3Rp1n1/R4N2/4kP2/1N6/2p1P1Pb/2Qn1K2 w - - 0 1)
Shire, David J
The Problemist, 1987
#2
9 + 9
| 3256 | David Shire Selected Chess Problems | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qxf5
- 2.Ra4#
- 1...Rxd6
- 2.Sxd6#
- 1...Ra8
- 2.Rd4#
- 1...Rb8
- 2.Rd4#
- 1...Rc8
- 2.Rd4#
- 1...Re8
- 2.Rd4#
- 1...Rf8
- 2.Rd4#
- 1...Rg8
- 2.Rd4#
- 1...Rh8
- 2.Rd4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bxf4
- 2.Qxc2#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3+
- 2.Qxe3#
- 1...Sxf4
- 2.Sd2#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...exf5
- 2.Sc5#
- 1...Qxf5
- Tries
- 1.Rxe6+?
- 1...Se5
- 2.Raxe5#
- 2.Rexe5#
- 1...Qxe6!
- 1...Se5
- 1.Rxd8?
- threat
- 2.Sd6#
- 2.Rd4#
- 1...Se3+
- 2.Qxe3#
- 1...Qxf5
- 2.Ra4#
- 2.Rd4#
- 1...Bxf4
- 2.Rd4#
- 2.Qxc2#
- 1...exf5
- 2.Sc5#
- 2.Rd4#
- 1...Se5
- 2.Sd6#
- 2.Rxe5#
- 1...e5
- 2.Sd6#
- 1...Qf6
- 2.Sd6#
- 1...Qc7
- 2.Rd4#
- 1...Qe7
- 2.Rd4#
- 1...Qg7
- 2.Sd6#
- 1...Qf8
- 2.Rd4#
- 1...Bg1
- 2.Sg3#
- 2.Sd6#
- 1...Qd7!
- threat
- 1.e3?
- threat
- 2.Sd2#
- 2.Qxc2#
- 1...Sxe3+
- 2.Qxe3#
- 1...Qxf5
- 2.Ra4#
- 1...Sxf4
- 2.Sd2#
- 1...exf5
- 2.Sc5#
- 1...Se5
- 2.Rxe5#
- 1...e5
- 2.Qxc2#
- 1...Qc7
- 2.Sd2#
- 1...Rc8
- 2.Sd2#
- 2.Rd4#
- 1...Sb2
- 2.Sd2#
- 1...Sf2
- 2.Sd2#
- 1...Rxd6!
- threat
- 1.g4?
- threat
- 2.Sc5#
- 2.Ra4#
- 1...Se3+
- 2.Qxe3#
- 1...Qxf5
- 2.Ra4#
- 1...Rxd6
- 2.Sxd6#
- 1...Bxf4
- 2.Qxc2#
- 1...Sxf4
- 2.Sd2#
- 1...exf5
- 2.Sc5#
- 1...Qe8
- 2.Sc5#
- 1...Qf6
- 2.Sc5#
- 1...Qb7
- 2.Sc5#
- 1...Qd7
- 2.Sc5#
- 1...Qg7
- 2.Sc5#
- 1...Rb8
- 2.Sc5#
- 2.Rd4#
- 1...Rc8
- 2.Rd4#
- 1...Bg1
- 2.Sg3#
- 1...Sb2
- 2.Sc5#
- 2.Qe3#
- 1...Sc3
- 2.Sc5#
- 2.Qe3#
- 1...Se5
- 2.Sc5#
- 2.Rxe5#
- 1...e5
- 2.Sc5#
- 1...Qc7!
- threat
- 1.Rxe6+?
- Keys
- 1.g3!
- threat
- 2.Sd2#
- 2.Qxc2#
- 1...Se3+
- 2.Qxe3#
- 1...Qxf5
- 2.Ra4#
- 1...Rxd6
- 2.Sxd6#
- 1...Bxg3
- 2.Sxg3#
- 1...Sxf4
- 2.Sd2#
- 2.Qxf4#
- 1...exf5
- 2.Sc5#
- 1...Se5
- 2.Rxe5#
- 1...e5
- 2.Qxc2#
- 1...Qc7
- 2.Sd2#
- 1...Rc8
- 2.Sd2#
- 2.Rd4#
- 1...Sb2
- 2.Sd2#
- 2.Qe3#
- 1...Sf2
- 2.Sd2#
- 2.Qe3#
- threat
- 1.g3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- Q(h);P_PINP(F),SBLOCK,XS(H)::R(G)
- R(i);XR(I)::S(H),XR(i)
- R(i);N_GUARD::R1(I)
- B(c);N_GUARD::S(H)
- B(c);N_GUARD::S(H),XB(c)
- B(c);SBLOCK,XP(F)::QAB(A),XP(b)
- S(a);N_GUARD::QAR1(A)
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- S(f);SBLOCK,XP(F)::S(E)
- S(f);N_GUARD::R1(G)
- S(f);N_GUARD::R1(G),XS(f)
- P(e);SBLOCK,XS(H)::S(E)
- Tries
- Try
- R(I);CHECK,XP(e)
- Refutation
- Q(h);XR(I)
- Try
- R(I);XR(i)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- P(e);::S(H)
- Q(h);::S(H)
- Q(h);::R1(I)
- Refutation
- Q(h);
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XP(C)::QAR1(A),XS(a)
- Q(h);P_PINP(F),SBLOCK,XS(H)::R(G)
- S(f);XP(F)::S(E)
- P(e);SBLOCK,XS(H)::S(E)
- S(f);N_GUARD::R1(G),XS(f)
- P(e);::QAB(A),XP(b)
- Q(h);::S(E)
- S(a);::S(E)
- Refutation
- R(i);XR(I)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- Q(h);P_PINP(F),XS(H)::R(G)
- R(i);XR(I)::S(H),XR(i)
- B(c);SBLOCK,XP(F)::QAB(A),XP(b)
- S(f);SBLOCK,XP(F)::S(E)
- P(e);XS(H)::S(E)
- Q(h);::S(E)
- R(i);N_GUARD::R1(I)
- B(c);N_GUARD::S(H)
- P(e);::S(E)
- Refutation
- Q(h);
- Try
- Actual
- P(D);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- Q(h);P_PINP(F),SBLOCK,XS(H)::R(G)
- R(i);XR(I)::S(H),XR(i)
- B(c);XP(D)::S(H),XB(c)
- P(e);SBLOCK,XS(H)::S(E)
- S(f);N_GUARD::R1(G),XS(f)
- P(e);::QAB(A),XP(b)
- Q(h);::S(E)
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