MESON Chess Problem Database
Problem Display
PID: 200086 (6q1/4RN2/5P2/8/p1r1Nk2/7Q/Kp4P1/1B3r2 w - - 0 1)
Shire, David J
The Problemist, 1982
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxb1
- 2.Qf3#
- 1...Rfc1
- 2.Qf3#
- 1...Rd1
- 2.Qf3#
- 1...Re1
- 2.Qf3#
- 1...Rg1
- 2.Qf3#
- 1...Rh1
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rxe4
- 2.Rxe4#
- 1...Rxb1
- Tries
- 1.Sf2?
- threat
- 2.Sd3#
- 2.Qe3#
- 2.Qf3#
- 1...Qxf7
- 2.Qg4#
- 2.Qe3#
- 2.Qh4#
- 1...Qxg2
- 2.Sd3#
- 2.Qe3#
- 1...Rxb1
- 2.Sd3#
- 2.Qf3#
- 1...Qh7
- 2.Qg4#
- 2.Qe3#
- 2.Qf3#
- 1...Qg3
- 2.Qf5#
- 1...Qg4
- 2.Qxg4#
- 2.Qe3#
- 1...Qg6
- 2.Qe3#
- 2.Qf3#
- 1...Qa8
- 2.Sd3#
- 2.Qg4#
- 2.Qh2#
- 2.Qe3#
- 2.Qh4#
- 1...Qd8
- 2.Qg4#
- 2.Qh2#
- 2.Qe3#
- 2.Qf3#
- 2.Qh4#
- 1...Rd1
- 2.Qe3#
- 2.Qf3#
- 1...Re1
- 2.Sd3#
- 2.Qf3#
- 1...Rc2
- 2.Sd3#
- 2.Re4#
- 2.Qf3#
- 1...Rc3
- 2.Re4#
- 1...Rd4
- 2.Qe3#
- 2.Qf3#
- 1...Re4
- 2.Sd3#
- 2.Rxe4#
- 2.Qf3#
- 1...Rxf2!
- threat
- 1.Sc3?
- threat
- 2.Se2#
- 2.Sd5#
- 1...Qxf7
- 2.Qh4#
- 1...Rxc3
- 2.Re4#
- 1...Qg4
- 2.Sd5#
- 2.Qe3#
- 1...Qg5
- 2.Se2#
- 1...Qa8
- 2.Se2#
- 2.Qh4#
- 1...Qd8
- 2.Se2#
- 2.Qh4#
- 1...Rd1
- 2.Se2#
- 2.Qf3#
- 1...Re1
- 2.Sd5#
- 2.Qf3#
- 1...Rf2
- 2.Sd5#
- 1...Rd4
- 2.Se2#
- 1...Re4
- 2.Sd5#
- 2.Rxe4#
- 1...Rc5
- 2.Se2#
- 2.Re4#
- 1...Qxg2!
- threat
- 1.Sg3?
- threat
- 2.Se2#
- 2.Sh5#
- 1...Qxf7
- 2.Qh4#
- 1...Qxg3
- 2.Qf5#
- 1...Re4
- 2.Sh5#
- 2.Rxe4#
- 1...Qh7
- 2.Se2#
- 1...Qg5
- 2.Se2#
- 1...Qg6
- 2.Se2#
- 1...Qh8
- 2.Se2#
- 1...Re1
- 2.Sh5#
- 1...Rf2
- 2.Sh5#
- 1...Rc2
- 2.Sh5#
- 2.Re4#
- 1...Rc5
- 2.Se2#
- 2.Re4#
- 1...Qg4!
- threat
- 1.Seg5?
- threat
- 2.Se6#
- 2.Qh4#
- 2.g3#
- 1...Qxf7
- 2.Qh4#
- 1...Rxb1
- 2.Qf3#
- 2.g3#
- 1...Qh7
- 2.Se6#
- 2.g3#
- 1...Qc8
- 2.g3#
- 1...Qh8
- 2.Se6#
- 2.g3#
- 1...Re1
- 2.Qf3#
- 2.Qh4#
- 2.g3#
- 1...Rg1
- 2.Se6#
- 2.Qf3#
- 2.Qh4#
- 1...Rh1
- 2.Se6#
- 2.Qf3#
- 2.g3#
- 1...Rf3
- 2.Qxf3#
- 2.Qh4#
- 1...Rc2
- 2.Re4#
- 2.g3#
- 1...Rc3
- 2.Se6#
- 2.Re4#
- 2.Qh4#
- 1...Re4
- 2.Rxe4#
- 1...Rc6
- 2.Re4#
- 2.Qh4#
- 2.g3#
- 1...Qxg5!
- threat
- 1.Qg3+?
- 1...Kf5
- 2.Sfd6#
- 2.Sh6#
- 2.Re5#
- 1...Qxg3!
- 1...Kf5
- 1.Sf2?
- Keys
- 1.Sc5!
- threat
- 2.Sd3#
- 2.Se6#
- 1...Qxf7
- 2.Qh4#
- 1...Rxb1
- 2.Sd3#
- 2.Qf3#
- 1...Rxc5
- 2.Re4#
- 1...Qh7
- 2.Se6#
- 1...Qg3
- 2.Qf5#
- 1...Qg4
- 2.Qe3#
- 1...Qg6
- 2.Se6#
- 1...Qc8
- 2.Sd3#
- 1...Qd8
- 2.Se6#
- 2.Qh4#
- 1...Rd1
- 2.Se6#
- 2.Qf3#
- 1...Re1
- 2.Sd3#
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rc2
- 2.Sd3#
- 2.Re4#
- 1...Rc3
- 2.Se6#
- 2.Re4#
- 1...Rd4
- 2.Se6#
- 1...Re4
- 2.Sd3#
- 2.Rxe4#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD,XB(A)::QAR1(D)
- R(a);N_GUARD::QAR1(D)
- R(a);N_GUARD::QAR1(D),XR(a)
- R(d);OGATE,P_PINS(H),XS(E)::R1(G),XR(d)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(f);SBLOCK::QAR1(D)
- R(d);N_GUARD,P_PINS(H)::R1(G)
- Refutation
- R(a);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XS(H)::QAR2(D)
- R(d);N_GUARD,P_PINS(H),XS(E)::R1(G)
- Q(f);::S(E)
- R(a);::S(E)
- R(d);P_PINS(H)::S(E)
- Refutation
- Q(f);XP(C)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XS(H)::QAR2(D)
- Q(f);SBLOCK,XS(E)::QAR1(D)
- Q(f);::S(E)
- R(a);::S(E)
- Refutation
- Q(f);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(f);XS(H)::QAR2(D)
- Q(f);::P(C)
- R(d);N_GUARD,P_PINS(H)::R1(G),XR(d)
- Refutation
- Q(f);XS(E)
- Try
- Q(D);CHECK
- Refutation
- Q(f);XQ(D)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XS(H)::QAR2(D)
- R(d);N_GUARD,P_PINS(H),XS(E)::R1(G)
- Q(f);::S(E)
- Q(f);SBLOCK::QAR1(D)
- Q(f);SBLOCK::QAB1(D)
- R(a);N_GUARD::QAR1(D),XR(a)
- R(d);P_PINS(H)::S(E)
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