MESON Chess Problem Database
Problem Display
PID: 43069 (q7/8/2B1P1R1/1Q1N4/3KN3/4Pk2/2pP2pP/6Bn w - - 0 1)
Mansfield, Comins
3rd HM., British Chess Magazine, 1970
#2
11 + 5
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Sf2
- 2.Rg3#
- 1...Sg3
- 2.Rxg3#
- 1...Sf2
- Tries
- 1.Sf2?
- threat
- 2.Rf6#
- 1...Qa1+
- 2.Sc3#
- 1...Qa4+
- 2.Sb4#
- 1...Qa7+
- 2.Sb6#
- 1...Qh8+
- 2.Sf6#
- 1...Sxf2
- 2.Rg3#
- 1...Qb8
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qf8
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Sg3
- 2.Rxg3#
- 1...Qd8!
- threat
- 1.Sec3?
- threat
- 2.Qe2#
- 1...Qa4+
- 2.Sb4#
- 1...Qa7+
- 2.Sb6#
- 1...Qh8+
- 2.Sf6#
- 1...Qa6
- 2.Sb6#
- 1...Sg3
- 2.Rxg3#
- 1...c1S!
- threat
- 1.Sg3?
- threat
- 2.Qe2#
- 1...Qa1+
- 2.Sc3#
- 1...Qa4+
- 2.Sb4#
- 1...Qa7+
- 2.Sb6#
- 1...Qh8+
- 2.Sf6#
- 1...Sxg3
- 2.Rxg3#
- 1...Qa6
- 2.Sb6#
- 1...c1S!
- threat
- 1.Sdc3?
- threat
- 2.Qe2#
- 2.Qf5#
- 2.Qh5#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...c1S
- 2.Qf5#
- 2.Qh5#
- 1...Qa5
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 2.Qe2#
- 1...Qa6
- 2.Qf5#
- 2.Qh5#
- 1...Qb8
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 2.Qe2#
- 2.Qh5#
- 1...Qf8
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 2.Qe2#
- 2.Qh5#
- 1...Sf2
- 2.Rg3#
- 2.Qe2#
- 2.Qf5#
- 1...Sg3
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Sf4?
- threat
- 2.Qe2#
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...c1S
- 2.Qh5#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 2.Qe2#
- 1...Qa6
- 2.Qh5#
- 1...Sf2
- 2.Rg3#
- 2.Qe2#
- 1...Sg3
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Sb6?
- threat
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sf2
- 2.Rg3#
- 1...Sg3
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Sdf6?
- threat
- 2.Sg5#
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Qh8
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Sf2
- 2.Sg5#
- 2.Rg3#
- 1...Sg3
- 2.Sg5#
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Sc7?
- threat
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sf2
- 2.Rg3#
- 1...Sg3
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Se7?
- threat
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sf2
- 2.Rg3#
- 1...Sg3
- 2.Rxg3#
- 1...Qa4+!
- threat
- 1.Sf2?
- Keys
- 1.Sb4!
- threat
- 2.Qh5#
- 1...Qa1+
- 2.Sc3#
- 1...Qa7+
- 2.Sc5#
- 1...Qd8+
- 2.Sd6#
- 1...Qh8+
- 2.Sf6#
- 1...Qa5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sf2
- 2.Rg3#
- 1...Sg3
- 2.Rxg3#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- Tries
- Try
- S(F);
- Threat
- R(K)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(H)
- S(a);N_GUARD,XS(F)::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);P_PINS(H)
- Try
- S(F);
- Threat
- QAB1(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(H)
- Q(e);N_GUARD::B(I)+S(H)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- P(b);
- Try
- S(F);
- Threat
- QAB1(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(H)
- S(a);OGATE,XS(F)::R1(K),XS(a)
- Q(e);N_GUARD::B(I)+S(H)
- Refutation
- P(b);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);CHECK
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- P(b);::QAB(G)
- Q(e);::QAB(G)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);CHECK
- Try
- S(H);
- Threat
- QAB(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);CHECK
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- Refutation
- Q(e);CHECK
- Try
- S(H);
- Threat
- QAB(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);CHECK
- Try
- S(H);
- Threat
- QAB(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- Q(e);CHECK
- Try
- Actual
- S(H);
- Threat
- QAB(G)
- Vars
- Q(e);CHECK,N_GUARD::B(I)+S(F)
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
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