MESON Chess Problem Database
Problem Display
PID: 54662 (r1b2Kn1/1ppkp3/p1N3Bp/5p1q/3N1B1p/8/1Q6/3RR3 w - - 0 1)
Mansfield, Comins
Skakistika Chronika, 1971
#2
8 + 12
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Qxd1
- 2.Be8#
- 1...Qe2
- 2.Be8#
- 1...Qf3
- 2.Be8#
- 1...Qg4
- 2.Be8#
- 1...Qg5
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...bxc6
- 2.Sf3#
- 1...Qxd1
- Tries
- 1.Sc2+?
- 1...Qxd1
- 2.Be8#
- 1...Kxc6!
- 1...Qxd1
- 1.Se2+?
- 1...Ke6
- 2.Sd8#
- 2.Qe5#
- 1...Kxc6!
- 1...Ke6
- 1.Sb3+?
- 1...Qxd1
- 2.Be8#
- 1...Kxc6!
- 1...Qxd1
- 1.Sb5+?
- 1...Qxd1
- 2.Be8#
- 1...Kxc6!
- 1...Qxd1
- 1.Sxf5+?
- 1...Qxd1
- 2.Be8#
- 1...Kxc6!
- 1...Qxd1
- 1.Se6+?
- 1...Qxd1
- 2.Be8#
- 1...Kxc6!
- 1...Qxd1
- 1.Se5+?
- 1...Kd8
- 2.Sdc6#
- 2.Se6#
- 1...Kd6!
- 1...Kd8
- 1.Sb8+?
- 1...Kd8
- 2.Sdc6#
- 2.Se6#
- 1...Rxb8!
- 1...Kd8
- 1.Bxf5+?
- 1...e6
- 2.Bxe6#
- 1...Qxf5+!
- 1...e6
- 1.Bxh5?
- threat
- 2.Be8#
- 1...bxc6
- 2.Sc2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sxf5#
- 2.Se6#
- 1...Sf6
- 2.Rxe7#
- 1...e5!
- threat
- 1.Qc1?
- threat
- 2.Sf3#
- 1...Qxd1
- 2.Be8#
- 1...Qxg6
- 2.Se6#
- 1...Qe2
- 2.Be8#
- 1...Qf3
- 2.Sxf3#
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...e5!
- threat
- 1.Qc3?
- threat
- 2.Sf3#
- 1...Qxd1
- 2.Be8#
- 1...Qxg6
- 2.Se6#
- 1...Qe2
- 2.Be8#
- 1...Qf3
- 2.Sxf3#
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...e5!
- threat
- 1.Qa2?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...bxc6
- 2.Se2#
- 2.Sf3#
- 1...Qe2
- 2.Be8#
- 2.Qd5#
- 1...Qf3
- 2.Be8#
- 2.Qe6#
- 1...Sf6
- 2.Rxe7#
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- 1...Qxg6!
- threat
- 1.Qc2?
- threat
- 2.Sf3#
- 1...Qxd1
- 2.Be8#
- 1...Qxg6
- 2.Se6#
- 1...Qe2
- 2.Be8#
- 1...Qf3
- 2.Sxf3#
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...e5!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...bxc6
- 2.Se2#
- 2.Sf3#
- 1...Qe2
- 2.Be8#
- 2.Qd5#
- 1...Qf3
- 2.Be8#
- 2.Qe6#
- 1...Sf6
- 2.Rxe7#
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- 1...Qxg6!
- threat
- 1.Qb5?
- threat
- 2.Sf3#
- 2.Qd5#
- 1...Qxd1
- 2.Be8#
- 2.Qd5#
- 1...Qxg6
- 2.Se6#
- 1...bxc6
- 2.Sf3#
- 1...e5
- 2.Qd5#
- 1...Qe2
- 2.Be8#
- 2.Qd5#
- 1...Qf3
- 2.Sxf3#
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...e6
- 2.Se2#
- 2.Sf3#
- 1...axb5!
- threat
- 1.Sc2+?
- Keys
- 1.Qg2!
- threat
- 2.Qd5#
- 1...Qxg6
- 2.Se6#
- 1...bxc6
- 2.Sf3#
- 1...Qf3
- 2.Be8#
- 1...Sf6
- 2.Rxe7#
- 1...e6
- 2.Se2#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(c);N_GUARD,XR(A)::B(G)
- Q(c);N_GUARD::B(G)
- S(l);N_GUARD::R1(B),XP(i)
- P(f);SBLOCK,XS(F)::R(A)+S(D)
- Tries
- Try
- S(D);CHECK
- Vars
- Q(c);XR(A)::B(G)
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(D);CHECK
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(D);CHECK
- Vars
- Q(c);XR(A)::B(G)
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(D);CHECK
- Vars
- Q(c);XR(A)::B(G)
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(D);CHECK,XP(b)
- Vars
- Q(c);XR(A)::B(G)
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(D);CHECK
- Vars
- Q(c);XR(A)::B(G)
- Refutation
- K(h);S_FLIGHT,XS(F)
- Try
- S(F);CHECK
- Refutation
- K(h);P-FLIGHT
- Try
- S(F);CHECK
- Refutation
- R(j);XS(F)
- Try
- B(G);CHECK,XP(b)
- Vars
- P(i);P_SPINP(i)::B(G),XP(i)
- Refutation
- Q(c);CHECK,XB(G)
- Try
- B(G);XQ(c)
- Threat
- B(G)
- Vars
- S(l);N_GUARD::R1(B),XP(i)
- Refutation
- P(i);
- Try
- Q(C);
- Threat
- R(A)+S(D)
- Vars
- Q(c);N_GUARD,XR(A)::B(G)
- Q(c);N_GUARD,XB(G)::R(A)+S(D)
- Q(c);N_GUARD::B(G)
- S(l);N_GUARD::R1(B),XP(i)
- Refutation
- P(i);
- Try
- Q(C);
- Threat
- R(A)+S(D)
- Vars
- Q(c);N_GUARD,XR(A)::B(G)
- Q(c);N_GUARD,XB(G)::R(A)+S(D)
- Q(c);N_GUARD::B(G)
- S(l);N_GUARD::R1(B),XP(i)
- Refutation
- P(i);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(i);::QAB1(C),XP(i)
- Refutation
- Q(c);XB(G)
- Try
- Q(C);
- Threat
- R(A)+S(D)
- Vars
- Q(c);N_GUARD,XR(A)::B(G)
- Q(c);N_GUARD,XB(G)::R(A)+S(D)
- Q(c);N_GUARD::B(G)
- S(l);N_GUARD::R1(B),XP(i)
- Refutation
- P(i);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(i);::QAB1(C),XP(i)
- Refutation
- Q(c);XB(G)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XB(G)::R(A)+S(D)
- P(f);P_SPINP(f),XS(F)::R(A)+S(D)
- P(i);::QAR2(C)
- S(l);N_GUARD::R1(B),XP(i)
- Refutation
- P(d);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- QAR2(C)
- Vars
- Q(c);N_GUARD,XB(G)::R(A)+S(D)
- P(f);SBLOCK,XS(F)::R(A)+S(D)
- Q(c);N_GUARD::B(G)
- S(l);N_GUARD::R1(B),XP(i)
- P(i);SBLOCK::R(A)+S(D)
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).