MESON Chess Problem Database
Problem Display
PID: 42650 (4nK2/rp1Q3p/P5p1/B1kB1P1R/P2p4/1p6/b1q5/2R5 w - - 0 1)
Mansfield, Comins
7th Comm., Magyar Sakkelet, 1969
#2
9 + 10
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rxc4#
- 1...bxa6
- 2.Qc6#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Qc4
- Tries
- 1.Bh1?
- threat
- 2.Qd5#
- 1...Kc4
- 2.Qb5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...b2!
- threat
- 1.Bg2?
- threat
- 2.Qd5#
- 1...Kc4
- 2.Qb5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...b2!
- threat
- 1.Bxb3?
- threat
- 2.Rxc2#
- 2.Qd5#
- 2.fxg6#
- 1...Qxc1
- 2.Qd5#
- 1...gxf5
- 2.Rxc2#
- 2.Rxf5#
- 2.Qd5#
- 1...gxh5
- 2.Rxc2#
- 2.Qd5#
- 1...Qc3
- 2.Qd5#
- 2.fxg6#
- 1...Qc4
- 2.Rxc4#
- 2.fxg6#
- 1...Bb1
- 2.Qd5#
- 2.fxg6#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Rxc2#
- 2.Qc7#
- 1...Sc7
- 2.Rxc2#
- 2.Qxc7#
- 1...Sg7
- 2.Rxc2#
- 2.Qd5#
- 2.Qc7#
- 1...d3
- 2.Qd5#
- 2.fxg6#
- 1...g5
- 2.Rxc2#
- 2.Qd5#
- 1...Bxb3!
- threat
- 1.Bf3?
- threat
- 2.Qd5#
- 1...Kc4
- 2.Qb5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...b2!
- threat
- 1.Be4?
- threat
- 2.Qd5#
- 1...Kc4
- 2.Qb5#
- 2.Qd5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...b2!
- threat
- 1.Be6?
- threat
- 2.Qd5#
- 2.fxg6#
- 1...Qxc1
- 2.Qd5#
- 1...gxf5
- 2.Rxf5#
- 2.Qd5#
- 1...gxh5
- 2.Qd5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Sg7
- 2.Qd5#
- 2.Qc7#
- 1...g5
- 2.Qd5#
- 1...b2!
- threat
- 1.Bxb7?
- threat
- 2.Qc6#
- 2.Qd5#
- 1...Kc4
- 2.Qb5#
- 1...Rxa6
- 2.Qd5#
- 1...b2
- 2.Qc6#
- 1...Sd6
- 2.Qc6#
- 2.Qc7#
- 1...Sf6
- 2.Qc6#
- 2.Qc7#
- 1...Sc7
- 2.Qc6#
- 2.Qxc7#
- 1...d3
- 2.Qd5#
- 1...Rxb7!
- threat
- 1.Bf7?
- threat
- 2.Qd5#
- 2.fxg6#
- 1...Qxc1
- 2.Qd5#
- 1...gxf5
- 2.Rxf5#
- 2.Qd5#
- 1...gxh5
- 2.Qd5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Sg7
- 2.Qd5#
- 2.Qc7#
- 1...g5
- 2.Qd5#
- 1...b2!
- threat
- 1.Bg8?
- threat
- 2.Qd5#
- 2.fxg6#
- 1...Qxc1
- 2.Qd5#
- 1...gxf5
- 2.Rxf5#
- 2.Qd5#
- 1...gxh5
- 2.Qd5#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Sg7
- 2.Qd5#
- 2.Qc7#
- 1...g5
- 2.Qd5#
- 1...b2!
- threat
- 1.Bh1?
- Keys
- 1.Bc4!
- threat
- 2.Qd5#
- 1...Qxf5+
- 2.Bf7#
- 1...Kxc4
- 2.Qb5#
- 1...Qxc4
- 2.fxg6#
- 1...Qe4
- 2.Bd3#
- 1...Qg2
- 2.Be2#
- 1...Sd6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- threat
- 1.Bc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 3
- Sets
- Q(b);OGATE::R1(A),XQ(b)
- P(h);N_GUARD,XP(G)::QAR1(H)
- P(h);N_GUARD::QAR1(H)
- Tries
- Try
- B(D);
- Threat
- QAR1(H)
- Vars
- K(e);P-FLIGHT::QAB1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- QAR1(H)
- Vars
- K(e);P-FLIGHT::QAB1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- Refutation
- P(c);
- Try
- B(D);XP(c)
- Threat
- DUALS(3)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(H)
- S(j);N_GUARD::QAR2(H)
- Refutation
- B(a);XB(D)
- Try
- B(D);
- Threat
- QAR1(H)
- Vars
- K(e);P-FLIGHT::QAB1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- QAR1(H)
- Vars
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(H)
- P(f);XR(F)::QAR1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- P(f);::QAR1(H)
- Refutation
- P(c);
- Try
- B(D);XP(h)
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT::QAB1(H)
- R(g);XP(G)::QAR1(H)
- P(c);::QAR1(H)
- P(d);::QAR1(H)
- Refutation
- R(g);XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(H)
- P(f);XR(F)::QAR1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- P(f);::QAR1(H)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(H)
- P(f);XR(F)::QAR1(H)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
- P(f);::QAR1(H)
- Refutation
- P(c);
- Try
- Actual
- B(D);N_PINQ(b)
- Threat
- QAR1(H)
- Vars
- Q(b);CHECK,OGATEB,P_SPINQ(b),XP(E)::R(A)+B(D)
- K(e);P-FLIGHT,P_SPINQ(b),XB(D)::QAB1(H)
- Q(b);N_GUARD,P_SPINQ(b),XB(D)::R(F)+P(E),XP(f)
- Q(b);OGATEB::R(A)+B(D)
- S(j);N_GUARD::QAR2(H)
- S(j);N_GUARD::QAR2(H),XS(j)
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).