MESON Chess Problem Database
Problem Display
PID: 110852 (8/3pK3/2BP4/2B1k1p1/5RR1/1P6/4q3/b2bQ3 w - - 0 1)
Salazar Lopez, Francisco
2nd Prize, Themes-64, 1972
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Qxe3#
- 1...Qe4
- 2.Qxe4#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bxd4#
- 1...Bc2
- 2.Qxa1#
- 1...Bxb3
- 2.Qxe2#
- 1...gxf4
- 2.Rg5#
- 1...Qe3
- Tries
- 1.Rf1?
- threat
- 2.Rxg5#
- 2.Qg3#
- 1...Qxe1
- 2.Rxg5#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Qe4
- 2.Rxe4#
- 2.Rxg5#
- 2.Qxe4#
- 1...Bc2
- 2.Qg3#
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Rf2?
- threat
- 2.Rxg5#
- 1...Bc2
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Rf3?
- threat
- 2.Rxg5#
- 2.Qg3#
- 1...Qxe1
- 2.Rxg5#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Qe4
- 2.Rxe4#
- 2.Rxg5#
- 2.Qxe4#
- 1...Bc2
- 2.Qg3#
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Re4+?
- 1...Qxe4
- 2.Qxe4#
- 1...Kf5!
- 1...Qxe4
- 1.Rf6?
- threat
- 2.Rxg5#
- 2.Qg3#
- 1...Qxe1
- 2.Rxg5#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Qe4
- 2.Rxe4#
- 2.Rxg5#
- 2.Qxe4#
- 1...Bc2
- 2.Qg3#
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Rf7?
- threat
- 2.Rxg5#
- 2.Qg3#
- 1...Qxe1
- 2.Rxg5#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Qe4
- 2.Rxe4#
- 2.Rxg5#
- 2.Qxe4#
- 1...Bc2
- 2.Qg3#
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Rf8?
- threat
- 2.Rxg5#
- 2.Qg3#
- 1...Qxe1
- 2.Rxg5#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Qe4
- 2.Rxe4#
- 2.Rxg5#
- 2.Qxe4#
- 1...Bc2
- 2.Qg3#
- 2.Qxa1#
- 1...dxc6!
- threat
- 1.Qg3?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 2.Rxg5#
- 1...Qxg4
- 2.Qe3#
- 1...gxf4
- 2.Rg5#
- 2.Qxf4#
- 1...dxc6
- 2.Rxg5#
- 1...Qf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxg5#
- 2.Qe3#
- 1...Qd3
- 2.Rf3#
- 1...Qf3
- 2.Rxf3#
- 2.Rxg5#
- 1...Qc4
- 2.Rxg5#
- 1...Qe1
- 2.Rf2#
- 2.Rxg5#
- 1...Qc2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qd2
- 2.Rxg5#
- 1...Qf2
- 2.Rxf2#
- 2.Rxg5#
- 1...Qg2
- 2.Rxg5#
- 1...Qh2
- 2.Rxg5#
- 2.Qe3#
- 1...Qe3
- 2.Rxg5#
- 2.Qxe3#
- 1...Bc2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe4!
- threat
- 1.Qa5?
- threat
- 2.Bd4#
- 1...Qxg4
- 2.Be3#
- 1...gxf4
- 2.Rg5#
- 1...Qb5
- 2.Qxa1#
- 1...Bd4
- 2.Bxd4#
- 1...Qe4!
- threat
- 1.Qh1?
- threat
- 2.Qd5#
- 2.Qh8#
- 1...Qxg4
- 2.Qe4#
- 1...Bxb3
- 2.Qh8#
- 1...gxf4
- 2.Rg5#
- 2.Qd5#
- 2.Qh5#
- 1...Qd3
- 2.Qh8#
- 1...Qf3
- 2.Qh8#
- 1...Qc4
- 2.Qh8#
- 1...Qd2
- 2.Qe4#
- 2.Qh8#
- 1...Qg2
- 2.Qh8#
- 1...Qh2
- 2.Qe4#
- 2.Qd5#
- 1...Qe4
- 2.Qxe4#
- 2.Qh8#
- 1...dxc6!
- threat
- 1.Rf1?
- Keys
- 1.Be3!
- threat
- 2.Rxg5#
- 1...Qxg4
- 2.Qa5#
- 1...Qxe3
- 2.Qxe3#
- 1...gxf4
- 2.Rg5#
- 1...Qd3
- 2.Bd4#
- 1...Qc2
- 2.Bd4#
- 1...Qg2
- 2.Bd4#
- 1...Bc2
- 2.Qxa1#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(c);OGATE::QAR2(A),XQ(c)
- Q(c);OGATE::QAR1(A),XQ(c)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);N_GUARD::B(E),XB(a)
- B(b);OGATE::QAB(A),XB(a)
- B(b);N_GUARD,XP(B)::QAR(A),XQ(c)
- P(e);SBLOCK,XR(C)::R(D)
- Tries
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XQ(A)::R(D),XP(e)
- Refutation
- P(f);XB(F)
- Try
- R(C);
- Threat
- R(D),XP(e)
- Vars
- B(b);OGATE::QAB(A),XB(a)
- Refutation
- P(f);XB(F)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XQ(A)::R(D),XP(e)
- Refutation
- P(f);XB(F)
- Try
- R(C);CHECK,N_PINQ(c)
- Vars
- Q(c);OGATE,P_SPINQ(c),XR(C)::QAR1(A),XQ(c)
- Refutation
- K(d);P-FLIGHT,P_PINR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XQ(A)::R(D),XP(e)
- Refutation
- P(f);XB(F)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XQ(A)::R(D),XP(e)
- Refutation
- P(f);XB(F)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XQ(A)::R(D),XP(e)
- Refutation
- P(f);XB(F)
- Try
- Q(A);N_PINQ(c)
- Threat
- DUALS(7)
- Vars
- Q(c);N_GUARD,XR(D)::QAR2(A)
- P(f);XB(F)::R(D),XP(e)
- Q(c);::QAB(A)+R(C)
- Q(c);::R(D),XP(e)
- Refutation
- Q(c);
- Try
- Q(A);N_PINQ(c)
- Threat
- QAR(A)+B(E),DCHECK
- Vars
- Q(c);N_GUARD,XR(D)::QAR(A)+B(E)
- P(e);SBLOCK,XR(C)::R(D)
- Q(c);N_GUARD::QAB(A),XB(a)
- B(a);::QAR(A)+B(E),DCHECK,XB(a)
- Refutation
- Q(c);
- Try
- Q(A);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XR(D)::QAR1(A)
- B(b);XP(B)::QAB(A)
- Q(c);::QAB(A)
- Refutation
- P(f);XB(F)
- Try
- Actual
- B(E);N_PINQ(c)
- Threat
- R(D),XP(e)
- Vars
- Q(c);N_GUARD,XR(D)::QAR(A)
- Q(c);OGATE,P_SPINQ(c),XB(E)::QAR2(A),XQ(c)
- P(e);XR(C)::R(D)
- Q(c);::QAR(A)+B(E),DCHECK
- B(b);OGATE::QAB(A),XB(a)
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).