MESON Chess Problem Database
Problem Display
PID: 195202 (8/7B/3K1P2/2P3B1/2N1N3/1P3RP1/n1k1q2Q/nr1b4 w - - 0 1)
Sparke, Arthur M
Densmore MT (Pittsburgh Gazette-Times), 1918
#2
11 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qd2+
- 2.Qxd2#
- 1...Qf2
- 2.Sxf2#
- 1...Qg2
- 2.Sf2#
- 1...Rb2
- 2.Sa3#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Sc1
- 2.Rc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sb4
- 2.Rc3#
- 1...Qd2+
- Tries
- 1.Kc7?
- threat
- 2.Sed6#
- 1...Rxb3
- 2.Sc3#
- 1...Qd2
- 2.Qxd2#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2!
- threat
- 1.Kd7?
- threat
- 2.Sed6#
- 1...Qd2+
- 2.Qxd2#
- 1...Rxb3
- 2.Sc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2!
- threat
- 1.Sf2+?
- 1...Qe4
- 2.Bxe4#
- 1...Qd3+!
- 1...Qe4
- 1.Bf4?
- threat
- 2.Sg5#
- 1...Qd2+
- 2.Qxd2#
- 1...Rxb3
- 2.Sc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2!
- threat
- 1.Bf5?
- 1...Qd2+
- 2.Qxd2#
- 1...Qxh2
- 2.Sf2#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Rb2
- 2.Sa3#
- 1...Sc3
- 2.Rxc3#
- 1...Qf2
- 2.Sxf2#
- 1...Qg2
- 2.Sf2#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Rc1!
- 1...Qd2+
- 1.Bg6?
- 1...Qd2+
- 2.Qxd2#
- 1...Qxh2
- 2.Sf2#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Rb2
- 2.Sa3#
- 1...Sc3
- 2.Rxc3#
- 1...Qf2
- 2.Sxf2#
- 1...Qg2
- 2.Sf2#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Rc1!
- 1...Qd2+
- 1.Qf2?
- 1...Qd2+
- 2.Qxd2#
- 1...Qxf2
- 2.Sxf2#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Rb2
- 2.Sa3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Rc1!
- 1...Qd2+
- 1.Qg2?
- 1...Qd2+
- 2.Qxd2#
- 1...Qxg2
- 2.Sf2#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Rb2
- 2.Sa3#
- 1...Sc3
- 2.Rxc3#
- 1...Qf2
- 2.Sxf2#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Rc1!
- 1...Qd2+
- 1.g4?
- threat
- 2.Sg3#
- 1...Qd2+
- 2.Qxd2#
- 1...Rxb3
- 2.Sc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2+!
- threat
- 1.c6?
- threat
- 2.Sc5#
- 1...Qd2+
- 2.Qxd2#
- 1...Rxb3
- 2.Sc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2!
- threat
- 1.f7?
- threat
- 2.Sf6#
- 1...Qd2+
- 2.Qxd2#
- 1...Rxb3
- 2.Sc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qxh2!
- threat
- 1.Kc7?
- Keys
- 1.Bh6!
- 1...Qd2+
- 2.Qxd2#
- 1...Qxh2
- 2.Sf2#
- 1...Rxb3
- 2.Sc3#
- 1...Sxb3
- 2.Sc3#
- 1...Rc1
- 2.Sg5#
- 1...Rb2
- 2.Sa3#
- 1...Sc3
- 2.Rxc3#
- 1...Qf2
- 2.Sxf2#
- 1...Qg2
- 2.Sf2#
- 1...Sc1
- 2.Rc3#
- 1...Sb4
- 2.Rc3#
- 1...Qd2+
- 1.Bh6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_GUARD::B(K)+S(F),XQ(f)
- Q(f);N_GUARD::B(K)+S(F)
- R(b);SBLOCK::S(E)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- B(K)+S(F)
- Vars
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- Q(f);OGATE::QAR1(A),XQ(f)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);N_SPINQ(f),P_PINP(D),XQ(A)
- Try
- K(I);P-FLIGHT
- Threat
- B(K)+S(F)
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);N_SPINQ(f),XQ(A)
- Try
- S(F);CHECK,N_PINQ(f)
- Vars
- Q(f);N_GUARD,P_SPINQ(f)::B(K),XQ(f)
- Refutation
- Q(f);CHECK,P_SPINQ(f)
- Try
- B(H);
- Threat
- B(K)+S(F)
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);N_SPINQ(f),XQ(A)
- Try
- B(K);
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_GUARD,N_SPINQ(f),P_PINP(D),XQ(A)::B(K)+S(F)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- R(b);SBLOCK::S(E)
- S(d);N_GUARD::R1(C),XS(d)
- Q(f);N_GUARD::B(K)+S(F),XQ(f)
- Q(f);N_GUARD::B(K)+S(F)
- S(d);N_GUARD::R1(C)
- Refutation
- R(b);
- Try
- B(K);
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_GUARD,N_SPINQ(f),P_PINP(D),XQ(A)::B(K)+S(F)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- R(b);SBLOCK::S(E)
- S(d);N_GUARD::R1(C),XS(d)
- Q(f);N_GUARD::B(K)+S(F),XQ(f)
- Q(f);N_GUARD::B(K)+S(F)
- S(d);N_GUARD::R1(C)
- Refutation
- R(b);
- Try
- Q(A);
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_SPINQ(f),XQ(A)::B(K)+S(F),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- R(b);SBLOCK::S(E)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- R(b);
- Try
- Q(A);
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_GUARD,N_SPINQ(f),XQ(A)::B(K)+S(F)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- R(b);SBLOCK::S(E)
- S(d);N_GUARD::R1(C),XS(d)
- Q(f);N_GUARD::B(K)+S(F),XQ(f)
- S(d);N_GUARD::R1(C)
- Refutation
- R(b);
- Try
- P(D);
- Threat
- B(K)+S(F)
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);CHECK,N_SPINQ(f),XQ(A)
- Try
- P(G);
- Threat
- B(K)+S(F)
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);N_SPINQ(f),P_PINP(D),XQ(A)
- Try
- P(J);
- Threat
- B(K)+S(F)
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- Refutation
- Q(f);N_SPINQ(f),P_PINP(D),XQ(A)
- Try
- Actual
- B(H);
- Vars
- Q(f);CHECK,OGATE::QAR1(A),XQ(f)
- Q(f);N_GUARD,N_SPINQ(f),P_PINP(D),XQ(A)::B(K)+S(F)
- R(b);SBLOCK,XP(B)::B(K)+S(F)
- S(a);SBLOCK,XP(B)::B(K)+S(F)
- R(b);SBLOCK::B(K)+S(F)
- R(b);SBLOCK::S(E)
- S(d);N_GUARD::R1(C),XS(d)
- Q(f);N_GUARD::B(K)+S(F),XQ(f)
- Q(f);N_GUARD::B(K)+S(F)
- S(d);N_GUARD::R1(C)
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).