MESON Chess Problem Database
Problem Display
PID: 228863 (6B1/3NP1Q1/n2pb3/1P1kr2R/2n5/1P1rpK2/3pNb2/8 w - - 0 1)
Cristoffanini, Guido
Bristol Times and Mirror, 1926
#2
9 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Sc3#
- 1...Rf5+
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Rxh5
- 2.Sf4#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Bxg8
- 2.Qxg8#
- 1...Sc5
- 2.Sf6#
- 1...Rd4
- Tries
- 1.Qg4?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 2.Qxc4#
- 2.Qe4#
- 2.bxc4#
- 1...Rxb3
- 2.Bxe6#
- 2.Qxe6#
- 2.Qd4#
- 2.Qe4#
- 1...Bxg8
- 2.Qxc4#
- 2.Qxg8#
- 2.bxc4#
- 1...Rc3
- 2.Sxc3#
- 2.Bxe6#
- 2.Qxe6#
- 2.Qd4#
- 2.Qe4#
- 1...Rd4
- 2.Sc3#
- 2.Bxe6#
- 2.Qxe6#
- 2.Qxd4#
- 1...Bf7
- 2.Bxf7#
- 2.Qxc4#
- 2.bxc4#
- 1...Sb2
- 2.Bxe6#
- 2.Qxe6#
- 2.Qe4#
- 1...Sa3
- 2.Bxe6#
- 2.Qxe6#
- 2.Qe4#
- 1...Sa5
- 2.Bxe6#
- 2.Qxe6#
- 2.Qe4#
- 1...Sb6
- 2.Bxe6#
- 2.Qxe6#
- 2.Qe4#
- 1...Sc5
- 2.Sf6#
- 2.Qxc4#
- 2.bxc4#
- 1...Sc7
- 2.Qxc4#
- 2.Qe4#
- 2.bxc4#
- 1...Rf5+!
- threat
- 1.Qg6?
- threat
- 2.Bxe6#
- 2.Qxd3#
- 2.Qe4#
- 2.Qxe6#
- 1...Rxb3
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...Bxg8
- 2.Qxg8#
- 1...d1Q
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...d1R
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...Rc3
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...Rd4
- 2.Sc3#
- 2.Bxe6#
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sb2
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...Sb4
- 2.Bxe6#
- 2.Qe4#
- 2.Qxe6#
- 1...Sc5
- 2.Sf6#
- 1...Sc7
- 2.Qxd3#
- 2.Qe4#
- 1...Rf5+!
- threat
- 1.Qh7?
- threat
- 2.Qxd3#
- 2.Qe4#
- 1...Rxb3
- 2.Qe4#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...d1Q
- 2.Qe4#
- 1...d1R
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 1...Rd4
- 2.Sc3#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sc5
- 2.Sf6#
- 1...Rf5+!
- threat
- 1.e8Q?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 2.Qa8#
- 1...Rf5+
- 2.Sf4#
- 1...Bxg8
- 2.Qgxg8#
- 2.Qexg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qexf7#
- 2.Qgxf7#
- 1...Sa5
- 2.Bxe6#
- 2.Qxe6#
- 1...Sb6
- 2.Bxe6#
- 2.Qxe6#
- 1...Sb4
- 2.Bxe6#
- 2.Qxe6#
- 1...Sc5
- 2.Sf6#
- 1...Sb8
- 2.Bxe6#
- 2.Qxe6#
- 1...Sc7!
- threat
- 1.e8S?
- threat
- 2.Sef6#
- 1...Rf5+
- 2.Sf4#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Bh4!
- threat
- 1.e8R?
- threat
- 2.Bxe6#
- 1...Rf5+
- 2.Sf4#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sc5
- 2.Sf6#
- 1...Sc7!
- threat
- 1.Qg4?
- Keys
- 1.Qg2!
- threat
- 2.Kf4#
- 1...Rf5+
- 2.Kg4#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 1...Rd4
- 2.Sc3#
- 1...Bg3
- 2.Kxg3#
- 1...Sc5
- 2.Sf6#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(c);N_GUARD,SBLOCK::S(A)
- R(g);CHECK::S(A)
- R(g);::S(A)
- R(g);N_SPINR(g),XR(E)::S(A)
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- S(h);SBLOCK::S(F)
- Tries
- Try
- Q(H);
- Threat
- DUALS(5)
- Refutation
- R(g);CHECK
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- S(h);SBLOCK::S(F)
- Refutation
- R(g);CHECK
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(c);XP(B)::QAB1(H)
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- P(a);P_PINS(A)::QAB1(H)
- P(a);::QAB1(H)
- R(c);::QAB1(H)
- R(c);N_GUARD,SBLOCK::S(A)
- S(e);::QAB1(H)
- S(h);::QAB1(H)
- S(h);SBLOCK::S(F)
- Refutation
- R(g);CHECK
- Try
- P(G);
- Threat
- DUALS(3)
- Vars
- R(g);CHECK::S(A)
- S(h);SBLOCK::S(F)
- Refutation
- S(h);
- Try
- P(G);
- Threat
- S(G)
- Vars
- R(g);CHECK::S(A)
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- Refutation
- B(b);
- Try
- P(G);
- Threat
- B(I),XB(j)
- Vars
- R(g);CHECK::S(A)
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- S(h);SBLOCK::S(F)
- Refutation
- S(h);
- Try
- Actual
- Q(H);
- Threat
- QAB(H)+K(C)
- Vars
- R(g);CHECK::QAB(H)+K(C)
- B(j);N_SPINB(j),OGATE,XB(I)::QAB(H),XB(j)
- B(j);OGATEB::B(I),XB(j)
- R(c);N_GUARD,SBLOCK::S(A)
- B(b);::QAB(H)+K(C),XB(b)
- S(h);SBLOCK::S(F)
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).