MESON Chess Problem Database
Problem Display
PID: 249156 (1B4N1/6Q1/4kpn1/KR1N1qpr/1p3pB1/3n4/1b1R4/1b1r4 w - - 0 1)
de Blasio, Francis JC
Parallele 50, 1950
(First published on Thu Dec 14 1950)
#2
8 + 12
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Sc7#
- 2.Rb6#
- 1...Se1
- 2.Sc7#
- 2.Rb6#
- 1...Sf2
- 2.Sc7#
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sde5
- 2.Sc7#
- 1...Sh4
- 2.Qe7#
- 1...Sge5
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sf8
- 2.Qe7#
- 1...Sh8
- 2.Qe7#
- 1...Sc1
- Tries
- 1.Sc3?
- threat
- 2.Bxf5#
- 1...Se7
- 2.Qxe7#
- 1...Sc1
- 2.Qxf6#
- 2.Qd7#
- 1...Se1
- 2.Qxf6#
- 2.Qd7#
- 1...Sf2
- 2.Qxf6#
- 2.Qd7#
- 1...Sc5
- 2.Rb6#
- 2.Qxf6#
- 1...Sde5
- 2.Qxf6#
- 1...Sh4
- 2.Qe7#
- 1...Sge5
- 2.Qe7#
- 1...Qxg4!
- threat
- 1.Sxf4+?
- 1...Sdxf4
- 2.Qd7#
- 1...Sgxf4
- 2.Bxf5#
- 2.Qe7#
- 1...gxf4!
- 1...Sdxf4
- 1.Sb6?
- threat
- 2.Bxf5#
- 2.Qd7#
- 1...Qxg4
- 2.Qd7#
- 1...Rh7
- 2.Bxf5#
- 1...Be5
- 2.Qd7#
- 1...Sc1
- 2.Qd7#
- 1...Se1
- 2.Qd7#
- 1...Sf2
- 2.Qd7#
- 1...Sde5
- 2.Qxf6#
- 1...Sh4
- 2.Qd7#
- 2.Qe7#
- 1...Sge5
- 2.Qxf6#
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sf8
- 2.Bxf5#
- 2.Qe7#
- 1...Sc5!
- threat
- 1.Sdxf6?
- threat
- 2.Bxf5#
- 2.Qd7#
- 1...Qxg4
- 2.Qd7#
- 1...Bxf6
- 2.Bxf5#
- 1...Rh7
- 2.Bxf5#
- 1...Be5
- 2.Qd7#
- 1...Sc1
- 2.Qd7#
- 1...Se1
- 2.Qd7#
- 1...Sf2
- 2.Qd7#
- 1...Sc5
- 2.Rb6#
- 1...Sh4
- 2.Qd7#
- 2.Qe7#
- 1...Sge5
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sf8
- 2.Bxf5#
- 2.Qe7#
- 1...Sde5!
- threat
- 1.Sgxf6?
- threat
- 2.Rb6#
- 2.Qd7#
- 2.Qg8#
- 1...Qxg4
- 2.Qd7#
- 1...Rc1
- 2.Qd7#
- 2.Qg8#
- 1...Rh7
- 2.Rb6#
- 1...Rh8
- 2.Rb6#
- 2.Qd7#
- 1...Bd4
- 2.Qd7#
- 2.Qg8#
- 1...Be5
- 2.Qd7#
- 2.Qg8#
- 1...Sc5
- 2.Rb6#
- 2.Qg8#
- 1...Sde5
- 2.Sc7#
- 1...Sge5
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sf8
- 2.Rb6#
- 2.Qe7#
- 2.Qg8#
- 1...Sh8
- 2.Rb6#
- 2.Qd7#
- 2.Qe7#
- 1...Bxf6!
- threat
- 1.Sh6?
- threat
- 2.Bxf5#
- 2.Qf7#
- 1...Qxg4
- 2.Qf7#
- 1...Se7
- 2.Qxe7#
- 1...Sc1
- 2.Sc7#
- 2.Rb6#
- 2.Qf7#
- 1...Se1
- 2.Sc7#
- 2.Rb6#
- 2.Qf7#
- 1...Sf2
- 2.Sc7#
- 2.Rb6#
- 2.Qf7#
- 1...Sc5
- 2.Rb6#
- 2.Qf7#
- 1...Sde5
- 2.Sc7#
- 1...Sh4
- 2.Qe7#
- 2.Qf7#
- 1...Sge5
- 2.Bxf5#
- 2.Qe7#
- 1...Sh8
- 2.Bxf5#
- 2.Qe7#
- 1...Rxh6!
- threat
- 1.Sc3?
- Keys
- 1.Se3!
- threat
- 2.Bxf5#
- 1...Qxg4
- 2.Rb6#
- 1...Se7
- 2.Qxe7#
- 1...Sc1
- 2.Qd7#
- 1...Se1
- 2.Qd7#
- 1...Sf2
- 2.Qd7#
- 1...Sc5
- 2.Rb6#
- 1...Sde5
- 2.Qxf6#
- 1...Sh4
- 2.Qe7#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- S(d);::R(D)
- S(d);::S(E)
- S(l);N_GUARD::QAR1(F)
- S(l);N_GUARD::QAR1(F),XS(l)
- Tries
- Try
- S(E);P_SPINR(D)
- Threat
- B(B),XQ(g)
- Vars
- S(l);N_GUARD::QAR1(F),XS(l)
- S(d);N_PINR(D)::QAR1(F),XP(k)
- S(l);N_GUARD::QAR1(F)
- S(l);N_GUARD,N_PINR(D)::QAR1(F)
- Refutation
- Q(g);N_PINR(D),N_SPINQ(g),XB(B)
- Try
- S(E);CHECK,P_SPINR(D),XP(f)
- Vars
- S(d);XS(E)::QAB1(F)
- Refutation
- P(h);XS(E)
- Try
- S(E);P_SPINR(D)
- Threat
- DUALS(2)
- Vars
- Q(g);N_PINR(D),N_SPINQ(g),XB(B)::QAB1(F)
- R(i);::B(B),XQ(g)
- B(c);N_PINR(D)::QAB1(F)
- S(d);::QAB1(F)
- S(d);N_PINR(D),S_CUTB(c)::QAR1(F),XP(k)
- S(l);N_GUARD::QAR1(F),XS(l)
- Refutation
- S(d);N_PINR(D)
- Try
- S(E);P_SPINR(D),XP(k)
- Threat
- DUALS(2)
- Vars
- Q(g);N_PINR(D),N_SPINQ(g),XB(B)::QAB1(F)
- B(c);XS(E)::B(B),XQ(g)
- R(i);::B(B),XQ(g)
- B(c);N_PINR(D)::QAB1(F)
- S(d);::QAB1(F)
- S(d);N_PINR(D)::R(D)
- S(l);N_GUARD,N_PINR(D)::QAR1(F)
- S(l);N_GUARD::QAR1(F),XS(l)
- Refutation
- S(d);N_PINR(D)
- Try
- S(H);XP(k)
- Threat
- DUALS(3)
- Vars
- Q(g);N_SPINQ(g),XB(B)::QAB1(F)
- R(i);::R(D)
- S(d);::S(E)
- S(l);N_GUARD::QAR1(F)
- S(l);N_GUARD::QAR1(F),XS(l)
- Refutation
- B(c);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(g);N_SPINQ(g),XB(B)::QAB1(F)
- S(l);N_GUARD::QAR1(F),XS(l)
- S(d);::S(E)
- Refutation
- R(i);XS(H)
- Try
- Actual
- S(E);P_SPINR(D)
- Threat
- B(B),XQ(g)
- Vars
- Q(g);N_PINR(D),N_SPINQ(g),XB(B)::R(D)
- S(l);N_GUARD::QAR1(F),XS(l)
- S(d);::QAB1(F)
- S(d);N_PINR(D)::R(D)
- S(d);N_PINR(D),S_CUTB(c)::QAR1(F),XP(k)
- S(l);N_GUARD::QAR1(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).