MESON Chess Problem Database
Problem Display
PID: 23360 (1BRKN3/8/8/3kp3/Q2Nn3/4n3/8/8 w - - 0 1)
Nemcek, Milan
5th Prize, Pravda, 1971-1972
#2
6 + 4
| 5454 | Near Snap | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sc5
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...exd4
- 2.Qc6#
- 1...Sd1
- Tries
- 1.Kd7?
- 1...Sf6+
- 2.Sxf6#
- 1...exd4
- 2.Qc6#
- 2.Qa8#
- 1...Sc4
- 2.Qxc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sc5+!
- 1...Sf6+
- 1.Ke7?
- 1...exd4
- 2.Qc6#
- 2.Qa8#
- 1...Sc4
- 2.Qxc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sc5
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5+!
- 1...exd4
- 1.Sb3?
- threat
- 2.Qc6#
- 1...Ke6
- 2.Qd7#
- 1...Sd6
- 2.Sc7#
- 1...Sc5!
- threat
- 1.Sf5?
- threat
- 2.Qc6#
- 1...Ke6
- 2.Qd7#
- 1...Sxf5
- 2.Qc4#
- 1...Sc5
- 2.Sc7#
- 1...Sd6!
- threat
- 1.Sc7+?
- 1...Kd6
- 2.Qc6#
- 1...Kc5!
- 1...Kd6
- 1.Rc3?
- 1...exd4
- 2.Qc6#
- 1...Sc4
- 2.Qxc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sc5
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sxc3!
- 1...exd4
- 1.Rc4?
- threat
- 2.Qc6#
- 1...Sc5
- 2.Sf6#
- 1...Sxc4!
- threat
- 1.Rc5+?
- 1...Sxc5
- 2.Sf6#
- 1...Kxc5!
- 1...Sxc5
- 1.Rc6?
- threat
- 2.Sc7#
- 1...Sc4
- 2.Qxc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sc5
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...exd4!
- threat
- 1.Qb3+?
- 1...Sc4
- 2.Qxc4#
- 1...Kxd4!
- 1...Sc4
- 1.Qb5+?
- 1...Kxd4
- 2.Bxe5#
- 1...Sc5!
- 1...Kxd4
- 1.Qa2+?
- 1...Sc4
- 2.Qxc4#
- 1...Kxd4!
- 1...Sc4
- 1.Qb4?
- threat
- 2.Sc7#
- 1...Sc4
- 2.Qxc4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 1...Sc5
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...exd4!
- threat
- 1.Kd7?
- Keys
- 1.Se6!
- threat
- 2.Qc6#
- 1...Kxe6
- 2.Qd7#
- 1...Sc5
- 2.S6c7#
- 1...Sd6
- 2.S8c7#
- threat
- 1.Se6!
Anticipated by 49705(1958)
This anticipates 35626(1991-1992)
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- P(d);SBLOCK,XS(B)::QAB1(A)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::S(F),XS(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(a);N_GUARD::QAB1(A)
- Refutation
- S(b);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(a);N_GUARD::QAB1(A)
- Refutation
- S(a);CHECK
- Try
- S(B);
- Threat
- QAB1(A)
- Vars
- K(c);S_FLIGHT::QAB1(A)
- S(b);SBLOCK::S(F)
- Refutation
- S(b);
- Try
- S(B);
- Threat
- QAB1(A)
- Vars
- K(c);S_FLIGHT::QAB1(A)
- S(a);N_GUARD,XS(B)::QAB1(A)
- S(b);SBLOCK::S(F)
- Refutation
- S(b);
- Try
- S(F);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(A)
- Refutation
- K(c);P-FLIGHT
- Try
- R(D);
- Vars
- P(d);SBLOCK,XS(B)::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(a);N_GUARD::QAB1(A)
- Refutation
- S(b);XR(D)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- S(b);N_GUARD::S(F)
- Refutation
- S(a);XR(D)
- Try
- R(D);CHECK
- Vars
- S(b);SBLOCK,XR(D)::S(F)
- Refutation
- K(c);P-FLIGHT,XR(D)
- Try
- R(D);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- Refutation
- P(d);XS(B)
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
- Refutation
- K(c);P-FLIGHT,XS(B)
- Try
- Q(A);CHECK
- Vars
- K(c);P-FLIGHT,XS(B)::B(C),XP(d)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
- Refutation
- K(c);P-FLIGHT,XS(B)
- Try
- Q(A);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- Refutation
- P(d);XS(B)
- Try
- Actual
- S(B);
- Threat
- QAB1(A)
- Vars
- K(c);S_FLIGHT,XS(B)::QAB1(A)
- S(b);SBLOCK::S(B)
- S(b);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).