MESON Chess Problem Database
Problem Display
PID: 255123 (4N3/Q5n1/p2Pp3/Rn2kp2/1K1R4/1pN1P3/1B4q1/7B w - - 0 1)
Gvozdjak, Peter
Lacny, Ludovit
4th Prize, Pravda, 1988
#2
10 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qc5#
- 2.Qxg7#
- 1...Qxh1
- 2.Qxg7#
- 1...Qf3
- 2.Qxg7#
- 1...Qh3
- 2.Qc5#
- 2.Qxg7#
- 1...Qe4
- 2.Qxg7#
- 1...Qd5
- 2.Qxg7#
- 1...Qc6
- 2.Qxg7#
- 1...Qa8
- 2.Qxg7#
- 1...Qg1
- 2.Qc5#
- 1...Qxb2
- 2.Qc5#
- 2.Qxg7#
- 1...Qc2
- 2.Qc5#
- 2.Qxg7#
- 1...Qd2
- 2.Qc5#
- 2.Qxg7#
- 1...Qe2
- 2.Qc5#
- 2.Qxg7#
- 1...Qf2
- 2.Qc5#
- 2.Qxg7#
- 1...Qh2
- 2.Qc5#
- 2.Qxg7#
- 1...Qg3
- 2.Qc5#
- 1...Qg4
- 2.Qc5#
- 1...Qg5
- 2.Qc5#
- 1...Qg6
- 2.Qc5#
- 1...Qf1
- Tries
- 1.Bxg2?
- threat
- 2.Qc5#
- 2.Qxg7#
- 1...f4
- 2.Qc5#
- 1...Sh5
- 2.Qc5#
- 1...Sxe8!
- threat
- 1.Rd1?
- threat
- 2.Qd4#
- 1...Qe4+
- 2.Sxe4#
- 1...Qg4+
- 2.Se4#
- 1...Qd5
- 2.Qxg7#
- 1...Qd2
- 2.Qxg7#
- 1...f4!
- threat
- 1.Rd2?
- threat
- 2.Qd4#
- 1...Qe4+
- 2.Sxe4#
- 1...Qg4+
- 2.Se4#
- 1...Qxd2
- 2.Qxg7#
- 1...Qd5
- 2.Qxg7#
- 1...f4!
- threat
- 1.Rd3?
- threat
- 2.Qd4#
- 1...Qe4+
- 2.Sxe4#
- 1...Qg4+
- 2.Se4#
- 1...Qd5
- 2.Qxg7#
- 1...f4!
- threat
- 1.Rc4?
- threat
- 2.Qd4#
- 1...Qe4
- 2.Qxg7#
- 1...Qd5
- 2.Qxg7#
- 1...Qd2
- 2.Qxg7#
- 1...Qg4
- 2.Qc5#
- 1...f4!
- threat
- 1.Re4+?
- 1...fxe4
- 2.Qc5#
- 1...Qxe4+!
- 1...fxe4
- 1.Rf4?
- threat
- 2.Qd4#
- 1...Qd5
- 2.Qxg7#
- 1...Qd2
- 2.Qxg7#
- 1...Qe4+!
- threat
- 1.Rd5+?
- 1...Qxd5
- 2.Qxg7#
- 1...exd5!
- 1...Qxd5
- 1.Rxb5+?
- 1...Qd5
- 2.Qxg7#
- 1...axb5!
- 1...Qd5
- 1.Bxg2?
- Keys
- 1.Se4!
- threat
- 2.Qc5#
- 1...Qd2+
- 2.Rxd2#
- 1...Qxe4
- 2.Qxg7#
- 1...Qc2
- 2.Qxg7#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD,XB(A)::QAB(I),XS(h)
- Q(a);N_GUARD::QAB(I),XS(h)
- Q(a);N_GUARD,P_PINR(F)::QAB(I),XS(h)
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Q(a);N_GUARD::QAR2(I)
- Q(a);N_GUARD,P_PINR(F)::QAR2(I)
- Tries
- Try
- B(A);XQ(a)
- Threat
- DUALS(2)
- Vars
- P(e);::QAR2(I)
- S(h);::QAR2(I)
- Refutation
- S(h);XS(J)
- Try
- R(F);
- Threat
- QAB1(I)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+S(C),XQ(a)
- Q(a);CHECK,N_GUARD::B(B)+S(C)
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Q(a);N_GUARD,P_PINS(C)::QAB(I),XS(h)
- Refutation
- P(e);
- Try
- R(F);
- Threat
- QAB1(I)
- Vars
- Q(a);CHECK::B(B)+S(C),XQ(a)
- Q(a);CHECK::B(B)+S(C)
- Q(a);N_GUARD,P_PINS(C),XR(F)::QAB(I),XS(h)
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Refutation
- P(e);
- Try
- R(F);
- Threat
- QAB1(I)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+S(C),XQ(a)
- Q(a);CHECK,N_GUARD::B(B)+S(C)
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Refutation
- P(e);
- Try
- R(F);
- Threat
- QAB1(I)
- Vars
- Q(a);N_GUARD,P_PINR(F)::QAB(I),XS(h)
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Q(a);N_GUARD,P_PINS(C)::QAB(I),XS(h)
- Q(a);N_GUARD,P_PINR(F)::QAR2(I)
- Refutation
- P(e);
- Try
- R(F);CHECK
- Vars
- P(e);XR(F)::QAR2(I)
- Refutation
- Q(a);CHECK,XR(F)
- Try
- R(F);
- Threat
- QAB1(I)
- Vars
- Q(a);N_GUARD,N_SPINS(c)::QAB(I),XS(h)
- Q(a);N_GUARD,P_PINS(C)::QAB(I),XS(h)
- Refutation
- Q(a);CHECK
- Try
- R(F);CHECK,N_PINS(c)
- Vars
- Q(a);XR(F)::QAB(I),XS(h)
- Refutation
- P(g);XR(F)
- Try
- R(G);CHECK,XS(c)
- Vars
- Q(a);P_SPINQ(a)::QAB(I),XS(h)
- Refutation
- P(f);XR(G)
- Try
- Actual
- S(C);
- Threat
- QAR2(I)
- Vars
- Q(a);CHECK::B(B)+R(F),XQ(a)
- Q(a);N_GUARD,P_PINR(F),XS(C)::QAB(I),XS(h)
- Q(a);N_GUARD::QAB(I),XS(h)
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).