MESON Chess Problem Database
Problem Display
PID: 262386 (2b2R2/K3p3/4p3/1Q2N1n1/3Bkp1r/p1P1np2/q3P1r1/4N3 w - - 0 1)
Knuppert, Hugo
Europe Echecs, 1975
#2
8 + 12
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Qd3#
- 1...Sc4
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sh3
- 2.exf3#
- 1...Sh7
- 2.exf3#
- 1...Qd5
- Tries
- 1.S5d3?
- threat
- 2.Qe5#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Rxf4#
- 1...Sd5
- 2.Sc5#
- 1...Sf7
- 2.exf3#
- 1...e5
- 2.Qxe5#
- 1...Qd5!
- threat
- 1.S5xf3?
- threat
- 2.Qe5#
- 1...Sxf3
- 2.exf3#
- 1...Qd5
- 2.Sd2#
- 2.Qd3#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Sxg5#
- 1...Sd5
- 2.Qd3#
- 1...e5
- 2.Qxe5#
- 1...Sf7!
- threat
- 1.Sc4?
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 1...Sf7
- 2.exf3#
- 1...e5
- 2.Qxe5#
- 1...Sd5!
- threat
- 1.Sg4?
- threat
- 2.Qe5#
- 1...Qd5
- 2.Qd3#
- 1...Sc4
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sf7
- 2.exf3#
- 1...e5
- 2.Qxe5#
- 1...Sxg4!
- threat
- 1.Sd7?
- threat
- 2.Qe5#
- 1...Qd5
- 2.Qd3#
- 1...Sc4
- 2.Qc6#
- 1...Sd5
- 2.Sc5#
- 2.Qd3#
- 1...Sf7
- 2.exf3#
- 1...e5
- 2.Qxe5#
- 1...Sg4!
- threat
- 1.Sf7?
- threat
- 2.Qe5#
- 1...Sxf7
- 2.exf3#
- 1...Qd5
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...e5
- 2.Qxe5#
- 1...Sg4
- 2.Sxg5#
- 1...Sc4!
- threat
- 1.S5d3?
- Keys
- 1.Sg6!
- threat
- 2.Qe5#
- 1...Qd5
- 2.Qd3#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Rxf4#
- 1...Sd5
- 2.Qd3#
- 1...Sf7
- 2.exf3#
- 1...e5
- 2.Qxe5#
- threat
- 1.Sg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(a);SBLOCK::QAB1(E)
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(d);SBLOCK::QAB1(E)
- S(i);N_GUARD::P(B),XP(e)
- Tries
- Try
- S(F);
- Threat
- QAR1(E)
- Vars
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(d);S_CUTR(h)::R1(H),XP(g)
- S(d);SBLOCK::S(F)
- S(i);N_GUARD::P(B),XP(e)
- P(j);::QAR1(E),XP(j)
- Refutation
- Q(a);
- Try
- S(F);XP(e)
- Threat
- QAR1(E)
- Vars
- S(i);OGATE,XS(F)::P(B),XS(i)
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(d);S_CUTR(b)::S(F),XS(i)
- S(d);SBLOCK::QAB1(E)
- P(j);::QAR1(E),XP(j)
- Refutation
- S(i);
- Try
- S(F);
- Threat
- QAR1(E)
- Vars
- S(d);N_GUARD,XS(F)::QAB(E)
- S(d);N_GUARD::QAB(E)
- S(i);N_GUARD::P(B),XP(e)
- P(j);::QAR1(E),XP(j)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAR1(E)
- Vars
- Q(a);SBLOCK::QAB1(E)
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(d);SBLOCK::QAB1(E)
- S(i);N_GUARD::P(B),XP(e)
- P(j);::QAR1(E),XP(j)
- Refutation
- S(d);XS(F)
- Try
- S(F);
- Threat
- QAR1(E)
- Vars
- Q(a);SBLOCK::QAB1(E)
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(i);N_GUARD::P(B),XP(e)
- P(j);::QAR1(E),XP(j)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAR1(E)
- Vars
- S(i);N_GUARD,XS(F)::P(B),XP(e)
- Q(a);SBLOCK::QAB1(E)
- S(d);SBLOCK::QAB1(E)
- P(j);::QAR1(E),XP(j)
- S(d);S_CUTR(b)::S(F),XS(i)
- Refutation
- S(d);
- Try
- Actual
- S(F);
- Threat
- QAR1(E)
- Vars
- Q(a);SBLOCK::QAB1(E)
- S(d);N_GUARD,S_CUTQ(a)::QAB(E)
- S(d);S_CUTR(h)::R1(H),XP(g)
- S(d);SBLOCK::QAB1(E)
- S(i);N_GUARD::P(B),XP(e)
- P(j);::QAR1(E),XP(j)
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).