MESON Chess Problem Database
Problem Display
PID: 81090 (1K4BB/pp6/q2N4/2N1P1p1/pP1k4/4n1p1/3P4/3n1Q1b w - - 0 1)
Eerkes, Allard Pieter
Problemas, 1985
#2
9 + 10
| 56 | The Problemist | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Qxd3#
- 1...Qb5
- 2.Sxb5#
- 1...Qa5
- 2.Qd3#
- 1...Qb6
- 2.Qd3#
- 1...Qc6
- 2.Qd3#
- 1...Qxd6+
- 2.exd6#
- 1...Bd5
- 2.e6#
- 1...Sf2
- 2.Qa1#
- 1...Sxf1
- 2.Sf5#
- 1...Sc2
- 2.Sf5#
- 1...Sg2
- 2.Sf5#
- 1...Sc4
- 2.Sf5#
- 2.Qd3#
- 1...Sg4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...a3
- 2.Sb3#
- 1...b5
- 2.Qd3#
- 1...Qd3
- Tries
- 1.Bc4?
- threat
- 2.Se6#
- 2.Qd3#
- 2.e6#
- 1...Qxd6+
- 2.exd6#
- 1...Sxf1
- 2.Se6#
- 2.e6#
- 1...Sxc4
- 2.Qd3#
- 1...Be4
- 2.Se6#
- 2.e6#
- 1...Bd5
- 2.Qd3#
- 2.e6#
- 1...Sb2
- 2.Se6#
- 2.e6#
- 1...Sf2
- 2.Se6#
- 2.Qa1#
- 2.e6#
- 1...Sg4
- 2.Se6#
- 2.Sf5#
- 2.Qd3#
- 1...Sd5
- 2.Se6#
- 2.Sf5#
- 2.Qd3#
- 1...Sf5
- 2.Se6#
- 2.Sxf5#
- 2.Qd3#
- 1...Qxc4!
- threat
- 1.Qc4+?
- 1...Sxc4
- 2.Sf5#
- 1...Qxc4!
- 1...Sxc4
- 1.Qxa6?
- threat
- 2.Sb5#
- 2.Qd3#
- 1...Be4
- 2.Sb5#
- 1...Bd5
- 2.Qd3#
- 2.e6#
- 1...Bc6
- 2.Qd3#
- 1...Sb2
- 2.Sb5#
- 1...Sf2
- 2.Sb5#
- 1...Sc3
- 2.Qd3#
- 1...Sc4
- 2.Sb5#
- 2.Sf5#
- 2.Qxc4#
- 1...Sd5
- 2.Se6#
- 2.Sf5#
- 2.Qd3#
- 2.Qc4#
- 1...b5
- 2.Sxb5#
- 1...bxa6!
- threat
- 1.Qxh1?
- threat
- 2.Qe4#
- 2.e6#
- 1...Qxd6+
- 2.exd6#
- 1...Qf1
- 2.Qe4#
- 1...Qd3
- 2.Se6#
- 2.e6#
- 1...Qc6
- 2.e6#
- 1...Sf2
- 2.Qa1#
- 2.e6#
- 1...Sc3
- 2.e6#
- 1...Sg2
- 2.Sf5#
- 1...Sc4
- 2.Sf5#
- 2.Qe4#
- 2.Qd5#
- 1...Sg4
- 2.Sf5#
- 2.Qe4#
- 2.Qd5#
- 1...Sd5
- 2.Qe4#
- 2.Qxd5#
- 1...Sf5
- 2.Sxf5#
- 2.Qe4#
- 2.Qd5#
- 1...g2!
- threat
- 1.Qf3?
- threat
- 2.e6#
- 1...Qxd6+
- 2.exd6#
- 1...Sc4
- 2.Se6#
- 2.Sf5#
- 2.Qd3#
- 1...Sg4
- 2.Se6#
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...Sf5
- 2.Se6#
- 2.Sxf5#
- 1...Bxf3!
- threat
- 1.Qf4+?
- 1...Be4
- 2.Qxe4#
- 1...gxf4!
- 1...Be4
- 1.Qf5?
- threat
- 2.e6#
- 1...Qxd6+
- 2.exd6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sc4
- 2.Qd3#
- 1...Sd5
- 2.Se6#
- 1...Sg4!
- threat
- 1.Bc4?
- Keys
- 1.Qb5!
- threat
- 2.Se6#
- 1...Qxd6+
- 2.exd6#
- 1...Qxb5
- 2.Sxb5#
- 1...Bd5
- 2.e6#
- 1...Sc4
- 2.Sf5#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(h);N_GUARD::QAR1(A),XQ(h)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::QAR1(A)
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- B(b);SBLOCK::B(I)+P(E)
- S(a);OGATE::QAB(A)
- S(c);N_GUARD,XQ(A)::S(F)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- P(e);N_GUARD::S(D)
- P(j);S_CUTQ(h)::QAR1(A)
- Tries
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- S(c);XB(H)::QAR1(A)
- Refutation
- Q(h);XB(H)
- Try
- Q(A);CHECK
- Vars
- S(c);XQ(A)::S(F)
- Refutation
- Q(h);XQ(A)
- Try
- Q(A);XQ(h)
- Threat
- DUALS(2)
- Vars
- B(b);::S(F)
- B(b);::QAR1(A)
- S(a);::S(F)
- S(a);::QAR1(A)
- P(j);::S(F),XP(j)
- Refutation
- P(j);XQ(A)
- Try
- Q(A);XB(b)
- Threat
- DUALS(2)
- Vars
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- Q(h);::QAR1(A)
- Q(h);::B(I)+P(E)
- S(a);::B(I)+P(E)
- S(c);N_GUARD::S(F)
- Refutation
- P(d);
- Try
- Q(A);
- Threat
- B(I)+P(E)
- Vars
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- S(c);::S(D)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(A),XB(b)
- Refutation
- P(g);XQ(A)
- Try
- Q(A);
- Threat
- B(I)+P(E)
- Vars
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- S(c);XQ(A)::S(F),XS(c)
- S(c);S_CUTQ(h)::QAR1(A)
- S(c);SBLOCK::S(D)
- Refutation
- S(c);
- Try
- Actual
- Q(A);
- Threat
- S(D)
- Vars
- Q(h);CHECK,OGATE,XS(F)::B(I)+P(E),XQ(h)
- Q(h);XQ(A)::S(F),XQ(h)
- B(b);SBLOCK::B(I)+P(E)
- S(c);N_GUARD::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).