MESON Chess Problem Database
Problem Display
PID: 157889 (2Qbq3/RNn5/1p1B4/1kNP4/8/P4n2/4b2p/1BR4K w - - 0 1)
Gross, Erwin
Deutsche Schachzeitung, 1973
#2
10 + 8
| 4901 | Best Problems | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Qd7#
- 1...Qg6
- 2.Qd7#
- 1...Qd7
- 2.Qxd7#
- 1...Qe3
- 2.Qd7#
- 1...Qe4
- 2.Qd7#
- 1...Qe5
- 2.Qd7#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Bd1
- 2.Bd3#
- 1...Bd3
- 2.Bxd3#
- 1...Qh5
- Tries
- 1.Sb3?
- threat
- 2.a4#
- 1...Qe4
- 2.Qd7#
- 1...Sa6!
- threat
- 1.Sd3?
- threat
- 2.a4#
- 1...Sa6
- 2.Qc4#
- 1...Qe4
- 2.Qd7#
- 1...Bd1!
- threat
- 1.Se6?
- threat
- 2.a4#
- 1...Bd1
- 2.Bd3#
- 1...Sa6!
- threat
- 1.Sd7?
- threat
- 2.a4#
- 1...Sa6
- 2.Qc6#
- 1...Bd1
- 2.Bd3#
- 1...Qe4!
- threat
- 1.Sb3?
- Keys
- 1.Se4!
- threat
- 2.a4#
- 1...Qxe4
- 2.Qd7#
- 1...Sa6
- 2.Sc3#
- 1...Bd1
- 2.Bd3#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(h);N_GUARD::QAB(J)
- Q(h);N_GUARD::QAB(J),XQ(h)
- B(a);N_GUARD::B(A)
- B(a);N_GUARD::B(A),XB(a)
- Tries
- Try
- S(E);
- Threat
- P(D)
- Vars
- Q(h);N_GUARD::QAB(J)
- Refutation
- S(f);
- Try
- S(E);
- Threat
- P(D)
- Vars
- S(f);OGATE::QAB1(J)
- Q(h);N_GUARD::QAB(J)
- Refutation
- B(a);
- Try
- S(E);
- Threat
- P(D)
- Vars
- B(a);N_GUARD::B(A)
- Refutation
- S(f);
- Try
- S(E);
- Threat
- P(D)
- Vars
- S(f);OGATE::QAB1(J)
- B(a);N_GUARD::B(A)
- Refutation
- Q(h);
- Try
- Actual
- S(E);
- Threat
- P(D)
- Vars
- Q(h);N_GUARD,XS(E)::QAB(J)
- S(f);::S(E)
- B(a);N_GUARD::B(A)
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).