MESON Chess Problem Database
Problem Display
PID: 81914 (3R4/2K1p3/2p2P2/4k1P1/N5Qn/2Npr3/B2p2n1/5q2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
2nd Comm., Schach-Aktiv, 1985
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Qe6#
- 1...Qf5
- 2.Qd4#
- 1...Rf3
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...c5
- 2.Rd5#
- 1...exf6
- 2.Re8#
- 1...Qf4
- Tries
- 1.Sb2?
- threat
- 2.Sc4#
- 1...Qf4
- 2.Qe6#
- 1...Qf5
- 2.Qd4#
- 1...Re4
- 2.Qxe4#
- 1...Sf5!
- threat
- 1.Sc5?
- threat
- 2.Sd7#
- 1...Qf4
- 2.Qe6#
- 1...Qf5
- 2.Qd4#
- 1...Re4
- 2.Qxe4#
- 1...Sf4!
- threat
- 1.Sb2?
- Keys
- 1.Sb6!
- threat
- 2.Sc4#
- 2.Sd7#
- 1...Qf4
- 2.Qe6#
- 1...Qf5
- 2.Qd4#
- 1...Re4
- 2.Qxe4#
- 1...Sf4
- 2.Sc4#
- 1...Sf5
- 2.Sd7#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(a);SBLOCK::QAR1(D)
- Q(a);SBLOCK::QAB1(D)
- R(e);N_GUARD::QAR1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- P(h);N_GUARD::R1(H)
- P(i);OGATEB,XP(F)::R(H)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- Q(a);SBLOCK::QAR1(D)
- Q(a);SBLOCK::QAB1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- Refutation
- S(f);
- Try
- S(C);
- Threat
- S(C)
- Vars
- Q(a);SBLOCK::QAR1(D)
- Q(a);SBLOCK::QAB1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- Refutation
- S(c);
- Try
- Actual
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(a);SBLOCK::QAR1(D)
- Q(a);SBLOCK::QAB1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- S(c);::S(C)
- S(f);::S(C)
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).