MESON Chess Problem Database
Problem Display
PID: 235122 (1q3n2/3N4/4p2B/1Q2PkNB/4p2P/3p2P1/Rb5K/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1979
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Rf2#
- 1...Ba3
- 2.Rf2#
- 1...Bc3
- 2.Rf2#
- 1...Bxe5
- 2.Rf2#
- 1...d2
- 2.Qf1#
- 1...e3
- 2.Qxd3#
- 1...Ba1
- Tries
- 1.Sf3?
- threat
- 2.g4#
- 1...Bxe5
- 2.Sd4#
- 1...exf3
- 2.Qxd3#
- 1...e3
- 2.Qxd3#
- 1...Qxe5!
- threat
- 1.Sh3?
- threat
- 2.g4#
- 1...Bxe5
- 2.Rf2#
- 1...e3
- 2.Qxd3#
- 1...Qxe5!
- threat
- 1.Sh7?
- threat
- 2.g4#
- 1...Bxe5
- 2.Rf2#
- 1...e3
- 2.Qxd3#
- 1...Qxe5!
- threat
- 1.Sf3?
- Keys
- 1.Sf7!
- threat
- 2.g4#
- 1...Qxe5
- 2.Sd6#
- 1...Bxe5
- 2.Rf2#
- 1...e3
- 2.Qxd3#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(a);OGATE::R(A)
- B(a);OGATE,P_PINP(C),P_SPINB(a),XP(F)::R(A)
- P(b);OGATE::QAR(E)
- P(c);OGATEB::QAB(E),XP(b)
- Tries
- Try
- S(G);
- Threat
- P(C)
- Vars
- B(a);N_GUARD,P_PINP(C),P_SPINB(a),XP(F)::S(G)
- P(c);OGATEB,XS(G)::QAB(E),XP(b)
- P(c);OGATEB::QAB(E),XP(b)
- Refutation
- Q(f);P_PINP(C),P_SPINQ(f),XP(F)
- Try
- S(G);
- Threat
- P(C)
- Vars
- B(a);OGATE,P_PINP(C),P_SPINB(a),XP(F)::R(A)
- P(c);OGATEB::QAB(E),XP(b)
- Refutation
- Q(f);P_PINP(C),P_SPINQ(f),XP(F)
- Try
- S(G);
- Threat
- P(C)
- Vars
- B(a);OGATE,P_PINP(C),P_SPINB(a),XP(F)::R(A)
- P(c);OGATEB::QAB(E),XP(b)
- Refutation
- Q(f);P_PINP(C),P_SPINQ(f),XP(F)
- Try
- Actual
- S(G);
- Threat
- P(C)
- Vars
- Q(f);N_GUARD,P_PINP(C),P_SPINQ(f),XP(F)::S(G)
- B(a);OGATE,P_PINP(C),P_SPINB(a),XP(F)::R(A)
- P(c);OGATEB::QAB(E),XP(b)
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).