MESON Chess Problem Database
Problem Display
PID: 253127 (7q/2PPR3/1B1p4/QP1k1N2/3p4/pbp1p2p/3nB3/K7 w - - 0 1)
Gockel, Hubert
Deutsche Schachzeitung, 1985
#2
9 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Qa8#
- 1...Qf6
- 2.Qa8#
- 1...Qg7
- 2.Qa8#
- 1...Qh4
- 2.Qa8#
- 1...Qh5
- 2.Qa8#
- 1...Qh6
- 2.Qa8#
- 1...Qh7
- 2.Qa8#
- 1...Qa8
- 2.Qxa8#
- 1...Sc4
- 2.Bf3#
- 1...d3
- 2.Sxe3#
- 1...Qe5
- Tries
- 1.Re8?
- threat
- 2.Qa8#
- 1...d3
- 2.Sxe3#
- 1...Qxe8!
- threat
- 1.Qxc3?
- threat
- 2.Qc6#
- 1...dxc3
- 2.Sxe3#
- 1...Qa8
- 2.Qxd4#
- 1...Sc4
- 2.Bf3#
- 1...d3
- 2.Sxe3#
- 1...Bc4!
- threat
- 1.c8Q?
- threat
- 2.Qb7#
- 2.Qaa8#
- 2.Qc6#
- 1...d3
- 2.Sxe3#
- 2.Qaa8#
- 2.Qc6#
- 1...Qxc8!
- threat
- 1.c8S?
- threat
- 2.Qa8#
- 1...d3
- 2.Sxe3#
- 1...Qxc8!
- threat
- 1.c8B?
- threat
- 2.Bb7#
- 2.Qa8#
- 1...d3
- 2.Sxe3#
- 1...Qxc8!
- threat
- 1.d8Q?
- threat
- 2.Qaa8#
- 2.Qxd6#
- 1...Qe5
- 2.Qaa8#
- 2.Qda8#
- 1...d3
- 2.Sxe3#
- 1...Qf6
- 2.Qaa8#
- 2.Qda8#
- 1...Qh6
- 2.Qaa8#
- 2.Qda8#
- 1...Qe8
- 2.Qxd6#
- 1...Sc4
- 2.Bf3#
- 2.Qaa8#
- 1...Se4
- 2.Qaa8#
- 1...Qxd8!
- threat
- 1.d8R?
- threat
- 2.Rxd6#
- 2.Qa8#
- 1...Qe5
- 2.Qa8#
- 1...d3
- 2.Sxe3#
- 1...Qf6
- 2.Qa8#
- 1...Qh6
- 2.Qa8#
- 1...Qe8
- 2.Rxd6#
- 1...Sc4
- 2.Bf3#
- 2.Qa8#
- 1...Se4
- 2.Qa8#
- 1...Qxd8!
- threat
- 1.Re8?
- Keys
- 1.Qxa3!
- threat
- 2.Qxd6#
- 1...Qe5
- 2.Qa8#
- 1...d3
- 2.Sxe3#
- 1...Qf6
- 2.Qa8#
- 1...Qh6
- 2.Qa8#
- 1...Qa8
- 2.Qxa8#
- 1...Sc4
- 2.Bf3#
- 1...Se4
- 2.Qxb3#
- threat
- 1.Qxa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(j);N_GUARD::QAB(C)
- Q(j);N_GUARD::QAB(C),XQ(j)
- S(a);N_GUARD,SBLOCK::B(B)
- P(g);N_GUARD::S(E),XP(e)
- Tries
- Try
- R(I);
- Threat
- QAB(C)
- Vars
- P(g);N_GUARD::S(E),XP(e)
- Refutation
- Q(j);XR(I)
- Try
- Q(C);XP(d)
- Threat
- QAB1(C)
- Vars
- P(g);N_GUARD,XQ(C)::S(E),XP(e)
- Q(j);N_GUARD::QAR1(C),XP(g)
- S(a);N_GUARD::B(B)
- P(g);N_GUARD,P_PINQ(C)::S(E),XP(e)
- Refutation
- B(c);
- Try
- P(G);
- Threat
- DUALS(3)
- Refutation
- Q(j);XQ(G)
- Try
- P(G);
- Threat
- QAB(C)
- Vars
- P(g);N_GUARD::S(E),XP(e)
- Refutation
- Q(j);XS(G)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- P(g);N_GUARD::S(E),XP(e)
- Refutation
- Q(j);XB(G)
- Try
- P(H);P_PINP(i)
- Threat
- DUALS(2)
- Vars
- P(g);N_GUARD::S(E),XP(e)
- Q(j);::QAR1(H),XP(i)
- S(a);::QAB(C)
- Refutation
- Q(j);N_SPINP(i),XQ(H)
- Try
- P(H);P_PINP(i)
- Threat
- DUALS(2)
- Vars
- Q(j);::QAB(C)
- P(g);N_GUARD::S(E),XP(e)
- Q(j);::R1(H),XP(i)
- S(a);::QAB(C)
- Refutation
- Q(j);N_SPINP(i),XR(H)
- Try
- Actual
- Q(C);XP(b)
- Threat
- QAR1(C),XP(i)
- Vars
- Q(j);N_GUARD::QAB(C)
- P(g);N_GUARD::S(E),XP(e)
- Q(j);N_GUARD,P_PINQ(C)::QAB(C),XQ(j)
- S(a);N_GUARD,SBLOCK::B(B)
- S(a);N_GUARD::QAB(C),XB(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).