MESON Chess Problem Database
Problem Display
PID: 242644 (B2R4/r2p2QK/1Nr1p1R1/4Np1p/4k3/2P5/q2PP2B/2n5 w - - 0 1)
Gockel, Hubert
Comm., Deutsche Schachzeitung, 1980
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd3
- 2.exd3#
- 1...Sd3
- Tries
- 1.Sd3?
- threat
- 2.Sf2#
- 2.Sc5#
- 2.Qd4#
- 2.Qe5#
- 1...Qxd2
- 2.Qd4#
- 2.Qe5#
- 1...Rxa8
- 2.Sf2#
- 2.Qd4#
- 2.Qe5#
- 1...Sxd3
- 2.Qd4#
- 1...f4
- 2.Qe5#
- 1...Qc4
- 2.Sf2#
- 2.Qe5#
- 1...Qd5
- 2.Sf2#
- 1...Qa3
- 2.Sf2#
- 2.Qd4#
- 2.Qe5#
- 1...Qa4
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Qa5
- 2.Sf2#
- 2.Qd4#
- 1...Ra4
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Ra5
- 2.Sf2#
- 2.Qd4#
- 1...Rb7
- 2.Sf2#
- 2.Qd4#
- 2.Qe5#
- 1...Sb3
- 2.Sf2#
- 2.Qe5#
- 1...e5
- 2.Sf2#
- 2.Sc5#
- 2.Qxe5#
- 1...d5
- 2.Sf2#
- 1...d6
- 2.Sf2#
- 1...Sxe2!
- threat
- 1.Sf3?
- threat
- 2.Sg5#
- 2.Qd4#
- 2.Qe5#
- 1...Qxd2
- 2.Qe5#
- 1...f4
- 2.Qe5#
- 1...Qc4
- 2.Sg5#
- 2.Qe5#
- 1...Qd5
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 2.Qe5#
- 1...Qa5
- 2.Sg5#
- 2.Qd4#
- 1...Ra4
- 2.Sg5#
- 2.Qe5#
- 1...Ra5
- 2.Sg5#
- 2.Qd4#
- 1...Sb3
- 2.Sg5#
- 2.Qe5#
- 1...Sd3
- 2.Sg5#
- 2.Qd4#
- 1...e5
- 2.Sg5#
- 2.Qxe5#
- 1...d5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 1...Sxe2!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 2.Qe5#
- 1...Qxd2
- 2.Qe5#
- 1...fxg4
- 2.Qe5#
- 1...hxg4
- 2.Qd4#
- 2.Qe5#
- 1...f4
- 2.Qe5#
- 1...Qc4
- 2.Sf2#
- 2.Sf6#
- 2.Qe5#
- 1...Qd5
- 2.Sf2#
- 2.Sf6#
- 1...Qa4
- 2.Sf2#
- 2.Sf6#
- 2.Qe5#
- 1...Qa5
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Ra4
- 2.Sf2#
- 2.Sf6#
- 2.Qe5#
- 1...Ra5
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Sb3
- 2.Sf2#
- 2.Sf6#
- 2.Qe5#
- 2.d3#
- 1...Sd3
- 2.Sf6#
- 2.Qd4#
- 1...e5
- 2.Sf2#
- 2.Sf6#
- 2.Qxe5#
- 1...d5
- 2.Sf2#
- 2.Sf6#
- 1...d6
- 2.Sf2#
- 2.Sf6#
- 1...Sxe2!
- threat
- 1.Sf7?
- threat
- 2.Sg5#
- 2.Sd6#
- 2.Qd4#
- 2.Qe5#
- 1...Qxd2
- 2.Qe5#
- 1...Rxa8
- 2.Sg5#
- 2.Qd4#
- 2.Qe5#
- 1...f4
- 2.Sd6#
- 2.Qe5#
- 1...Qc4
- 2.Sg5#
- 2.Sd6#
- 2.Qe5#
- 1...Qd5
- 2.Sg5#
- 1...Qa3
- 2.Sg5#
- 2.Qd4#
- 2.Qe5#
- 1...Qa4
- 2.Sg5#
- 2.Sd6#
- 2.Qe5#
- 1...Qa5
- 2.Sg5#
- 2.Sd6#
- 2.Qd4#
- 1...Ra4
- 2.Sg5#
- 2.Sd6#
- 2.Qe5#
- 1...Ra5
- 2.Sg5#
- 2.Sd6#
- 2.Qd4#
- 1...Rb7
- 2.Sg5#
- 2.Qd4#
- 2.Qe5#
- 1...Sb3
- 2.Sg5#
- 2.Sd6#
- 2.Qe5#
- 1...Sd3
- 2.Sg5#
- 2.Sd6#
- 2.Qd4#
- 1...e5
- 2.Sg5#
- 2.Sd6#
- 2.Qxe5#
- 1...d5
- 2.Sg5#
- 2.Qd4#
- 2.Qe5#
- 1...d6
- 2.Sg5#
- 2.Sxd6#
- 2.Qd4#
- 1...Sxe2!
- threat
- 1.Rg4+?
- 1...fxg4
- 2.Qg6#
- 1...f4
- 2.Rxf4#
- 1...hxg4!
- 1...fxg4
- 1.Sd3?
- Keys
- 1.Rxe6!
- threat
- 2.Qg2#
- 1...Qxd2
- 2.Sexd7#
- 1...dxe6
- 2.Rd4#
- 1...f4
- 2.Qg6#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Sec4#
- threat
- 1.Rxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- S(a);OGATE::P(B),XS(a)
- Tries
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- S(a);XS(E)::QAR1(H)
- P(d);::QAR1(H)
- Q(b);N_SPINR(f)::S(E)
- P(i);N_SPINR(f),P_PINQ(H)::S(E)
- P(i);P_PINQ(H)::S(E)
- Refutation
- S(a);XP(B)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(A)::QAR1(H)
- P(d);::QAR1(H)
- Q(b);N_SPINR(f)::S(E)
- P(i);N_SPINR(f),P_PINQ(H)::S(E)
- P(i);P_PINQ(H)::S(E)
- Refutation
- S(a);XP(B)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(b);XP(A)::QAR1(H)
- P(d);XS(E)::QAR1(H)
- P(d);::QAR1(H)
- Refutation
- S(a);XP(B)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(b);XP(A)::QAR1(H)
- Q(b);N_SPINR(f)::S(E)
- Refutation
- S(a);XP(B)
- Try
- R(G);CHECK
- Vars
- P(d);S_CUTP(e),XR(G)::QAB(H)
- P(d);P_SPINP(d)::R1(G),XP(d)
- Refutation
- P(e);XR(G)
- Try
- Actual
- R(G);XP(g)
- Threat
- QAB(H)
- Vars
- Q(b);N_GUARD,XP(A)::R(G)+S(E),XP(i)
- P(i);OGATE,P_PINQ(H),XR(G)::R1(K)
- P(d);OGATEB::QAB(H)
- P(i);N_GUARD,N_SPINR(f),P_PINQ(H),S_CUTQ(b)::R(G)+S(E),XR(f)
- P(i);N_GUARD,P_PINQ(H)::R(G)+S(E)
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).