MESON Chess Problem Database
Problem Display
PID: 261281 (b5BK/3Np3/Q7/p4p2/r3kPP1/qpP1BpPn/3P4/4nR1N w - - 0 1)
Kupper, Josef
Neue Zurcher Zeitung, 1982
#2
12 + 11
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sc5#
- 1...Qb2
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qa1
- 2.Sc5#
- 1...Qa2
- 2.Sc5#
- 1...Rb4
- 2.Sc5#
- 1...Rc4
- 2.Qxc4#
- 1...Sd3
- 2.Qxa8#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sxf4
- 2.Sf2#
- 1...Sg5
- 2.Sf2#
- 1...fxg4
- 2.Qg6#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Qc1
- Tries
- 1.Bd4?
- threat
- 2.Rxe1#
- 1...Sxf4
- 2.Sf2#
- 1...fxg4
- 2.Qg6#
- 1...f2
- 2.Qe2#
- 1...e6
- 2.Sf6#
- 1...Qc1
- 2.Sc5#
- 1...Qa1
- 2.Sc5#
- 1...Sc2
- 2.d3#
- 1...Sg2
- 2.d3#
- 1...Sd3
- 2.Qxa8#
- 1...Sg1
- 2.Sf2#
- 1...Rc4!
- threat
- 1.Bb6?
- threat
- 2.Rxe1#
- 1...Sxf4
- 2.Sf2#
- 1...Rc4
- 2.Qxc4#
- 1...f2
- 2.Qe2#
- 1...e6
- 2.Sf6#
- 1...Qc1
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qa1
- 2.Sc5#
- 1...Sc2
- 2.d3#
- 1...Sg2
- 2.d3#
- 1...Sd3
- 2.Qxa8#
- 1...Sg1
- 2.Sf2#
- 1...fxg4!
- threat
- 1.Ba7?
- threat
- 2.Rxe1#
- 1...Sxf4
- 2.Sf2#
- 1...fxg4
- 2.Qg6#
- 1...Rc4
- 2.Qxc4#
- 1...f2
- 2.Qe2#
- 1...e6
- 2.Sf6#
- 1...Qc1
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qa1
- 2.Sc5#
- 1...Sc2
- 2.d3#
- 1...Sg2
- 2.d3#
- 1...Sg1
- 2.Sf2#
- 1...Sd3!
- threat
- 1.Rxe1?
- threat
- 2.Bg1#
- 2.Bf2#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 2.d3#
- 1...Sxf4
- 2.Sf2#
- 2.Bxf4#
- 1...fxg4
- 2.Qg6#
- 1...Rc4
- 2.Qxc4#
- 1...e6
- 2.Sf6#
- 1...Qc1
- 2.Sc5#
- 2.d3#
- 1...Qc5
- 2.Sxc5#
- 2.Bd4#
- 2.Bxc5#
- 2.d3#
- 1...Qd6
- 2.Bg1#
- 2.Bf2#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 1...Qa1
- 2.Sc5#
- 2.d3#
- 1...Rd4
- 2.Bg1#
- 2.Bf2#
- 2.Bxd4#
- 1...Sg1
- 2.Sf2#
- 2.Bxg1#
- 2.d3#
- 1...Sf2
- 2.Sxf2#
- 2.Bxf2#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 1...f2!
- threat
- 1.Qb5?
- threat
- 2.Qxf5#
- 1...fxg4
- 2.Bh7#
- 1...Qc5
- 2.Sxc5#
- 1...Bd5
- 2.Bxd5#
- 2.Qxd5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...f2!
- threat
- 1.Bd4?
- Keys
- 1.Bg1!
- threat
- 2.Rxe1#
- 1...Sxg1
- 2.Sf2#
- 1...Sxf4
- 2.Sf2#
- 1...fxg4
- 2.Qg6#
- 1...Rc4
- 2.Qxc4#
- 1...f2
- 2.Qe2#
- 1...e6
- 2.Sf6#
- 1...Qc1
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qa1
- 2.Sc5#
- 1...Sc2
- 2.d3#
- 1...Sg2
- 2.d3#
- 1...Sd3
- 2.Qxa8#
- threat
- 1.Bg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD,P_PINP(D)::S(J)
- Q(b);N_GUARD::S(J),XQ(b)
- R(f);S_CUTQ(b)::S(J)
- R(f);N_GUARD::QAR2(I),XR(f)
- S(a);SBLOCK::QAB(I),XB(k)
- S(e);N_GUARD::S(B)
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD,XP(G)::S(B)
- P(i);OGATEB,XP(H)::QAB(I)
- P(j);N_GUARD::S(J)
- Tries
- Try
- B(E);
- Threat
- R(A),XS(a)
- Vars
- S(e);N_GUARD,XP(G)::S(B)
- P(i);OGATEB,XP(H)::QAB(I)
- P(d);N_GUARD::QAR2(I)
- P(j);N_GUARD::S(J)
- Q(b);N_GUARD::S(J)
- S(a);N_GUARD::P(C)
- S(a);SBLOCK::QAB(I),XB(k)
- S(e);N_GUARD::S(B)
- Refutation
- R(f);
- Try
- B(E);
- Threat
- R(A),XS(a)
- Vars
- S(e);N_GUARD,XP(G)::S(B)
- R(f);N_GUARD::QAR2(I),XR(f)
- P(d);N_GUARD::QAR2(I)
- P(j);N_GUARD::S(J)
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,P_PINP(D)::S(J)
- S(a);N_GUARD::P(C)
- S(a);SBLOCK::QAB(I),XB(k)
- S(e);N_GUARD::S(B)
- Refutation
- P(i);XP(H)
- Try
- B(E);
- Threat
- R(A),XS(a)
- Vars
- S(e);N_GUARD,XP(G)::S(B)
- P(i);OGATEB,XP(H)::QAB(I)
- R(f);N_GUARD::QAR2(I),XR(f)
- P(d);N_GUARD::QAR2(I)
- P(j);N_GUARD::S(J)
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,P_PINP(D)::S(J)
- S(a);N_GUARD::P(C)
- S(e);N_GUARD::S(B)
- Refutation
- S(a);
- Try
- R(A);XS(a)
- Threat
- DUALS(7)
- Vars
- P(i);OGATEB,XP(H)::QAB(I)
- R(f);N_GUARD::QAR2(I),XR(f)
- P(j);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- Q(I);
- Threat
- QAB1(I),XP(i)
- Vars
- P(i);OGATEB,XP(H)::B(K)
- Q(b);N_GUARD::S(J),XQ(b)
- P(j);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- Actual
- B(E);
- Threat
- R(A),XS(a)
- Vars
- S(e);N_GUARD,XB(E)::S(B)
- S(e);N_GUARD,XP(G)::S(B)
- P(i);OGATEB,XP(H)::QAB(I)
- R(f);N_GUARD::QAR2(I),XR(f)
- P(d);N_GUARD::QAR2(I)
- P(j);N_GUARD::S(J)
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,P_PINP(D)::S(J)
- S(a);N_GUARD::P(C)
- S(a);SBLOCK::QAB(I),XB(k)
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).