MESON Chess Problem Database
Problem Display
PID: 233808 (n7/2PQp1K1/6nP/1r2k1BR/q3P3/2P1R3/3N2bb/r7 w - - 0 1)
Zipf, Volker
Freie Presse, 1979
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sc4#
- 1...Qc2
- 2.Sc4#
- 1...Qa3
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 1...Qd4
- 2.cxd4#
- 1...Qxe4
- 2.Sc4#
- 1...Qa5
- 2.Sc4#
- 1...Qa6
- 2.Sc4#
- 1...Qa7
- 2.Sc4#
- 1...Rb1
- 2.Qd5#
- 1...Rb2
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rb4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 1...Rb6
- 2.Qd5#
- 1...Rb7
- 2.Qd5#
- 1...Rb8
- 2.Qd5#
- 1...Bf1
- 2.Sf3#
- 1...Bf3
- 2.Sxf3#
- 1...Bh3
- 2.Sf3#
- 1...Bxe4
- 2.Sf3#
- 1...Bf4
- 2.Bf6#
- 1...Sf4
- 2.Bf6#
- 1...Sh4
- 2.Qxe7#
- 1...Sh8
- 2.Qxe7#
- 1...Qd1
- Tries
- 1.Re2?
- threat
- 2.Be3#
- 1...Qxe4
- 2.Sc4#
- 1...Bxe4
- 2.Sf3#
- 1...Bf3
- 2.Sxf3#
- 1...Bh3
- 2.Sf3#
- 1...Bf4
- 2.Bf6#
- 1...Sf4
- 2.Bf6#
- 1...Sh4
- 2.Qxe7#
- 1...Rf1!
- threat
- 1.Rf3?
- threat
- 2.Be3#
- 2.Bf4#
- 2.Bh4#
- 2.Bf6#
- 2.Bxe7#
- 2.Rf5#
- 1...Qxe4
- 2.Bf4#
- 2.Bf6#
- 1...Rf1
- 2.Be3#
- 2.Bf4#
- 2.Bh4#
- 2.Bf6#
- 2.Bxe7#
- 1...Bh3
- 2.Bf4#
- 2.Bf6#
- 1...Bf4
- 2.Bxf4#
- 2.Bf6#
- 1...Sf4
- 2.Bxf4#
- 2.Bf6#
- 1...Sh4
- 2.Bf4#
- 2.Bxh4#
- 2.Bf6#
- 2.Qxe7#
- 1...e6
- 2.Be3#
- 2.Bf4#
- 2.Bh4#
- 2.Bf6#
- 2.Be7#
- 2.Bd8#
- 1...Bxf3!
- threat
- 1.Qg4?
- threat
- 2.Bf4#
- 2.Bxe7#
- 1...Rf1
- 2.Bf4#
- 1...Bf4
- 2.Bxf4#
- 1...Sf4
- 2.Bxf4#
- 1...Sh4
- 2.Bf4#
- 1...e6
- 2.Bf4#
- 2.Be7#
- 1...Kd6!
- threat
- 1.Qd4+?
- 1...Ke6
- 2.c8Q#
- 2.c8B#
- 1...Qxd4!
- 1...Ke6
- 1.h7?
- threat
- 2.Bh6#
- 1...Qd1
- 2.Sc4#
- 1...Bf3
- 2.Sxf3#
- 1...Bh3
- 2.Sf3#
- 1...Bf4
- 2.Bf6#
- 1...Sf4
- 2.Bf6#
- 1...Sh4
- 2.Qxe7#
- 1...Rf1!
- threat
- 1.c8Q?
- threat
- 2.Qe6#
- 1...Qb3
- 2.Qd4#
- 1...Qa2
- 2.Qd4#
- 1...Qc4
- 2.Sxc4#
- 1...Qa6
- 2.Sc4#
- 2.Qd4#
- 1...Rb6
- 2.Qd5#
- 2.Qc5#
- 1...Bh3
- 2.Sf3#
- 1...Sf4
- 2.Bf6#
- 1...Sc7
- 2.Qdxc7#
- 2.Qcxc7#
- 1...e6
- 2.Qxe6#
- 1...Sf8!
- threat
- 1.c8S?
- threat
- 2.Qf5#
- 1...Qxe4
- 2.Sc4#
- 1...Bxe4
- 2.Sf3#
- 1...Bh3
- 2.Sf3#
- 1...Sh4
- 2.Qxe7#
- 1...e6
- 2.Qd6#
- 1...Rf1!
- threat
- 1.c8B?
- threat
- 2.Qe6#
- 1...Qb3
- 2.Qd4#
- 1...Qa2
- 2.Qd4#
- 1...Qc4
- 2.Sxc4#
- 1...Qa6
- 2.Sc4#
- 2.Qd4#
- 1...Rb6
- 2.Qd5#
- 1...Bh3
- 2.Sf3#
- 1...Sf4
- 2.Bf6#
- 1...Sc7
- 2.Qxc7#
- 1...e6
- 2.Qxe6#
- 1...Sf8!
- threat
- 1.Re2?
- Keys
- 1.Re1!
- threat
- 2.Be3#
- 1...Qxe4
- 2.Sc4#
- 1...Bxe4
- 2.Sf3#
- 1...Qd1
- 2.Sc4#
- 1...Bf3
- 2.Sxf3#
- 1...Bh3
- 2.Sf3#
- 1...Bf4
- 2.Bf6#
- 1...Sf4
- 2.Bf6#
- 1...Sh4
- 2.Qxe7#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 17
- Sets
- Q(d);N_GUARD::S(A)
- Q(d);N_GUARD::S(A),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD,P_SPINQ(d),XP(D)::S(A)
- R(e);N_GUARD::QAR1(I)
- R(e);N_GUARD::QAR1(I),XR(e)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);N_GUARD,P_SPINB(b),XP(D)::S(A)
- B(c);SBLOCK::R(F)+B(E),DCHECK
- S(g);SBLOCK::R(F)+B(E),DCHECK
- S(g);N_GUARD::QAR2(I),XP(h)
- Tries
- Try
- R(C);
- Threat
- R(F)+B(E)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(D)::S(A)
- B(b);N_GUARD,P_SPINB(b),XP(D)::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);N_GUARD::S(A)
- B(c);SBLOCK::R(F)+B(E),DCHECK
- S(g);SBLOCK::R(F)+B(E),DCHECK
- S(g);N_GUARD::QAR2(I),XP(h)
- Refutation
- R(a);
- Try
- R(C);
- Threat
- DUALS(6)
- Refutation
- B(b);XR(C)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(a);::R(F)+B(E),DCHECK
- B(c);::R(F)+B(E),DCHECK,XB(c)
- S(g);::R(F)+B(E),DCHECK,XS(g)
- S(g);::R(F)+B(E),DCHECK
- Refutation
- K(f);S_FLIGHT
- Try
- Q(I);CHECK
- Vars
- K(f);P-FLIGHT::P=Q
- Refutation
- Q(d);XQ(I)
- Try
- P(G);
- Threat
- R(F)+B(E)
- Vars
- Q(d);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);N_GUARD::S(A)
- B(c);SBLOCK::R(F)+B(E),DCHECK
- S(g);SBLOCK::R(F)+B(E),DCHECK
- S(g);N_GUARD::QAR2(I),XP(h)
- Refutation
- R(a);
- Try
- P(H);
- Threat
- QAR1(I)
- Vars
- Q(d);N_GUARD::QAB1(I)
- Q(d);N_GUARD::S(A),XQ(d)
- B(b);N_GUARD::S(A)
- S(g);SBLOCK::R(F)+B(E),DCHECK
- P(h);::QAR1(I),XP(h)
- Refutation
- S(g);
- Try
- P(H);
- Threat
- QAR1(I)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(D)::S(A)
- B(b);N_GUARD,P_SPINB(b),XP(D)::S(A)
- B(b);N_GUARD::S(A)
- S(g);N_GUARD::QAR2(I),XP(h)
- P(h);N_GUARD::QAB1(I)
- Refutation
- R(a);
- Try
- P(H);
- Threat
- QAR1(I)
- Vars
- Q(d);N_GUARD::QAB1(I)
- Q(d);N_GUARD::S(A),XQ(d)
- R(e);N_GUARD::QAR1(I)
- B(b);N_GUARD::S(A)
- S(g);SBLOCK::R(F)+B(E),DCHECK
- S(i);N_GUARD::QAB(I),XS(i)
- P(h);::QAR1(I),XP(h)
- Refutation
- S(g);
- Try
- Actual
- R(C);
- Threat
- R(F)+B(E)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(D)::S(A)
- B(b);N_GUARD,P_SPINB(b),XP(D)::S(A)
- Q(d);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);N_GUARD::S(A)
- B(c);SBLOCK::R(F)+B(E),DCHECK
- S(g);SBLOCK::R(F)+B(E),DCHECK
- S(g);N_GUARD::QAR2(I),XP(h)
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).