MESON Chess Problem Database
Problem Display
PID: 276017 (2Nb1q2/3B4/1Pn1N1n1/3kBp1R/1p4p1/3PQ1P1/5K2/8 w - - 0 1)
Petkov, Petko Andonov
Buletin Problemistic, 1976
#2
10 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Qxc5#
- 1...Qh6
- 2.Qc5#
- 1...Qg7
- 2.Qc5#
- 1...Qf6
- 2.Qc5#
- 1...Qf7
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- 1...Qg8
- 2.Qc5#
- 1...Qh8
- 2.Qc5#
- 1...Bh4
- 2.Sc7#
- 1...Bg5
- 2.Sc7#
- 1...Bxb6
- 2.Sxb6#
- 1...Bf6
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Scxe5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sce7
- 2.Qd4#
- 2.Qc5#
- 1...Sb8
- 2.Qd4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sgxe5
- 2.Sf4#
- 1...Sge7
- 2.Sf4#
- 2.Qc5#
- 1...Sh8
- 2.Sf4#
- 1...f4
- 2.Qe4#
- 1...Qc5
- Tries
- 1.Se7+?
- 1...Bxe7
- 2.Sc7#
- 1...Scxe7
- 2.Qd4#
- 2.Qc5#
- 1...Sgxe7
- 2.Sf4#
- 2.Qc5#
- 1...Qxe7!
- 1...Bxe7
- 1.Ba1?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Bb2?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Bc3?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Bd4?
- threat
- 2.Qe4#
- 1...Bg5
- 2.Sc7#
- 1...Sge5
- 2.Sf4#
- 1...Sce5!
- threat
- 1.Bf4?
- threat
- 2.Qe4#
- 1...Bxb6
- 2.Sxb6#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5!
- threat
- 1.Bd6?
- threat
- 2.Qc5#
- 2.Qe4#
- 1...Qxd6
- 2.Qe4#
- 1...Bg5
- 2.Sc7#
- 2.Qc5#
- 1...Sd4
- 2.Qxd4#
- 2.Qe4#
- 1...Sce5
- 2.Qd4#
- 2.Qc5#
- 1...Sge5
- 2.Sf4#
- 2.Qc5#
- 1...Bxb6!
- threat
- 1.Bf6?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Bc7?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bg5!
- threat
- 1.Bg7?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Bh8?
- threat
- 2.Qe4#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- 1...Bxb6!
- threat
- 1.Rxf5?
- threat
- 2.Qe4#
- 1...Bxb6
- 2.Sxb6#
- 1...Qc5
- 2.Qxc5#
- 1...Qxf5+!
- threat
- 1.Se7+?
- Keys
- 1.Bb8!
- threat
- 2.Qe4#
- 1...Bxb6
- 2.Sxb6#
- 1...Qc5
- 2.Qxc5#
- 1...Bg5
- 2.Sc7#
- 1...Sce5
- 2.Qd4#
- 1...Sge5
- 2.Sf4#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 19
- Sets
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- Q(h);N_GUARD::QAR1(C)
- B(g);N_GUARD,P_PINP(D)::S(H)
- B(g);N_GUARD::S(H)
- B(g);P_PINQ(C),XP(G)::S(J),XB(g)
- B(g);N_GUARD::S(H),XB(g)
- S(e);N_GUARD::QAR1(C),XS(e)
- S(e);N_GUARD::QAR1(C)
- S(e);N_GUARD,XB(E)::QAR1(C)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- S(f);N_GUARD,XB(E)::S(H)
- P(d);N_GUARD::QAB1(C)
- Tries
- Try
- S(J);CHECK
- Vars
- B(g);XS(J)::S(H)
- Refutation
- Q(h);XS(J)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- S(e);N_SPINP(d)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- B(g);P_PINQ(C),XP(G)::S(J),XB(g)
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- Refutation
- S(f);N_SPINP(d)
- Try
- B(E);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- Q(h);XB(E)::QAB1(C)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);N_SPINP(d)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(H)
- Refutation
- B(g);P_PINQ(C),XP(G)
- Try
- R(F);P_SPINR(F),XP(d)
- Threat
- QAB1(C)
- Vars
- B(g);P_PINQ(C),XP(G)::S(J),XB(g)
- Q(h);N_GUARD,N_PINR(F),P_PINQ(C)::QAR1(C),XQ(h)
- Refutation
- Q(h);CHECK,XR(F)
- Try
- Actual
- B(E);P_PINP(d)
- Threat
- QAB1(C)
- Vars
- B(g);P_PINQ(C),XP(G)::S(J),XB(g)
- Q(h);N_GUARD,P_PINQ(C)::QAR1(C),XQ(h)
- B(g);N_GUARD,N_SPINP(d)::S(H)
- S(e);N_GUARD,N_SPINP(d)::QAR1(C)
- S(f);N_GUARD,N_SPINP(d)::S(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).