MESON Chess Problem Database
Problem Display
PID: 49881 (B7/n2N1pQn/3P1p2/B1PP3R/3k1P1K/NR1PpP1p/8/1b6 w - - 0 1)
Degener, Udo
2nd Comm., Probleemblad 149. TT, 1989-1990
#2
14 + 8
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Bxd3
- 2.Bc3#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...e2
- 2.Qg1#
- 1...Ba2
- Tries
- 1.Kxh3?
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sf8
- 2.Qxf6#
- 1...Sg5+!
- 1...Bxd3
- 1.Be1?
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Bf2#
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...h2!
- 1...Bxd3
- 1.Bd2?
- 1...Bxd3
- 2.Bc3#
- 1...exd2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...e2
- 2.Qg1#
- 1...h2!
- 1...Bxd3
- 1.Bb4?
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...h2!
- 1...Bxd3
- 1.Bc6?
- 1...Bxd3
- 2.Bc3#
- 1...Sxc6
- 2.Sb5#
- 1...e2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...h2!
- 1...Bxd3
- 1.Bb7?
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...h2!
- 1...Bxd3
- 1.Re5?
- threat
- 2.Re4#
- 1...Bxd3
- 2.Bc3#
- 1...fxe5
- 2.Qxe5#
- 1...Sc6
- 2.Sb5#
- 1...Sg5!
- threat
- 1.Rf5?
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Ba2
- 2.Sc2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...h2!
- 1...Bxd3
- 1.Rxh7?
- threat
- 2.Qxf6#
- 1...e2
- 2.Qg1#
- 1...Sc6!
- threat
- 1.Qg2?
- threat
- 2.Qb2#
- 1...e2
- 2.Qg1#
- 2.Qf2#
- 1...Bc2
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...hxg2!
- threat
- 1.Qg4?
- threat
- 2.f5#
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Sc6
- 2.Sb5#
- 1...Sg5
- 2.fxg5#
- 1...f5!
- threat
- 1.Qxh7?
- threat
- 2.Bc3#
- 2.Qe4#
- 1...Bxd3
- 2.Bc3#
- 2.Rxd3#
- 2.Qxd3#
- 1...e2
- 2.Qe4#
- 1...Sb5
- 2.Sxb5#
- 2.Qe4#
- 1...f5!
- threat
- 1.f5?
- threat
- 2.Qg4#
- 1...Bxd3
- 2.Bc3#
- 1...e2
- 2.Qg1#
- 1...Sg5
- 2.Qxf6#
- 1...Sc6!
- threat
- 1.c6?
- threat
- 2.Bb6#
- 1...Sc8
- 2.Sb5#
- 1...Sg5!
- threat
- 1.Kxh3?
- Keys
- 1.Bb6!
- threat
- 2.c6#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Sg5
- 2.Qxf6#
- threat
- 1.Bb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- B(a);SBLOCK,XP(C)::B(G)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- P(b);OGATEB::QAB(M)
- Tries
- Try
- K(F);P-FLIGHT,XP(c)
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- S(h);CHECK
- Try
- B(G);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- P(c);
- Try
- B(G);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB,XB(G)::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- P(b);OGATEB::QAB(M)
- Refutation
- P(c);
- Try
- B(G);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- P(c);
- Try
- B(N);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- S(f);N_GUARD,XB(N)::S(A)
- P(b);OGATEB::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- P(c);
- Try
- B(N);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- P(c);
- Try
- R(J);N_PINP(e)
- Threat
- R1(J)
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(e);OGATE,P_SPINP(e),XR(J)::QAB1(M),XP(e)
- S(f);N_GUARD::S(A)
- Refutation
- S(h);
- Try
- R(J);
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- P(c);
- Try
- R(J);XS(h)
- Threat
- QAB(M),XP(e)
- Vars
- P(b);OGATEB::QAB(M)
- Refutation
- S(f);
- Try
- Q(M);N_PINP(e)
- Threat
- QAB(M)
- Vars
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- Refutation
- P(c);XQ(M)
- Try
- Q(M);N_PINP(e)
- Threat
- QAR(M)+P(E)
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- S(f);N_GUARD::S(A)
- S(h);OGATE::QAR(M)+P(E),XS(h)
- Refutation
- P(e);
- Try
- Q(M);N_PINP(e),XS(h)
- Threat
- DUALS(2)
- Vars
- P(b);::QAR1(M)
- Refutation
- P(e);
- Try
- P(E);
- Threat
- QAR(M)
- Vars
- B(a);SBLOCK,XP(C)::B(G)
- P(b);OGATEB::QAB(M)
- S(h);N_GUARD::QAB(M),XP(e)
- Refutation
- S(f);
- Try
- P(H);
- Threat
- B(G)
- Vars
- S(f);N_GUARD::S(A)
- Refutation
- S(h);
- Try
- Actual
- B(G);
- Threat
- B(G)+P(H)
- Vars
- S(f);N_GUARD::S(A)
- S(h);N_GUARD::QAB(M),XP(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).