MESON Chess Problem Database
Problem Display
PID: 84375 (8/Q5B1/n2P4/2n1b3/N2k1N2/1P1p1K2/3P4/8 w - - 0 1)
Brown, Bertram Goulding
Probleemblad, 1958
#2
8 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf6
- 2.Bxf6#
- 1...Bxg7
- 2.Qxg7#
- 1...Sb4
- 2.Qxc5#
- 1...Sc7
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Bf6
- Tries
- 1.Sc3?
- threat
- 2.Sb5#
- 2.Se6#
- 1...Bxg7
- 2.Qxg7#
- 1...Bf6
- 2.Bxf6#
- 1...Sc7!
- threat
- 1.Sxc5?
- threat
- 2.Sxa6#
- 2.Sce6#
- 1...Sxc5
- 2.Qa1#
- 1...Bf6
- 2.Bxf6#
- 1...Sc7
- 2.Scxd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Sce6#
- 2.Sb7#
- 2.Sd7#
- 1...Sb4
- 2.Scxd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Sce6#
- 2.Sb7#
- 2.Sd7#
- 1...Sb8
- 2.Scxd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Sce6#
- 2.Sb7#
- 2.Sd7#
- 1...Bxg7!
- threat
- 1.Bf6?
- 1...Sc7
- 2.Qxc5#
- 1...Sb4
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Bxf6!
- 1...Sc7
- 1.Bh8?
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Bxg7#
- 2.Qxg7#
- 1...Sc7
- 2.Qxc5#
- 1...Sb4
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Bxh8!
- 1...Bf6
- 1.Qb6?
- 1...Bf6
- 2.Bxf6#
- 1...Sc7
- 2.Qxc5#
- 2.Qb4#
- 1...Sb4
- 2.Qxc5#
- 2.Qxb4#
- 1...Sb8
- 2.Qxc5#
- 2.Qb4#
- 1...Bxg7!
- 1...Bf6
- 1.Qb7?
- threat
- 2.Qd5#
- 1...Sc7
- 2.Qb4#
- 1...Sb4
- 2.Qxb4#
- 1...Sxb7!
- threat
- 1.Qc7?
- 1...Bxg7
- 2.Qxg7#
- 1...Sxb3
- 2.Qc3#
- 1...Sxa4
- 2.Qc4#
- 1...Bf6
- 2.Bxf6#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qc3#
- 2.Qc4#
- 1...Sb7
- 2.Qc3#
- 2.Qc4#
- 1...Sd7
- 2.Qc3#
- 2.Qc4#
- 1...Sb4
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Sxc7!
- 1...Bxg7
- 1.Qf7?
- threat
- 2.Qc4#
- 2.Qd5#
- 1...Bxg7
- 2.Qd5#
- 2.Qxg7#
- 1...Sxb3
- 2.Qd5#
- 1...Bf6
- 2.Bxf6#
- 2.Qd5#
- 2.Qxf6#
- 1...Sc7
- 2.Qc4#
- 1...Sb4
- 2.Qc4#
- 1...Se6!
- threat
- 1.d7?
- threat
- 2.d8Q#
- 2.d8R#
- 1...Bf6
- 2.Bxf6#
- 1...Sc7
- 2.Qxc5#
- 1...Sb4
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Bxg7!
- threat
- 1.Sc3?
- Keys
- 1.Sb6!
- 1...Bxg7
- 2.Qxg7#
- 1...Sxb3
- 2.Se6#
- 1...Bf6
- 2.Bxf6#
- 1...Sa4
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 1...Sc7
- 2.Qa1#
- 1...Sb4
- 2.Qa1#
- 1...Sb8
- 2.Qa1#
- 1...Bxg7
- 1.Sb6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(d);OGATEB::B(H),XB(d)
- B(d);N_SPINB(d),OGATE,XB(H)::QAB(G),XB(d)
- S(e);N_GUARD::QAB1(G),XS(c)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(d);N_SPINB(d),OGATE,XB(H)::QAB(G),XB(d)
- B(d);OGATEB::B(H),XB(d)
- Refutation
- S(e);
- Try
- S(D);XS(c)
- Threat
- DUALS(2)
- Vars
- S(e);OGATE,P_SPINS(e),SBLOCK,XS(D)::QAB(G)
- B(d);OGATEB::B(H),XB(d)
- Refutation
- B(d);N_SPINB(d),XB(H)
- Try
- B(H);
- Vars
- S(e);N_GUARD::QAB1(G),XS(c)
- Refutation
- B(d);N_SPINB(d),XB(H)
- Try
- B(H);
- Vars
- B(d);OGATEB::B(H),XB(d)
- S(e);N_GUARD::QAB1(G),XS(c)
- Refutation
- B(d);N_SPINB(d),XB(H)
- Try
- Q(G);
- Vars
- B(d);OGATEB::B(H),XB(d)
- Refutation
- B(d);N_SPINB(d),XB(H)
- Try
- Q(G);N_PINS(c)
- Threat
- QAR1(G)
- Vars
- S(e);N_GUARD::QAR2(G)
- S(e);N_GUARD::QAR2(G),XS(e)
- Refutation
- S(c);XQ(G)
- Try
- Q(G);N_PINS(c)
- Vars
- B(d);N_SPINB(d),OGATE,XB(H)::QAB(G),XB(d)
- S(c);OGATE,XP(B)::QAB1(G)
- S(c);OGATE,XS(D)::QAR1(G)
- B(d);OGATEB::B(H),XB(d)
- S(c);OGATE::QAR1(G)
- S(e);N_GUARD::QAB1(G),XS(c)
- Refutation
- S(e);XQ(G)
- Try
- Q(G);N_PINS(c)
- Threat
- DUALS(2)
- Vars
- S(c);XP(B)::QAR1(G)
- S(e);::QAR1(G)
- Refutation
- S(c);
- Try
- P(F);
- Threat
- P=Q
- Vars
- B(d);OGATEB::B(H),XB(d)
- S(e);N_GUARD::QAB1(G),XS(c)
- Refutation
- B(d);N_SPINB(d),XB(H)
- Try
- Actual
- S(D);N_PINS(c)
- Vars
- B(d);N_SPINB(d),OGATE,XB(H)::QAB(G),XB(d)
- S(c);N_GUARD,XP(B)::S(E)
- B(d);OGATEB::B(H),XB(d)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- S(e);OGATE::QAB(G)
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).