MESON Chess Problem Database
Problem Display
PID: 21906 (rrk5/1N4R1/n2BKP1p/n1pN2P1/4B3/bb5Q/1qp5/8 w - - 0 1)
Mendes de Moraes Filho, Feliciano
2nd Prize, Brisbane Courier, 1922
#2
9 + 11
| 35 | L'Italia Scacchistica | 1930 |
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 133 | The Problemist Supplement | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Ke5#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxf6+
- 2.Kxf6#
- 1...Qb1
- 2.Ke5#
- 1...Qa2
- 2.Ke5#
- 1...Rxb7
- 2.Rg8#
- 1...Ba4
- 2.Se7#
- 1...Bxd5+
- 2.Kxd5#
- 1...Sc4
- 2.Se7#
- 1...Sxb7
- 2.Ke7#
- 1...Sb4
- 2.Rc7#
- 1...Sc7+
- 2.Rxc7#
- 1...c4
- 2.Sb6#
- 2.Se7#
- 1...hxg5
- 2.Qh8#
- 1...Qc1
- Tries
- 1.Bh2?
- threat
- 2.Kd6#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxf6+
- 2.Kxf6#
- 1...Bxd5+
- 2.Kxd5#
- 1...Sc7+
- 2.Rxc7#
- 1...Rxb7
- 2.Rg8#
- 1...Sxb7
- 2.Ke7#
- 1...hxg5
- 2.Qh8#
- 1...Ba4
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 1...c4
- 2.Sb6#
- 1...Qc3!
- threat
- 1.Bf4?
- threat
- 2.Kd6#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxf6+
- 2.Kxf6#
- 1...Bxd5+
- 2.Kxd5#
- 1...Sc7+
- 2.Rxc7#
- 1...Rxb7
- 2.Rg8#
- 1...Sxb7
- 2.Ke7#
- 1...hxg5
- 2.Qh8#
- 1...Ba4
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 1...c4
- 2.Sb6#
- 1...Qc3!
- threat
- 1.Be5?
- threat
- 2.Kd6#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxd5+
- 2.Kxd5#
- 1...Sc7+
- 2.Rxc7#
- 1...Rxb7
- 2.Rg8#
- 1...Sxb7
- 2.Ke7#
- 1...hxg5
- 2.Qh8#
- 1...Ba4
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 1...c4
- 2.Sb6#
- 1...Qc3!
- threat
- 1.Bh2?
- Keys
- 1.Bg3!
- threat
- 2.Kd6#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxf6+
- 2.Kxf6#
- 1...Bxd5+
- 2.Kxd5#
- 1...Sc7+
- 2.Rxc7#
- 1...Rxb7
- 2.Rg8#
- 1...Sxb7
- 2.Ke7#
- 1...hxg5
- 2.Qh8#
- 1...Ba4
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 1...c4
- 2.Sb6#
- threat
- 1.Bg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(a);::QAB(A)+K(F)
- Q(a);CHECK::QAB(A)+K(F),XQ(a)
- Q(a);CHECK,XP(G)::QAB(A)+K(F),XQ(a)
- R(j);SBLOCK,XS(H)::R(I)
- B(d);N_PINS(C)::S(C)
- B(d);CHECK,XS(C)::QAB(A)+K(F),XB(d)
- S(e);N_PINS(C)::S(C)
- S(e);SBLOCK,XS(H)::QAB(A)+K(F)
- S(g);N_GUARD::R1(I)
- S(g);CHECK,N_GUARD::R1(I),XS(g)
- P(h);OGATE,XP(D)::QAR(A)
- Tries
- Try
- B(E);
- Threat
- QAB(A)+K(F)
- Vars
- Q(a);CHECK::QAB(A)+K(F),XQ(a)
- Q(a);CHECK,XP(G)::QAB(A)+K(F),XQ(a)
- B(d);CHECK,XS(C)::QAB(A)+K(F),XB(d)
- S(g);CHECK,N_GUARD::R1(I),XS(g)
- R(j);SBLOCK,XS(H)::R(I)
- S(e);SBLOCK,XS(H)::QAB(A)+K(F)
- P(h);OGATE,XP(D)::QAR(A)
- B(d);N_PINS(C)::S(C)
- S(e);N_PINS(C)::S(C)
- P(f);N_PINS(C)::S(C)
- Refutation
- Q(a);
- Try
- B(E);
- Threat
- QAB(A)+K(F)
- Vars
- Q(a);CHECK::QAB(A)+K(F),XQ(a)
- Q(a);CHECK,XP(G)::QAB(A)+K(F),XQ(a)
- B(d);CHECK,XS(C)::QAB(A)+K(F),XB(d)
- S(g);CHECK,N_GUARD::R1(I),XS(g)
- R(j);SBLOCK,XS(H)::R(I)
- S(e);SBLOCK,XS(H)::QAB(A)+K(F)
- P(h);OGATE,XP(D)::QAR(A)
- B(d);N_PINS(C)::S(C)
- S(e);N_PINS(C)::S(C)
- P(f);N_PINS(C)::S(C)
- Refutation
- Q(a);
- Try
- B(E);
- Threat
- QAB(A)+K(F)
- Vars
- Q(a);CHECK,XB(E)::QAB(A)+K(F),XQ(a)
- B(d);CHECK,XS(C)::QAB(A)+K(F),XB(d)
- S(g);CHECK,N_GUARD::R1(I),XS(g)
- R(j);SBLOCK,XS(H)::R(I)
- S(e);SBLOCK,XS(H)::QAB(A)+K(F)
- P(h);OGATE,XP(D)::QAR(A)
- B(d);N_PINS(C)::S(C)
- S(e);N_PINS(C)::S(C)
- P(f);N_PINS(C)::S(C)
- Refutation
- Q(a);
- Try
- Actual
- B(E);
- Threat
- QAB(A)+K(F)
- Vars
- Q(a);CHECK::QAB(A)+K(F),XQ(a)
- Q(a);CHECK,XP(G)::QAB(A)+K(F),XQ(a)
- B(d);CHECK,XS(C)::QAB(A)+K(F),XB(d)
- S(g);CHECK,N_GUARD::R1(I),XS(g)
- R(j);SBLOCK,XS(H)::R(I)
- S(e);SBLOCK,XS(H)::QAB(A)+K(F)
- P(h);OGATE,XP(D)::QAR(A)
- B(d);N_PINS(C)::S(C)
- S(e);N_PINS(C)::S(C)
- P(f);N_PINS(C)::S(C)
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).