MESON Chess Problem Database
Problem Display
PID: 178129 (BB1QKN1n/rrP1pR2/1p2p3/4k3/3pN1P1/3P4/b3R2p/4q3 w - - 0 1)
Monteiro da Silveira, Jose Luis
4th Comm., Schach-Echo, 1936
#2
11 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Sxd2#
- 1...Qf2
- 2.Sxf2#
- 1...Qc3
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qg3
- 2.Sxg3#
- 1...Qb4
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qh4
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qa5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qa1
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qb1
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qc1
- 2.Sd2#
- 1...Qg1
- 2.Sf2#
- 1...Rxc7
- 2.Sd7#
- 1...Rxb8
- 2.Sd7#
- 1...Bd5
- 2.Sd7#
- 1...Sg6
- 2.Sxg6#
- 1...Sxf7
- 2.Sg6#
- 1...Qd2
- Tries
- 1.Bxb7?
- threat
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qxe2
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sxf7
- 2.Sg6#
- 1...h1Q
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...h1S
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...h1B
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...h1R
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qd2
- 2.Sxd2#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qf2
- 2.Sxf2#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qc3
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 1...Qg3
- 2.Sxg3#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qb4
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 1...Qh4
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa1
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qb1
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qc1
- 2.Sd2#
- 2.Sd7#
- 1...Qd1
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qf1
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qg1
- 2.Sf2#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qh1
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra3
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra4
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra5
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra6
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra8
- 2.Sd7#
- 1...Bb1
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Bb3
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Bc4
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Bd5
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sg6
- 2.Sxg6#
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...b5
- 2.Sd7#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rxb7!
- threat
- 1.Qd5+?
- 1...Bxd5
- 2.Sd7#
- 1...exd5
- 2.Rf5#
- 1...Kxd5!
- 1...Bxd5
- 1.c8Q+?
- 1...Rc7
- 2.Sd7#
- 1...Rxb8!
- 1...Rc7
- 1.c8S+?
- 1...Rc7
- 2.Sd7#
- 1...Rxb8!
- 1...Rc7
- 1.c8B+?
- 1...Rc7
- 2.Sd7#
- 1...Rxb8!
- 1...Rc7
- 1.c8R+?
- 1...Rc7
- 2.Sd7#
- 1...Rxb8!
- 1...Rc7
- 1.Bxb7?
- Keys
- 1.Kxe7!
- threat
- 2.Qd6#
- 1...Qb4+
- 2.Sc5#
- 1...Qh4+
- 2.Sg5#
- 1...Rxc7+
- 2.Sd7#
- 1...Sg6+
- 2.Sxg6#
- 1...Sxf7
- 2.Sg6#
- threat
- 1.Kxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::R(A)+S(C),XQ(a)
- Q(a);N_GUARD::R(A)+S(C)
- R(i);P_SPINR(i),XP(E)::S(K)
- R(i);P_PINQ(I),XB(H)::S(K)
- B(b);SBLOCK::S(K)
- S(k);N_GUARD::S(K),XS(k)
- S(k);N_GUARD,XR(F)::S(K)
- Tries
- Try
- B(G);XR(i)
- Threat
- DUALS(5)
- Vars
- S(k);N_GUARD,XR(F)::S(K)
- R(h);::S(K)
- Refutation
- R(h);XB(G)
- Try
- Q(I);CHECK
- Vars
- B(b);SBLOCK,XQ(I)::S(K)
- P(g);SBLOCK,XQ(I)::R1(F)
- Refutation
- K(e);P-FLIGHT,P_SPINR(i),XQ(I)
- Try
- P(E);CHECK
- Vars
- R(i);P_SPINR(i)::S(K)
- Refutation
- R(i);XB(H)
- Try
- P(E);CHECK
- Vars
- R(i);P_SPINR(i)::S(K)
- Refutation
- R(i);XB(H)
- Try
- P(E);CHECK
- Vars
- R(i);P_SPINR(i)::S(K)
- Refutation
- R(i);XB(H)
- Try
- P(E);CHECK
- Vars
- R(i);P_SPINR(i)::S(K)
- Refutation
- R(i);XB(H)
- Try
- Actual
- K(J);P-FLIGHT,P_SPINP(E),XP(j)
- Threat
- QAB1(I)
- Vars
- Q(a);CHECK,N_GUARD::R(A)+S(C)
- R(i);CHECK,P_SPINR(i),XP(E)::S(K)
- S(k);CHECK,N_GUARD::S(K),XS(k)
- S(k);N_GUARD,XR(F)::S(K)
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).