MESON Chess Problem Database
Problem Display
PID: 34800 (8/B1p5/RnP5/1P3R2/pk2nNpQ/4p3/1PK1B3/8 w - - 0 1)
Brehmer, Siegfried
Schach-Express, 1948
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Qe7#
- 1...Sf2
- 2.Qe7#
- 1...Sc3
- 2.Qe7#
- 1...Sg3
- 2.Qe7#
- 1...Sc5
- 2.Qe1#
- 1...Sg5
- 2.Qe1#
- 1...Sd6
- 2.Qe1#
- 1...Sf6
- 2.Qe1#
- 1...Sc4
- 2.Sd3#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...a3
- 2.bxa3#
- 1...Sd2
- Tries
- 1.Bxb6?
- threat
- 2.Sd5#
- 2.Ba5#
- 1...Sc3
- 2.Ba5#
- 2.Bc5#
- 2.Qe7#
- 1...Sf6
- 2.Ba5#
- 2.Bc5#
- 2.Qe1#
- 1...a3
- 2.Sd5#
- 2.bxa3#
- 1...cxb6!
- threat
- 1.Rd5?
- 1...Sxd5
- 2.Sxd5#
- 1...Sc4
- 2.Sd3#
- 1...Sd2
- 2.Qe7#
- 1...Sf2
- 2.Qe7#
- 1...Sc3
- 2.Qe7#
- 1...Sg3
- 2.Qe7#
- 1...Sc5
- 2.Qe1#
- 1...Sg5
- 2.Qe1#
- 1...Sd6
- 2.Qe1#
- 1...Sf6
- 2.Qe1#
- 1...Sd7
- 2.Rd4#
- 1...Sa8
- 2.Rd4#
- 1...Sc8
- 2.Rd4#
- 1...a3
- 2.bxa3#
- 1...g3!
- 1...Sxd5
- 1.Re5?
- 1...Sc4
- 2.Sd3#
- 1...Sd2
- 2.Qe7#
- 1...Sf2
- 2.Qe7#
- 1...Sc3
- 2.Qe7#
- 1...Sg3
- 2.Qe7#
- 1...Sc5
- 2.Qe1#
- 1...Sg5
- 2.Qe1#
- 1...Sd6
- 2.Qe1#
- 1...Sf6
- 2.Qe1#
- 1...Sd5
- 2.Sxd5#
- 2.Rxe4#
- 1...Sd7
- 2.Sd5#
- 2.Rxe4#
- 1...Sa8
- 2.Sd5#
- 2.Rxe4#
- 1...Sc8
- 2.Sd5#
- 2.Rxe4#
- 1...a3
- 2.bxa3#
- 1...g3!
- 1...Sc4
- 1.Qe1+?
- 1...Sc3
- 2.Qxc3#
- 1...Sd2!
- 1...Sc3
- 1.Qe7+?
- 1...Sc5
- 2.Qxc5#
- 1...Sd6!
- 1...Sc5
- 1.Qh8?
- 1...Sd2
- 2.Qc3#
- 2.Qf8#
- 1...Sf2
- 2.Qc3#
- 2.Qf8#
- 1...Sc3
- 2.Qxc3#
- 2.Qf8#
- 1...Sg3
- 2.Qc3#
- 2.Qf8#
- 1...Sc5
- 2.Qc3#
- 1...Sg5
- 2.Qc3#
- 2.Qf8#
- 1...Sd6
- 2.Qc3#
- 1...Sf6
- 2.Qf8#
- 1...Sc4
- 2.Sd3#
- 1...Sd5
- 2.Sxd5#
- 2.Qd4#
- 1...Sd7
- 2.Sd5#
- 2.Qd4#
- 1...Sa8
- 2.Sd5#
- 2.Qd4#
- 1...Sc8
- 2.Sd5#
- 2.Qd4#
- 1...a3
- 2.bxa3#
- 1...g3!
- 1...Sd2
- 1.Bxb6?
- Keys
- 1.Qxg4!
- 1...Sc4
- 2.Sd3#
- 1...Sd2
- 2.Sd3#
- 1...Sf2
- 2.Sd3#
- 1...Sc3
- 2.Sd3#
- 1...Sg3
- 2.Sd3#
- 1...Sc5
- 2.Sd5#
- 1...Sg5
- 2.Sd3#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Sd3#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...a3
- 2.bxa3#
- 1...Sc4
- 1.Qxg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::QAB(E)
- S(f);SBLOCK::S(D)
- S(f);N_GUARD::S(D),XS(f)
- S(f);N_GUARD::S(D)
- P(b);OGATE::P(A),XP(b)
- Tries
- Try
- B(J);XS(f)
- Threat
- DUALS(2)
- Refutation
- P(g);XB(J)
- Try
- R(G);
- Vars
- S(f);XR(G)::S(D),XS(f)
- S(f);SBLOCK::S(D)
- S(d);N_GUARD::QAB(E)
- S(f);N_GUARD::R(G)
- P(b);OGATE::P(A),XP(b)
- Refutation
- P(e);
- Try
- R(G);
- Vars
- S(f);SBLOCK::S(D)
- S(d);N_GUARD::QAB(E)
- P(b);OGATE::P(A),XP(b)
- Refutation
- P(e);
- Try
- Q(E);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(E),XS(d)
- Refutation
- S(d);P_SPINS(d)
- Try
- Q(E);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(E),XS(d)
- Refutation
- S(d);P_SPINS(d)
- Try
- Q(E);
- Vars
- S(d);N_GUARD::QAB1(E)
- S(d);N_GUARD::QAB(E)
- S(f);SBLOCK::S(D)
- P(b);OGATE::P(A),XP(b)
- Refutation
- P(e);
- Try
- Actual
- Q(E);XP(e)
- Vars
- S(f);SBLOCK::S(D)
- S(d);::QAR(E)+S(D),DCHECK
- S(d);SBLOCK::QAR(E)+S(D),DCHECK
- S(f);N_GUARD::S(D),XS(f)
- S(f);N_GUARD::S(D)
- P(b);OGATE::P(A),XP(b)
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).