MESON Chess Problem Database
Problem Display
PID: 227185 (8/3p4/3B4/1K2n3/3k1p2/3n1B2/2Q2P2/8 w - - 0 1)
Otto, Max
Die Schwalbe, 1928
#2
5 + 5
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sxf2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sxf3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sc6
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...Sc1
- Tries
- 1.Bh1?
- 1...Sxf2
- 2.Bc5#
- 1...Sf3
- 2.Qc4#
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sc6
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...f3!
- 1...Sxf2
- 1.Bg2?
- 1...Sxf2
- 2.Bc5#
- 1...Sf3
- 2.Qc4#
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sc6
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...f3!
- 1...Sxf2
- 1.Bb7?
- 1...Sxf2
- 2.Bc5#
- 1...Sc6
- 2.Qc4#
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sf3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...f3!
- 1...Sxf2
- 1.Ba8?
- 1...Sxf2
- 2.Bc5#
- 1...Sc6
- 2.Qc4#
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sf3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...f3!
- 1...Sxf2
- 1.Bh1?
- Keys
- 1.Qb3!
- 1...Sxf2
- 2.Bc5#
- 1...Sxf3
- 2.Qc4#
- 1...Sc1
- 2.Bc5#
- 1...Se1
- 2.Bc5#
- 1...Sb2
- 2.Bc5#
- 1...Sb4
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sc6
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...Sxf2
- 1.Qb3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::B(E)
- S(a);N_GUARD,XP(B)::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD,XB(C)::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(d);N_GUARD::QAR1(A)
- Tries
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(E)
- S(d);N_GUARD::QAR1(A)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(E)
- S(d);N_GUARD::QAR1(A)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(E)
- S(d);N_GUARD::QAR1(A)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(E)
- S(d);N_GUARD::QAR1(A)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(c);
- Try
- Actual
- Q(A);
- Vars
- S(a);N_GUARD,XP(B)::B(E)
- S(d);N_GUARD,XB(C)::QAR1(A)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(d);N_GUARD::QAR1(A)
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).