MESON Chess Problem Database
Problem Display
PID: 42836 (K2N2nr/2p2r2/3k4/3N2B1/1P3PB1/3n1Q2/8/5b2 w - - 0 1)
Krumm, Hans Christoph Heinz Otto
Die Schwalbe, 1972
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...c6
- 2.Sxf7#
- 1...c6
- Tries
- 1.Se7?
- threat
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Rxf4
- 2.Qd5#
- 1...Rxe7
- 2.Sb7#
- 2.Qc6#
- 1...Sxb4
- 2.Sb7#
- 1...Sxf4
- 2.Sxf7#
- 1...Rf5
- 2.Qc6#
- 1...Rf6
- 2.Sc8#
- 1...Sf6
- 2.Sc8#
- 1...c5
- 2.Qc6#
- 1...c6
- 2.Qxc6#
- 1...Rg7
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Rfh7
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Rf8
- 2.Sc8#
- 2.Qd5#
- 2.Qc6#
- 1...Rhh7
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Bg2
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 1...Sc5
- 2.Sc8#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Se5
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 1...Sh6
- 2.Sc8#
- 2.Qd5#
- 2.Qc6#
- 1...Sxe7!
- threat
- 1.Se7?
- Keys
- 1.Sb6!
- threat
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Rxf4
- 2.Qd5#
- 1...Sxb4
- 2.Sb7#
- 1...Sxf4
- 2.Sxf7#
- 1...cxb6
- 2.Qc6#
- 1...Rf6
- 2.Sc8#
- 1...Sf6
- 2.Sc8#
- 1...c5
- 2.Qc6#
- 1...c6
- 2.Qxc6#
- 1...Rf5
- 2.Qc6#
- 1...Rd7
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Re7
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Rg7
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Rfh7
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Rf8
- 2.Sc4#
- 2.Sc8#
- 2.Qd5#
- 2.Qc6#
- 1...Rhh7
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 2.Qc6#
- 1...Bg2
- 2.Sc4#
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 1...Sc1
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Se1
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sb2
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sf2
- 2.Sc8#
- 2.Sb7#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sc5
- 2.Sc8#
- 2.Sxf7#
- 2.Qd5#
- 2.Qc6#
- 1...Se5
- 2.Sc8#
- 2.Sb7#
- 2.Qd5#
- 1...Sh6
- 2.Sc4#
- 2.Sc8#
- 2.Qd5#
- 2.Qc6#
- 1...Se7
- 2.Sc4#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- P(d);SBLOCK::S(H),XR(e)
- Tries
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- R(e);XP(C)::QAR1(A)
- S(b);XP(B)::S(H)
- S(b);XP(C)::S(H),XR(e)
- R(e);::QAR1(A)
- R(e);::S(E)
- S(f);P_PINS(H)::S(E)
- P(d);::QAR1(A)
- P(d);::QAR1(A),XP(d)
- Refutation
- S(f);P_PINS(H),XS(E)
- Try
- Actual
- S(E);
- Threat
- DUALS(6)
- Vars
- R(e);XP(C)::QAR1(A)
- S(b);XP(B)::S(H)
- S(b);XP(C)::S(H),XR(e)
- P(d);XS(E)::QAR1(A)
- R(e);::S(E)
- S(f);P_PINS(H)::S(E)
- P(d);::QAR1(A)
- P(d);::QAR1(A),XP(d)
- R(e);::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).