MESON Chess Problem Database
Problem Display
PID: 249677 (1B6/8/2KN1P2/4kP2/4n2n/2P1p2N/8/1B4Q1 w - - 0 1)
Beetz, Sebastian
Uralski Problemist, 2007
#2
9 + 4
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Se8#
- 1...Sf2
- 2.Se8#
- 1...Sg3
- 2.Se8#
- 1...Sc5
- 2.Se8#
- 1...Sg5
- 2.Se8#
- 1...Sxf6
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qh2#
- 2.Qg3#
- 1...e2
- 2.Qd4#
- 1...Sd2
- Tries
- 1.Se8+?
- 1...Sd6
- 2.Bxd6#
- 2.Qh2#
- 2.Qxe3#
- 2.Qg3#
- 1...Kxf5!
- 1...Sd6
- 1.Qh2+?
- 1...Sg3
- 2.Se8#
- 1...Kxf6!
- 1...Sg3
- 1.Qg3+?
- 1...Sxg3
- 2.Se8#
- 1...Kxf6!
- 1...Sxg3
- 1.Qg4?
- threat
- 2.Sxe4#
- 1...Sxc3
- 2.Se8#
- 1...Sxd6
- 2.Qd4#
- 1...Sxf6
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qg3#
- 2.Qd4#
- 2.Qf4#
- 1...Sxf5
- 2.Qxf5#
- 1...Sd2
- 2.Se4#
- 2.Se8#
- 2.Qd4#
- 1...Sf2
- 2.Se4#
- 2.Se8#
- 2.Qd4#
- 1...Sg3
- 2.Se4#
- 2.Se8#
- 2.Qd4#
- 1...Sc5
- 2.Se4#
- 2.Se8#
- 2.Qd4#
- 1...Sg5
- 2.Se4#
- 2.Se8#
- 2.Qd4#
- 1...Kxf6!
- threat
- 1.Qg6?
- threat
- 2.Sc4#
- 2.Sxe4#
- 2.Sf7#
- 1...Sxc3
- 2.Sb5#
- 1...Sxd6
- 2.Bxd6#
- 1...Sxf6
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qg3#
- 1...Sxf5
- 2.Qxf5#
- 1...Sd2
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sf2
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sg3
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sc5
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sg5
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sxg6!
- threat
- 1.Se8+?
- Keys
- 1.Qg5!
- threat
- 2.Sc4#
- 2.Sxe4#
- 2.Sf7#
- 1...Sxc3
- 2.Sb5#
- 1...Sxg5
- 2.Se8#
- 1...Sxd6
- 2.Bxd6#
- 1...Sxf6
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qf4#
- 2.Qg3#
- 1...Sxf5
- 2.Qxf5#
- 1...Sd2
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sf2
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sg3
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sc5
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- S(b);N_GUARD::B(I)+S(G)
- P(a);OGATE::QAB1(B)
- Tries
- Try
- S(G);CHECK
- Refutation
- K(d);P-FLIGHT,P_SPINS(b),XP(E)
- Try
- Q(B);CHECK
- Vars
- S(b);P_SPINS(b)::B(I)+S(G)
- Refutation
- K(d);S_FLIGHT,XP(H)
- Try
- Q(B);CHECK
- Vars
- S(b);XQ(B)::B(I)+S(G)
- Refutation
- K(d);S_FLIGHT,XP(H)
- Try
- Q(B);
- Threat
- B(I)+S(G),XS(b)
- Vars
- S(b);N_GUARD,XP(C)::B(I)+S(G)
- S(b);OGATE,P_SPINS(b),XS(G)::QAB1(B)
- S(c);OGATE,XP(E)::QAR1(B),XS(c)
- Refutation
- K(d);S_FLIGHT,XP(H)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD,XP(C)::B(I)+S(G)
- S(b);OGATE,P_SPINS(b),XS(G)::B(I),XS(b)
- S(c);OGATE,XP(E)::QAR1(B),XS(c)
- Refutation
- S(c);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD,XP(C)::B(I)+S(G)
- S(b);N_GUARD,XQ(B)::B(I)+S(G)
- S(b);OGATE,P_SPINS(b),XS(G)::B(I),XS(b)
- S(c);OGATE,P_SPINS(c),XP(E)::QAR1(B),XS(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).