MESON Chess Problem Database
Problem Display
PID: 67531 (Bn6/nP1N2p1/1BkPR1N1/1p6/1p5p/1P4pQ/6K1/8 w - - 0 1)
Lindgren, Bo Waldemar
Problemisten, 1950
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Se7#
- 1...Kxd7
- 2.Se5#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Kd5
- Tries
- 1.Kf1?
- 1...Kd5
- 2.Se7#
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...g2+!
- 1...Kd5
- 1.Kg1?
- 1...Kd5
- 2.Se7#
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...g2!
- 1...Kd5
- 1.Kh1?
- 1...Kd5
- 2.Se7#
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...g2+!
- 1...Kd5
- 1.Kf3?
- 1...Kd5
- 2.Se7#
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...g2!
- 1...Kd5
- 1.Sxb8+?
- 1...Kd5
- 2.Sf4#
- 2.Se7#
- 2.Qf5#
- 1...Kxb6!
- 1...Kd5
- 1.Sdf8?
- 1...Kd5
- 2.Se7#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8R#
- 1...Sd7
- 2.b8Q#
- 2.b8R#
- 1...Kxb6!
- 1...Kd5
- 1.Bg1?
- 1...Kd5
- 2.Se7#
- 1...Sxd7
- 2.Se7#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...Kxd7!
- 1...Kd5
- 1.Be3?
- 1...Kd5
- 2.Se7#
- 1...Sxd7
- 2.Se7#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...Kxd7!
- 1...Kd5
- 1.Bxa7?
- 1...Kd5
- 2.Se7#
- 1...Sxd7
- 2.Se7#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sa6
- 2.b8S#
- 1...Kxd7!
- 1...Kd5
- 1.Re1?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Re2?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Re3?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Re4?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Re7?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Re8?
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kd5!
- 1...Kxd6
- 1.Qg4?
- 1...Kd5
- 2.Se7#
- 2.Qe4#
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...h3+!
- 1...Kd5
- 1.Qf5?
- 1...Kxd7
- 2.Se5#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...h3+!
- 1...Kxd7
- 1.Qxh4?
- 1...Kd5
- 2.Qe4#
- 1...Sxd7
- 2.b8Q#
- 2.b8R#
- 1...Sc8
- 2.bxc8Q#
- 2.bxc8B#
- 1...Sa6
- 2.b8S#
- 1...Kxd7!
- 1...Kd5
- 1.Kf1?
- Keys
- 1.Re5!
- 1...Kxd6
- 2.Qe6#
- 1...Sxd7
- 2.b8Q#
- 1...Sc8
- 2.bxc8S#
- 1...Sa6
- 2.b8Q#
- 2.b8B#
- 1...Kxd6
- 1.Re5!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- K(e);S_FLIGHT::S(G)
- K(e);S_FLIGHT,XS(I)::S(G)
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- K(e);S_FLIGHT::S(G)
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- K(e);S_FLIGHT::S(G)
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- K(e);S_FLIGHT::S(G)
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- K(e);S_FLIGHT::S(G)
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(a);
- Try
- S(I);CHECK,XS(h)
- Refutation
- K(e);P-FLIGHT,XB(D)
- Try
- S(I);
- Vars
- K(e);S_FLIGHT::S(G)
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);P-FLIGHT,XB(D)
- Try
- B(D);
- Vars
- K(e);S_FLIGHT::S(G)
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- B(D);
- Vars
- K(e);S_FLIGHT::S(G)
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- B(D);XS(f)
- Vars
- K(e);S_FLIGHT::S(G)
- S(h);OGATE::P=S
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
- Refutation
- K(e);S_FLIGHT
- Try
- Q(C);
- Vars
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(c);CHECK
- Try
- Q(C);
- Vars
- K(e);S_FLIGHT,XS(I)::S(G)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- P(c);CHECK
- Try
- Q(C);XP(c)
- Vars
- K(e);S_FLIGHT::QAB1(C)
- S(h);OGATE,SBLOCK,XS(I)::P=Q
- S(f);OGATE::PXS(f)=Q
- S(h);OGATE::P=S
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- Actual
- R(F);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(E)::QAR1(C)
- S(h);OGATE,XS(I)::P=Q
- S(f);OGATE::PXS(f)=S
- S(h);OGATE::P=Q
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).