MESON Chess Problem Database
Problem Display
PID: 68072 (2nB1nB1/p1PN1Pq1/PbK1k3/1N1R2p1/1Q1p2p1/2P3P1/8/8 w - - 0 1)
Bartlett, Ira A
Chess, 1949
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qxf7
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Bxc7
- 2.Sxc7#
- 2.Sc5#
- 1...Sd6
- 2.Qxd6#
- 1...Se7+
- 2.Qxe7#
- 1...Sg6
- 2.f8S#
- 1...Sxd7
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...dxc3
- 2.Qxg4#
- 1...d3
- 2.Qxg4#
- 1...Qe5
- Tries
- 1.Sxd4+?
- 1...Qxd4
- 2.Sxf8#
- 1...Bxd4!
- 1...Qxd4
- 1.Sd6?
- 1...Qxf7
- 2.Sxf8#
- 2.Bxf7#
- 2.Re5#
- 1...Qxg8
- 2.Re5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sc5#
- 1...Sxd6
- 2.Qxd6#
- 1...Sxd7
- 2.f8S#
- 1...dxc3
- 2.Qxg4#
- 1...Qe5
- 2.Sxf8#
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...d3
- 2.Qxg4#
- 1...Se7+!
- 1...Qxf7
- 1.Bxg5?
- 1...Se7+
- 2.Qxe7#
- 1...Qxf7
- 2.Sxf8#
- 2.Re5#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sxc7#
- 2.Sc5#
- 1...Sxd7
- 2.f8S#
- 1...dxc3
- 2.Qxg4#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Sd6
- 2.Qxd6#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...d3
- 2.Qxg4#
- 1...Qxg5!
- 1...Se7+
- 1.Bf6?
- threat
- 2.Re5#
- 1...Se7+
- 2.Qxe7#
- 1...Qxf6
- 2.Sxf8#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sxd4#
- 2.Sxc7#
- 1...Sg6
- 2.f8S#
- 1...Sxd7!
- threat
- 1.Rxg5?
- threat
- 2.Qb3#
- 2.Qc4#
- 1...Se7+
- 2.Qxe7#
- 1...Qe5
- 2.Sxf8#
- 2.Rxe5#
- 1...Sd6
- 2.Qxd6#
- 1...Qxg5!
- threat
- 1.Qb3?
- threat
- 2.Rc5#
- 2.Re5#
- 2.Rxg5#
- 1...Sxd7
- 2.Rc5#
- 2.Rxg5#
- 2.f8S#
- 1...Qe5
- 2.Rxe5#
- 1...Bc5
- 2.Sxc5#
- 2.Rxc5#
- 2.Re5#
- 2.Rxg5#
- 1...Sd6
- 2.Re5#
- 1...Se7+!
- threat
- 1.Qc4?
- threat
- 2.Rc5#
- 2.Re5#
- 2.Rxg5#
- 1...Sxd7
- 2.Rc5#
- 2.Rxg5#
- 2.f8S#
- 1...Qe5
- 2.Rxe5#
- 1...Bc5
- 2.Sxc5#
- 2.Rxc5#
- 2.Re5#
- 2.Rxg5#
- 1...Sd6
- 2.Re5#
- 1...Se7+!
- threat
- 1.cxd4?
- 1...Se7+
- 2.Qxe7#
- 1...Qxd4
- 2.Sxf8#
- 1...Qxf7
- 2.Sxf8#
- 2.Re5#
- 2.Qe1#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sxc7#
- 2.Sc5#
- 1...Sxd7
- 2.f8S#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 2.Qe1#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Sd6
- 2.Qxd6#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...Bxd4!
- 1...Se7+
- 1.c4?
- 1...Se7+
- 2.Qxe7#
- 1...Qxf7
- 2.Sxf8#
- 2.Re5#
- 2.Qe1#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sxc7#
- 2.Sc5#
- 1...Sxd7
- 2.f8S#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 2.Qe1#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Sd6
- 2.Qxd6#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...d3!
- 1...Se7+
- 1.Sxd4+?
- Keys
- 1.Sa3!
- 1...Se7+
- 2.Qxe7#
- 1...Qxf7
- 2.Sxf8#
- 2.Re5#
- 1...Qxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bxc7
- 2.Sc5#
- 1...Sxd7
- 2.f8S#
- 1...dxc3
- 2.Qxg4#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf8#
- 1...Qh6
- 2.Re5#
- 1...Qh8
- 2.Sxf8#
- 1...Qg6
- 2.Sxf8#
- 2.Re5#
- 1...Qh7
- 2.Sxf8#
- 2.Re5#
- 1...Ba5
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Sd6
- 2.Qxd6#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...d3
- 2.Qxg4#
- 1...Se7+
- 1.Sa3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(g);N_GUARD::R1(E),XQ(g)
- Q(g);N_GUARD::S(I),XS(i)
- Q(g);N_GUARD::R1(E)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(h);N_GUARD::QAR1(C),XS(h)
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- S(i);OGATE::P=S
- S(i);OGATE,XS(I)::P=S
- P(a);OGATE,XP(A)::QAB(C),XP(b)
- P(a);OGATE::QAB(C),XP(b)
- Tries
- Try
- S(D);CHECK,XP(a)
- Vars
- Q(g);XS(D)::S(I),XS(i)
- Refutation
- B(d);XS(D)
- Try
- S(D);
- Vars
- B(d);N_GUARD,XP(H)::S(I)
- S(h);OGATE,XS(D)::QAR1(C),XS(h)
- S(i);OGATE,XS(I)::P=S
- P(a);OGATE,XP(A)::QAB(C),XP(b)
- Q(g);N_GUARD::S(I),XS(i)
- Q(g);N_GUARD::R1(E)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(i);OGATE::P=S
- P(a);OGATE::QAB(C),XP(b)
- Refutation
- S(h);CHECK
- Try
- B(K);XP(c)
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- S(i);OGATE,XS(I)::P=S
- P(a);OGATE,XP(A)::QAB(C),XP(b)
- Q(g);N_GUARD::R1(E),XQ(g)
- Q(g);N_GUARD::S(I),XS(i)
- Q(g);N_GUARD::R1(E)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(h);N_GUARD::QAR1(C),XS(h)
- S(i);OGATE::P=S
- P(a);OGATE::QAB(C),XP(b)
- Refutation
- Q(g);XB(K)
- Try
- B(K);
- Threat
- R1(E)
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- Q(g);N_GUARD,SBLOCK,XB(K)::S(I),XS(i)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- S(i);OGATE::P=S
- Refutation
- S(i);XS(I)
- Try
- R(E);XP(c)
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- S(h);N_GUARD::QAR1(C),XS(h)
- Refutation
- Q(g);XR(E)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- Q(g);::QAB(C)+R(E),DCHECK,XQ(g)
- S(h);::QAB(C)+R(E),DCHECK
- Refutation
- S(h);CHECK
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- Q(g);::QAB(C)+R(E),DCHECK,XQ(g)
- S(h);::QAB(C)+R(E),DCHECK
- Refutation
- S(h);CHECK
- Try
- P(A);XP(a)
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- Q(g);N_GUARD,XP(A)::S(I),XS(i)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- S(i);OGATE,XS(I)::P=S
- Q(g);N_GUARD::R1(E),XQ(g)
- Q(g);N_GUARD::S(I),XS(i)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(h);N_GUARD::QAR1(C),XS(h)
- S(i);OGATE::P=S
- Refutation
- B(d);XP(A)
- Try
- P(A);
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- S(i);OGATE,XS(I)::P=S
- Q(g);N_GUARD::R1(E),XQ(g)
- Q(g);N_GUARD::S(I),XS(i)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(h);N_GUARD::QAR1(C),XS(h)
- S(i);OGATE::P=S
- Refutation
- P(a);
- Try
- Actual
- S(D);
- Vars
- S(h);CHECK,N_GUARD::QAR1(C),XS(h)
- Q(g);OGATE,XB(L)::PXQ(g)=Q
- B(d);N_GUARD,XP(H)::S(I)
- S(i);OGATE,XS(I)::P=S
- P(a);OGATE,XP(A)::QAB(C),XP(b)
- Q(g);N_GUARD::R1(E),XQ(g)
- Q(g);N_GUARD::S(I),XS(i)
- Q(g);N_GUARD::R1(E)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(h);N_GUARD::QAR1(C),XS(h)
- S(i);OGATE::P=S
- P(a);OGATE::QAB(C),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).