MESON Chess Problem Database
Problem Display
PID: 51264 (8/3N1RB1/7p/7K/p1P1k3/q4r2/1Nn5/6QB w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1955
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Sc5#
- 1...Qb4
- 2.Bxf3#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Bxf3#
- 1...Qe7
- 2.Bxf3#
- 1...Qf8
- 2.Bxf3#
- 1...Qa1
- 2.Sc5#
- 2.Bxf3#
- 1...Qa2
- 2.Sc5#
- 2.Bxf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qe3
- 2.Qg6#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Bxf3#
- 1...Sb4
- 2.Sc5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qxb2
- Tries
- 1.Bg2?
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 1...Qb4
- 2.Bxf3#
- 1...Qd6
- 2.Bxf3#
- 1...Qe7
- 2.Bxf3#
- 1...Qf8
- 2.Bxf3#
- 1...Qa1
- 2.Sc5#
- 2.Bxf3#
- 1...Qa2
- 2.Sc5#
- 2.Bxf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Bxf3#
- 1...Sb4
- 2.Sc5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qe3!
- 1...Qc5+
- 1.Bc3?
- threat
- 2.Bxf3#
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 1...Se1
- 2.Qd4#
- 2.Qxe1#
- 1...Sd4
- 2.Qxd4#
- 1...Qxc3!
- threat
- 1.Be5?
- threat
- 2.Rf4#
- 1...Qe3
- 2.Qg6#
- 1...Qf8
- 2.Bxf3#
- 1...Qxb2!
- threat
- 1.Re7+?
- 1...Kf4
- 2.Qg4#
- 1...Kf5
- 2.Qg4#
- 1...Qxe7!
- 1...Kf4
- 1.Rf8?
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 1...Qe3
- 2.Qg6#
- 1...Qb4
- 2.Bxf3#
- 1...Qd6
- 2.Bxf3#
- 1...Qe7
- 2.Bxf3#
- 1...Qa1
- 2.Sc5#
- 2.Bxf3#
- 1...Qa2
- 2.Sc5#
- 2.Bxf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Bxf3#
- 1...Sb4
- 2.Sc5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qxf8!
- 1...Qc5+
- 1.Qf2?
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 2.Qxf3#
- 1...Qb4
- 2.Bxf3#
- 2.Qxf3#
- 1...Qd6
- 2.Bxf3#
- 2.Qxf3#
- 1...Qe7
- 2.Bxf3#
- 2.Qxf3#
- 1...Qf8
- 2.Bxf3#
- 2.Qxf3#
- 1...Qa1
- 2.Sc5#
- 2.Bxf3#
- 2.Qxf3#
- 1...Qa2
- 2.Sc5#
- 2.Bxf3#
- 2.Qxf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Bxf3#
- 2.Qxf3#
- 1...Sb4
- 2.Sc5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qe3!
- 1...Qc5+
- 1.Qc1?
- threat
- 2.Rf4#
- 2.Qf4#
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 1...Qd6
- 2.Bxf3#
- 1...Qf8
- 2.Bxf3#
- 2.Qf4#
- 1...Se3
- 2.Bxf3#
- 1...Qe3!
- threat
- 1.Qe1+?
- 1...Qe3
- 2.Sc5#
- 2.Bxf3#
- 1...Se3
- 2.Bxf3#
- 1...Sxe1!
- 1...Qe3
- 1.Qg5?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Qxb2
- 2.Sc5#
- 1...Qe3
- 2.Re7#
- 2.Qe7#
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Qc5
- 2.Sxc5#
- 2.Bxf3#
- 1...Qd6
- 2.Bxf3#
- 1...Qe7
- 2.Bxf3#
- 2.Rxe7#
- 2.Qf4#
- 2.Qxe7#
- 1...Qc3
- 2.Sc5#
- 2.Qf4#
- 1...hxg5!
- threat
- 1.Bg2?
- Keys
- 1.Bh8!
- 1...Qc5+
- 2.Sxc5#
- 1...Qxb2
- 2.Sc5#
- 1...Qe3
- 2.Qg6#
- 1...Qb4
- 2.Bxf3#
- 1...Qd6
- 2.Bxf3#
- 1...Qe7
- 2.Bxf3#
- 1...Qf8
- 2.Bxf3#
- 1...Qa1
- 2.Sc5#
- 2.Bxf3#
- 1...Qa2
- 2.Sc5#
- 2.Bxf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Bxf3#
- 1...Sb4
- 2.Sc5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qc5+
- 1.Bh8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);N_GUARD::B(B),XR(c)
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD::S(F)
- Q(b);SBLOCK::QAB(A)
- S(a);N_GUARD::QAR1(A)
- S(a);S_CUTQ(b)::B(B),XR(c)
- S(a);N_GUARD::QAR1(A),XS(a)
- Tries
- Try
- B(B);
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);N_GUARD::B(B),XR(c)
- Q(b);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(A)
- S(a);S_CUTQ(b)::B(B),XR(c)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- Q(b);
- Try
- B(H);
- Threat
- B(B),XR(c)
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,XS(C)::S(F)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- Q(b);XB(H)
- Try
- B(H);
- Threat
- R1(G)
- Vars
- Q(b);SBLOCK::QAB(A)
- Q(b);N_GUARD::B(B),XR(c)
- Refutation
- Q(b);XS(C)
- Try
- R(G);CHECK
- Vars
- K(e);N_SPINR(c),P-FLIGHT::QAR1(A)
- K(e);N_SPINR(c),S_FLIGHT::QAB1(A)
- Refutation
- Q(b);XR(G)
- Try
- R(G);
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);SBLOCK::QAB(A)
- Q(b);N_GUARD::B(B),XR(c)
- Q(b);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(A)
- S(a);S_CUTQ(b)::B(B),XR(c)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- Q(b);XR(G)
- Try
- Q(A);
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- Q(b);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);N_GUARD::B(B),XR(c)
- S(a);S_CUTQ(b)::B(B),XR(c)
- Refutation
- Q(b);
- Try
- Q(A);CHECK
- Vars
- S(a);P_SPINS(a)::B(B),XR(c)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);N_GUARD::B(B),XR(c)
- Refutation
- P(f);XQ(A)
- Try
- Actual
- B(H);
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,XS(C)::S(F)
- Q(b);SBLOCK::QAB(A)
- Q(b);N_GUARD::B(B),XR(c)
- Q(b);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(A)
- S(a);S_CUTQ(b)::B(B),XR(c)
- S(a);N_GUARD::QAR1(A),XS(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).