MESON Chess Problem Database
Problem Display
PID: 106848 (5Kn1/6Np/6kp/5Nr1/3P3B/8/8/5RQ1 w - - 0 1)
Andrade, Barry Jack da Costa
London Evening News, 1958
#2
7 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf6
- 2.Se7#
- 1...Rxg1
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...h5
- 2.Qxg5#
- 1...Kf6
- Tries
- 1.Kxg8?
- threat
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Kf6!
- threat
- 1.Bxg5?
- threat
- 2.Sh4#
- 2.Bh4#
- 2.Be7#
- 2.Bd8#
- 1...Sf6
- 2.Sh4#
- 2.Se7#
- 1...Se7
- 2.Sh4#
- 2.Sxe7#
- 2.Bh4#
- 2.Bxe7#
- 1...hxg5!
- threat
- 1.Ra1?
- 1...Kf6
- 2.Ra6#
- 1...Rxg1
- 2.Rxg1#
- 1...Sf6
- 2.Se7#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...h5
- 2.Qxg5#
- 1...Se7!
- 1...Kf6
- 1.Rb1?
- 1...Kf6
- 2.Rb6#
- 1...Rxg1
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Se7!
- 1...Kf6
- 1.Rc1?
- 1...Kf6
- 2.Rc6#
- 1...Rxg1
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Se7!
- 1...Kf6
- 1.Rf2?
- 1...Kf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rg2
- 2.Rxg2#
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg1!
- 1...Kf6
- 1.Rf3?
- 1...Kf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Rxg3#
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg1!
- 1...Kf6
- 1.Rf4?
- 1...Kf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Rxg4#
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg1!
- 1...Kf6
- 1.Qe3?
- 1...Kf6
- 2.Se7#
- 2.Qe6#
- 1...Se7
- 2.Sxe7#
- 2.Qe6#
- 1...Rg1
- 2.Rxg1#
- 2.Qxg1#
- 2.Qe8#
- 1...Rg2
- 2.Qe8#
- 1...Rg3
- 2.Qxg3#
- 2.Qe8#
- 1...Rg4
- 2.Qe8#
- 1...Rh5
- 2.Qe8#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxf5+!
- 1...Kf6
- 1.Qg2?
- 1...Kf6
- 2.Se7#
- 2.Qc6#
- 1...Se7
- 2.Sxe7#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg2!
- 1...Kf6
- 1.Qg3?
- 1...Kf6
- 2.Se7#
- 2.Qd6#
- 1...Se7
- 2.Sxe7#
- 2.Qd6#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg3!
- 1...Kf6
- 1.Qg4?
- 1...Kf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Rxg4!
- 1...Kf6
- 1.d5?
- 1...Rxg1
- 2.Rxg1#
- 1...Se7
- 2.Sxe7#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Kf6!
- 1...Rxg1
- 1.Kxg8?
- Keys
- 1.Re1!
- 1...Kf6
- 2.Re6#
- 1...Rxg1
- 2.Rxg1#
- 1...Se7
- 2.Re6#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sf6
- 2.Se7#
- 1...h5
- 2.Qxg5#
- 1...Kf6
- 1.Re1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(b);P-FLIGHT::R(A)+S(E)
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- P(c);N_GUARD::QAR1(B),XR(a)
- Tries
- Try
- K(G);P-FLIGHT,XS(e)
- Threat
- S(E)
- Vars
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- K(b);P-FLIGHT,P_PINS(F)
- Try
- B(D);XR(a)
- Threat
- DUALS(4)
- Refutation
- P(c);P_SPINP(c),XB(D)
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- S(e);N_GUARD,SBLOCK::S(E)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- S(e);
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD,SBLOCK::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- S(e);
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD,SBLOCK::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- S(e);
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)+S(E)
- S(e);N_GUARD::S(E),XS(e)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)+S(E)
- S(e);N_GUARD::S(E),XS(e)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- R(A);
- Vars
- K(b);P-FLIGHT::R(A)+S(E)
- S(e);N_GUARD::S(E),XS(e)
- R(a);OGATEB::QAR(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- Q(B);N_PINR(a)
- Vars
- R(a);::QAB(B)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);CHECK,XS(E)
- Try
- Q(B);
- Vars
- S(e);N_GUARD::S(E),XS(e)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- Q(B);
- Vars
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- Q(B);
- Vars
- K(b);P-FLIGHT::R(A)+S(E)
- S(e);N_GUARD::S(E),XS(e)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- R(a);N_SPINR(a),XQ(B)
- Try
- P(C);
- Vars
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- S(e);N_GUARD::S(E),XS(e)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD::S(E)
- P(c);N_GUARD::QAR1(B),XR(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- R(A);
- Vars
- K(b);P-FLIGHT::R1(A)
- R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
- S(e);N_GUARD::R(A)
- R(a);OGATEB::QAR(B),XR(a)
- R(a);OGATEB::QAR2(B),XR(a)
- S(e);N_GUARD,SBLOCK::S(E)
- P(c);N_GUARD::QAR1(B),XR(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).