MESON Chess Problem Database
Problem Display
PID: 141746 (6R1/Q3Nrp1/2P2k2/1K1P2pP/6p1/1n1N2P1/8/6B1 w - - 0 1)
Niemeijer, Meindert
Probleemblad, 1977
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sd4+
- 2.Bxd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7
- Tries
- 1.Ka4?
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Sa5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Sc5+!
- 1...Rxe7
- 1.Ka6?
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Sa5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Sc5+!
- 1...Rxe7
- 1.Kb6?
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7!
- 1...Rf8
- 1.Bf2?
- 1...Sd4+
- 2.Bxd4#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7!
- 1...Sd4+
- 1.Be3?
- 1...Sd4+
- 2.Bxd4#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7!
- 1...Sd4+
- 1.Ra8?
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6!
- 1...Sd4+
- 1.Rb8?
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6!
- 1...Sd4+
- 1.Rc8?
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6!
- 1...Sd4+
- 1.Rd8?
- threat
- 2.Rd6#
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sc5
- 2.Bd4#
- 1...g6!
- threat
- 1.Re8?
- threat
- 2.Qf2#
- 1...Sd4+
- 2.Bxd4#
- 2.Qxd4#
- 1...Sd2
- 2.Bd4#
- 2.Qd4#
- 2.Qa1#
- 1...Sc5
- 2.Bd4#
- 2.Qa1#
- 1...g6!
- threat
- 1.Rh8?
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6!
- 1...Sd4+
- 1.Qe3?
- threat
- 2.Qe5#
- 2.Qe6#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 2.Qe6#
- 1...Sc5
- 2.Qe5#
- 1...Sd4+!
- threat
- 1.Qd4+?
- 1...Kxe7
- 2.Qe5#
- 1...Sxd4+!
- 1...Kxe7
- 1.Qc5?
- threat
- 2.Qd6#
- 1...Sd4+
- 2.Bxd4#
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sxc5!
- threat
- 1.Qb7?
- 1...Sd4+
- 2.Bxd4#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7!
- 1...Sd4+
- 1.Qc7?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Sd4+
- 2.Bxd4#
- 1...Rf8
- 2.Rxf8#
- 1...Sc5
- 2.Bd4#
- 2.Qe5#
- 1...Rxe7!
- threat
- 1.Qd7?
- threat
- 2.Qe6#
- 2.Qd6#
- 1...Sd4+
- 2.Bxd4#
- 1...Rf8
- 2.Rxf8#
- 2.Qe6#
- 1...Sc5
- 2.Bd4#
- 1...Rxe7!
- threat
- 1.h6?
- 1...Sd4+
- 2.Bxd4#
- 1...gxh6
- 2.Rg6#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7!
- 1...Sd4+
- 1.Ka4?
- Keys
- 1.Kb4!
- 1...Rxe7
- 2.Qf2#
- 1...Rf8
- 2.Rxf8#
- 1...Sa1
- 2.Bd4#
- 1...Sc1
- 2.Bd4#
- 1...Sd2
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Sa5
- 2.Bd4#
- 1...Sc5
- 2.Bd4#
- 1...g6
- 2.Rxg6#
- 1...Rxe7
- 1.Kb4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- S(a);CHECK,N_GUARD::B(A),XS(a)
- P(f);OGATE::R1(J),XP(f)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- S(a);CHECK
- Try
- K(D);S_FLIGHT
- Vars
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- S(a);CHECK
- Try
- K(D);P-FLIGHT
- Vars
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- R(e);XS(I)
- Try
- B(A);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- R(e);XS(I)
- Try
- B(A);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- R(e);XS(I)
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- R(J);
- Threat
- R(J)
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- R(J);
- Threat
- QAR(H)
- Refutation
- P(f);
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(e);SBLOCK,XS(I)::QAR(H)
- S(a);::QAB1(H)
- Refutation
- S(a);CHECK
- Try
- Q(H);CHECK
- Vars
- K(d);S_FLIGHT,XS(I)::QAR2(H)
- Refutation
- S(a);CHECK,XQ(H)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- Refutation
- S(a);XQ(H)
- Try
- Q(H);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- R(e);XS(I)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- R(e);OGATEB::R(J),XR(e)
- Refutation
- R(e);XS(I)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- S(a);N_GUARD::B(A)
- Refutation
- R(e);XS(I)
- Try
- P(F);
- Vars
- S(a);CHECK,N_GUARD::B(A),XS(a)
- P(f);OGATE,XP(F)::R1(J)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- P(f);OGATE::R1(J),XP(f)
- Refutation
- R(e);XS(I)
- Try
- Actual
- K(D);P-FLIGHT
- Vars
- R(e);SBLOCK,XS(I)::QAR(H)
- R(e);OGATEB::R(J),XR(e)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- P(f);OGATE::R1(J),XP(f)
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).