MESON Chess Problem Database
Problem Display
PID: 117802 (4N3/2p2r2/4p2Q/K1R1bk1B/7n/3P1r2/2n1N3/8 w - - 0 1)
Niemeijer, Meindert
Inspanning en Ontspanning, 1969
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Rxd3
- 2.Qf4#
- 1...Re3
- 2.Qf4#
- 1...Rg3
- 2.Sxg3#
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Sg3#
- 2.Qxf4#
- 1...Rf6
- 2.Sg7#
- 2.Qxf6#
- 1...Rd7
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Qf6#
- 1...Rf8
- 2.Sg7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...c6
- 2.Sd6#
- 1...Rf1
- Tries
- 1.Ka6?
- 1...Rxd3
- 2.Qf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Qf4#
- 1...Rg3
- 2.Sxg3#
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Sg3#
- 2.Qxf4#
- 1...Rf6
- 2.Sg7#
- 2.Qxf6#
- 1...Rd7
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Qf6#
- 1...Rf8
- 2.Sg7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...c6
- 2.Sd6#
- 1...Sb4+!
- 1...Rxd3
- 1.Bxf3?
- threat
- 2.Sg3#
- 2.Qh5#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Sg3#
- 2.Qf6#
- 1...Sxf3!
- threat
- 1.Bg6+?
- 1...Sxg6
- 2.Qh5#
- 1...Kg4!
- 1...Sxg6
- 1.Bxf7?
- threat
- 2.Bxe6#
- 2.Qh5#
- 1...Rxd3
- 2.Qf4#
- 1...Rg3
- 2.Bxe6#
- 2.Qf4#
- 1...Sd4
- 2.Qh5#
- 1...Sg6
- 2.Qh5#
- 2.Qxg6#
- 1...Kg4!
- threat
- 1.Rb5?
- 1...Rxd3
- 2.Qf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Qf4#
- 1...Rg3
- 2.Sxg3#
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Sg3#
- 2.Qxf4#
- 1...Rf6
- 2.Sg7#
- 2.Qxf6#
- 1...Rd7
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Qf6#
- 1...Rf8
- 2.Sg7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...c6
- 2.Sd6#
- 1...c5!
- 1...Rxd3
- 1.Rd5?
- 1...Rxd3
- 2.Qf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Qf4#
- 1...Rg3
- 2.Sxg3#
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Sg3#
- 2.Qxf4#
- 1...Rf6
- 2.Sg7#
- 2.Qxf6#
- 1...Rd7
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Qf6#
- 1...Rf8
- 2.Sg7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...c5
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...exd5!
- 1...Rxd3
- 1.Qg7?
- threat
- 2.Bg4#
- 2.Rxe5#
- 2.Qxe5#
- 2.Qg4#
- 1...Rxd3
- 2.Rxe5#
- 2.Qxe5#
- 2.Qg4#
- 1...Sg6
- 2.Qxg6#
- 1...Re3
- 2.Bg4#
- 2.Qg4#
- 1...Rg3
- 2.Rxe5#
- 2.Qxe5#
- 1...Rf4
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Rf6
- 2.Bg4#
- 2.Qxf6#
- 2.Qg4#
- 1...Se3
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxg7!
- threat
- 1.Ka6?
- Keys
- 1.Ka4!
- 1...Rf4+
- 2.Qxf4#
- 1...Rxd3
- 2.Qf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Qf4#
- 1...Rg3
- 2.Sxg3#
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf6
- 2.Sg7#
- 2.Qxf6#
- 1...Rd7
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rg7
- 2.Sxg7#
- 2.Qf6#
- 1...Rh7
- 2.Qf6#
- 1...Rf8
- 2.Sg7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...c6
- 2.Sd6#
- 1...Rf4+
- 1.Ka4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::S(A)
- R(b);N_GUARD,XP(B)::QAR1(F)
- R(b);N_GUARD::QAR1(F)
- R(h);N_GUARD::QAR1(F)
- R(h);N_GUARD::S(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(g);N_GUARD::S(G)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- R(b);N_GUARD,XP(B)::QAR1(F)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::QAR1(F)
- R(h);N_GUARD::QAR1(F)
- R(h);N_GUARD::S(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(g);N_GUARD::S(G)
- Refutation
- S(a);CHECK
- Try
- B(E);XR(b)
- Threat
- DUALS(2)
- Refutation
- S(c);XB(E)
- Try
- B(E);CHECK
- Vars
- S(c);XB(E)::QAR2(F)
- Refutation
- K(e);N_SPINB(d),S_FLIGHT
- Try
- B(E);XR(h)
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XP(B)::QAR1(F)
- S(a);::QAR2(F)
- Refutation
- K(e);N_SPINB(d),S_FLIGHT
- Try
- R(D);
- Vars
- R(b);N_GUARD,XP(B)::QAR1(F)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::QAR1(F)
- R(h);N_GUARD::QAR1(F)
- R(h);N_GUARD::S(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(g);N_GUARD::S(G)
- Refutation
- P(g);N_SPINB(d)
- Try
- R(D);
- Vars
- R(b);N_GUARD,XP(B)::QAR1(F)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::QAR1(F)
- R(h);N_GUARD::QAR1(F)
- R(h);N_GUARD::S(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(g);N_GUARD::S(G)
- Refutation
- P(f);N_SPINB(d),XR(D)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- R(h);XQ(F)
- Try
- Actual
- K(C);P-FLIGHT
- Vars
- R(b);CHECK,N_GUARD::QAR1(F),XR(b)
- R(b);N_GUARD,XP(B)::QAR1(F)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::QAR1(F)
- R(h);N_GUARD::QAR1(F)
- R(h);N_GUARD::S(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(g);N_GUARD::S(G)
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).