MESON Chess Problem Database
Problem Display
PID: 22388 (8/3p2B1/5Q2/8/1N6/p3K3/1q6/kr5R w - - 0 1)
Niemeijer, Meindert
Majesteitsschennis, 0000
#2
5 + 5
SOLUTION
- SOUND
- Sets
- 1...Qc3+
- 2.Qxc3#
- 1...Qd4+
- 2.Qxd4#
- 1...Qe5+
- 2.Qxe5#
- 1...Qxf6
- 2.Bxf6#
- 1...Rc1
- 2.Rxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Re1+
- 2.Rxe1#
- 1...Rf1
- 2.Rxf1#
- 2.Qxf1#
- 1...Rg1
- 2.Rxg1#
- 1...a2
- 2.Sc2#
- 2.Qxb2#
- 1...Qc3+
- Tries
- 1.Qc3?
- threat
- 2.Qxa3#
- 1...Qxc3+
- 2.Bxc3#
- 1...Re1+
- 2.Rxe1#
- 2.Qxe1#
- 1...Rc1
- 2.Rxc1#
- 2.Qxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Rf1
- 2.Rxf1#
- 1...Rg1
- 2.Rxg1#
- 1...a2
- 2.Sc2#
- 2.Qxb2#
- 1...Rxh1!
- threat
- 1.Qf5?
- threat
- 2.Rxb1#
- 2.Qxb1#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Bxd4#
- 1...Qe5+
- 2.Bxe5#
- 2.Qxe5#
- 1...Re1+
- 2.Rxe1#
- 1...Rc1
- 2.Rxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Rf1
- 2.Rxf1#
- 2.Qxf1#
- 1...Rg1
- 2.Rxg1#
- 1...a2
- 2.Sc2#
- 1...Rxh1!
- threat
- 1.Qa6?
- threat
- 2.Qxa3#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Bxd4#
- 1...Qe5+
- 2.Bxe5#
- 1...Re1+
- 2.Rxe1#
- 1...Rc1
- 2.Rxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Rf1
- 2.Rxf1#
- 2.Qxf1#
- 1...Rg1
- 2.Rxg1#
- 1...a2
- 2.Sc2#
- 2.Qxa2#
- 1...Rxh1!
- threat
- 1.Qg6?
- threat
- 2.Rxb1#
- 2.Qxb1#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Bxd4#
- 1...Qe5+
- 2.Bxe5#
- 1...Re1+
- 2.Rxe1#
- 1...Rc1
- 2.Rxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Rf1
- 2.Rxf1#
- 1...Rg1
- 2.Rxg1#
- 2.Qxg1#
- 1...a2
- 2.Sc2#
- 1...Rxh1!
- threat
- 1.Qf7?
- threat
- 2.Sc2#
- 2.Qa2#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Bxd4#
- 1...Qe5+
- 2.Bxe5#
- 1...Re1+
- 2.Rxe1#
- 1...Qxg7
- 2.Qa2#
- 2.Qxg7#
- 1...Rxh1
- 2.Qa2#
- 1...Qf6
- 2.Bxf6#
- 2.Qa2#
- 2.Qxf6#
- 1...Rc1
- 2.Rxc1#
- 2.Qa2#
- 1...Rd1
- 2.Rxd1#
- 2.Qa2#
- 1...Rf1
- 2.Rxf1#
- 2.Qa2#
- 2.Qxf1#
- 1...Rg1
- 2.Rxg1#
- 2.Qa2#
- 1...a2
- 2.Sc2#
- 2.Qxa2#
- 1...d5!
- threat
- 1.Qc3?
- Keys
- 1.Qf1!
- threat
- 2.Qxb1#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Bxd4#
- 1...Qe5+
- 2.Bxe5#
- 1...Re1+
- 2.Qxe1#
- 1...Rxf1
- 2.Rxf1#
- 1...Rc1
- 2.Qxc1#
- 1...Rd1
- 2.Qxd1#
- 1...a2
- 2.Sc2#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(c);CHECK,OGATEB::QAB(D),XQ(c)
- Q(c);OGATE,XQ(D)::B(E),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- R(b);CHECK,OGATEB::R(A),XR(b)
- Tries
- Try
- Q(D);
- Threat
- QAR2(D),XP(d)
- Vars
- Q(c);CHECK,OGATE,XQ(D)::B(E),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATEB::B(E),XQ(c)
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);OGATEB::R(A),XR(b)
- P(d);SBLOCK::S(C)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Q(D);P_PINP(d)
- Threat
- QAR2(D),XP(d)
- Vars
- Q(c);CHECK,OGATEB::B(E),XQ(c)
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);OGATEB::R(A),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATEB::B(E),XQ(c)
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);OGATEB::R(A),XR(b)
- P(d);SBLOCK::S(C)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATEB::B(E),XQ(c)
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),SBLOCK,XR(A)::QAR1(D)
- Refutation
- P(e);
- Try
- Actual
- Q(D);
- Threat
- QAR1(D),XR(b)
- Vars
- Q(c);CHECK,OGATEB::B(E),XQ(c)
- R(b);CHECK,OGATEB::QAR(D),XR(b)
- R(b);OGATE,XQ(D)::R(A),XR(b)
- R(b);OGATEB::QAR2(D),XR(b)
- R(b);OGATEB::QAR(D),XR(b)
- P(d);SBLOCK::S(C)
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).