MESON Chess Problem Database
Problem Display
PID: 272016 (K6k/4p3/p5Q1/3R1N2/r3R3/q7/8/b2r4 w - - 0 1)
Mees, Wouter Jacob Gregorius
Schakend Nederland, 1982
#2
5 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Rd8#
- 1...Rc1
- 2.Rd8#
- 1...Re1
- 2.Rd8#
- 1...Rf1
- 2.Rd8#
- 1...Rg1
- 2.Rd8#
- 1...Rh1
- 2.Rd8#
- 1...Rdd4
- 2.Qg7#
- 1...Rad4
- 2.Qg7#
- 1...Ra5
- 2.Rh4#
- 1...Bd4
- 2.Rh4#
- 2.Rd8#
- 1...Bg7
- 2.Qxg7#
- 1...e5
- 2.Qg7#
- 1...Rb1
- Tries
- 1.Sd4?
- threat
- 2.Rh4#
- 2.Rh5#
- 2.Rd8#
- 1...Rdxd4
- 2.Rh5#
- 1...Raxd4
- 2.Rh5#
- 1...Qc1
- 2.Rd8#
- 1...Qc5
- 2.Rh4#
- 2.Rd8#
- 1...Qd6
- 2.Rh4#
- 2.Rh5#
- 1...Qa2
- 2.Rh4#
- 2.Rh5#
- 1...Qb3
- 2.Rh4#
- 2.Rh5#
- 1...Qe3
- 2.Rd8#
- 1...Qg3
- 2.Rh5#
- 2.Rd8#
- 1...Qh3
- 2.Rd8#
- 1...Rf1
- 2.Rh4#
- 2.Rh5#
- 1...Rh1
- 2.Rd8#
- 1...Ra5
- 2.Rh4#
- 2.Rd8#
- 1...e5
- 2.Rh4#
- 1...e6
- 2.Rh4#
- 2.Rh5#
- 1...Qf3!
- threat
- 1.Sh6?
- threat
- 2.Sf7#
- 2.Qg8#
- 1...Qf3
- 2.Qg8#
- 1...Qg3
- 2.Sf7#
- 1...Rf1
- 2.Qg8#
- 1...Rg1
- 2.Sf7#
- 2.Rd8#
- 1...Bg7!
- threat
- 1.Rg4?
- threat
- 2.Qh5#
- 2.Qh6#
- 2.Qg8#
- 1...Bg7
- 2.Qxg7#
- 1...Qc1
- 2.Qg8#
- 1...Qd6
- 2.Qg8#
- 1...Qe3
- 2.Qg8#
- 1...Qh3
- 2.Qg8#
- 1...Rh1
- 2.Rd8#
- 2.Qg8#
- 1...Rxg4!
- threat
- 1.Rxe7?
- threat
- 2.Rh7#
- 2.Qh7#
- 2.Qe8#
- 1...Bg7
- 2.Qxg7#
- 1...Qg3
- 2.Rh7#
- 2.Re8#
- 2.Qh7#
- 1...Qh3
- 2.Re8#
- 2.Qe8#
- 1...Rg1
- 2.Rd8#
- 2.Rh7#
- 2.Qh7#
- 1...Rh1
- 2.Rd8#
- 2.Qe8#
- 1...Rg4
- 2.Rh7#
- 2.Qh7#
- 1...Rh4
- 2.Qe8#
- 1...Qxe7!
- threat
- 1.Rdd4?
- threat
- 2.Rh4#
- 2.Qg7#
- 1...Rdxd4
- 2.Qg7#
- 1...Raxd4
- 2.Qg7#
- 1...Bxd4
- 2.Rh4#
- 1...Qf3
- 2.Qg7#
- 1...Qc1
- 2.Qg7#
- 1...Qe3
- 2.Qg7#
- 1...Qh3
- 2.Qg7#
- 1...Rg1
- 2.Rd8#
- 2.Rh4#
- 1...Rh1
- 2.Rd8#
- 2.Qg7#
- 1...Qg3!
- threat
- 1.Sd4?
- Keys
- 1.Red4!
- threat
- 2.Rd8#
- 2.Qg7#
- 1...Rdxd4
- 2.Qg7#
- 1...Raxd4
- 2.Qg7#
- 1...Bxd4
- 2.Rd8#
- 1...Qf3
- 2.Qg7#
- 1...Qd6
- 2.Qg7#
- 1...Qa2
- 2.Qg7#
- 1...Qb3
- 2.Qg7#
- 1...Qg3
- 2.Rd8#
- 1...Rg1
- 2.Rd8#
- 1...e5
- 2.Qg7#
- 1...e6
- 2.Qg7#
- threat
- 1.Red4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- R(b);N_GUARD::R(B)
- R(b);S_CUTB(a)::QAB1(D)
- R(d);S_CUTB(a)::QAB1(D)
- R(d);N_GUARD::R(A)
- B(a);N_GUARD::QAB1(D),XB(a)
- P(f);S_CUTB(a)::QAB1(D)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- R(b);XS(C)::R(B)
- R(d);XS(C)::R(B)
- Q(c);::R(B)
- R(b);::R(B)
- P(f);::R(A)
- Refutation
- Q(c);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(c);::QAR1(D)
- Q(c);::S(C)
- R(b);::QAR1(D)
- Refutation
- B(a);
- Try
- R(A);
- Threat
- DUALS(3)
- Vars
- B(a);N_GUARD::QAB1(D),XB(a)
- Q(c);::QAR1(D)
- Refutation
- R(d);XR(A)
- Try
- R(A);XP(f)
- Threat
- DUALS(3)
- Vars
- B(a);N_GUARD::QAB1(D),XB(a)
- R(d);::QAR(D)
- Refutation
- Q(c);XR(A)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- R(b);XR(B)::QAB1(D)
- R(d);XR(B)::QAB1(D)
- B(a);XR(B)::R(A)
- Q(c);P_PINR(A)::QAB1(D)
- Q(c);::QAB1(D)
- Refutation
- Q(c);
- Try
- Actual
- R(A);
- Threat
- DUALS(2)
- Vars
- R(b);XR(A)::QAB1(D)
- R(d);XR(A)::QAB1(D)
- B(a);XR(A)::R(B)
- Q(c);P_PINR(B)::QAB1(D)
- Q(c);::QAB1(D)
- Q(c);::R(B)
- R(b);::R(B)
- P(f);::QAB1(D)
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).