MESON Chess Problem Database
Problem Display
PID: 234846 (2B5/Kp6/pp2RP1B/q4k2/4RNp1/2r5/3r4/5Q2 w - - 0 1)
Groeneveld, Cornelis
Problemas, 1983
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb4
- 2.R4e5#
- 1...Qa1
- 2.R4e5#
- 1...Qa2
- 2.R4e5#
- 1...Qa3
- 2.R4e5#
- 1...Qa4
- 2.R4e5#
- 1...Qe5
- 2.R4xe5#
- 1...g3
- 2.Qh3#
- 1...b5
- 2.R4e5#
- 1...Qb4
- Tries
- 1.Sg2+?
- 1...Rf2
- 2.Sh4#
- 1...Rf3
- 2.Sh4#
- 1...Kg6!
- 1...Rf2
- 1.Sd5+?
- 1...Rf2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Kg6!
- 1...Rf2
- 1.Sg6+?
- 1...Rf2
- 2.Sh4#
- 2.Se7#
- 1...Rf3
- 2.Sh4#
- 2.Se7#
- 1...Kxg6!
- 1...Rf2
- 1.f7?
- threat
- 2.f8Q#
- 2.f8R#
- 1...Rxc8
- 2.Se2#
- 1...Qe5
- 2.R4xe5#
- 1...g3
- 2.Qh3#
- 1...Rf2
- 2.f8Q#
- 2.f8R#
- 1...Qb4
- 2.R4e5#
- 1...Qa1
- 2.R4e5#
- 2.f8Q#
- 2.f8R#
- 1...Qa2
- 2.R4e5#
- 2.f8Q#
- 2.f8R#
- 1...Qa3
- 2.R4e5#
- 1...Qa4
- 2.R4e5#
- 2.f8Q#
- 2.f8R#
- 1...Qb5
- 2.f8Q#
- 2.f8R#
- 1...Qd5
- 2.f8Q#
- 2.f8R#
- 1...Rd1
- 2.f8Q#
- 2.f8R#
- 1...Ra2
- 2.f8Q#
- 2.f8R#
- 1...Rb2
- 2.f8Q#
- 2.f8R#
- 1...Rdc2
- 2.f8Q#
- 2.f8R#
- 1...Re2
- 2.f8Q#
- 2.f8R#
- 1...Rg2
- 2.f8Q#
- 2.f8R#
- 1...Rh2
- 2.f8Q#
- 2.f8R#
- 1...Rdd3
- 2.Sxd3#
- 2.f8Q#
- 2.f8R#
- 1...Rd4
- 2.Sd3#
- 2.f8Q#
- 2.f8R#
- 1...Rd5
- 2.Sd3#
- 2.f8Q#
- 2.f8R#
- 1...Rd6
- 2.Sd3#
- 2.f8Q#
- 2.f8R#
- 1...Rd7
- 2.Sd3#
- 1...Rd8
- 2.Sd3#
- 1...Rc1
- 2.f8Q#
- 2.f8R#
- 1...Rcc2
- 2.Se2#
- 2.f8Q#
- 2.f8R#
- 1...Ra3
- 2.f8Q#
- 2.f8R#
- 1...Rb3
- 2.f8Q#
- 2.f8R#
- 1...Rcd3
- 2.f8Q#
- 2.f8R#
- 1...Re3
- 2.f8Q#
- 2.f8R#
- 1...Rf3
- 2.f8Q#
- 2.f8R#
- 1...Rg3
- 2.f8Q#
- 2.f8R#
- 1...Rh3
- 2.f8Q#
- 2.f8R#
- 1...Rc4
- 2.Se2#
- 2.f8Q#
- 2.f8R#
- 1...Rc5
- 2.Se2#
- 2.f8Q#
- 2.f8R#
- 1...Rc6
- 2.Se2#
- 2.f8Q#
- 2.f8R#
- 1...Rc7
- 2.Se2#
- 1...b5
- 2.R4e5#
- 2.f8Q#
- 2.f8R#
- 1...Qc5!
- threat
- 1.Sg2+?
- Keys
- 1.Qh1!
- threat
- 2.Qh5#
- 1...Qe5
- 2.R4xe5#
- 1...Rh2
- 2.Rc6#
- 1...Rh3
- 2.Rd6#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(d);N_GUARD::R1(B)
- Q(d);N_GUARD::R1(B),XQ(d)
- P(c);OGATEB::QAB(A)
- P(g);S_CUTQ(d)::R1(B)
- Tries
- Try
- S(C);CHECK
- Vars
- R(a);P_SPINR(a)::S(C)
- R(b);P_SPINR(b)::S(C)
- Refutation
- K(e);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- R(a);P_SPINR(a)::S(C)
- R(b);P_SPINR(b)::S(C)
- Refutation
- K(e);S_FLIGHT
- Try
- S(C);CHECK
- Refutation
- K(e);S_FLIGHT,XS(C)
- Try
- P(E);
- Threat
- P=Q
- Vars
- R(b);N_GUARD,XB(H)::QAR(A)+S(C)
- Q(d);N_GUARD::R1(B),XQ(d)
- P(c);OGATEB::QAB(A)
- R(a);::P=Q
- Q(d);N_GUARD::R1(B)
- Q(d);::P=Q
- R(a);N_GUARD::QAR(A)+S(C)
- R(b);::P=Q
- R(b);N_GUARD::QAR(A)+S(C)
- Refutation
- Q(d);
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- Q(d);N_GUARD::R1(B),XQ(d)
- R(a);N_GUARD::B(H)+R(D)
- R(b);N_GUARD::B(H)+R(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).