MESON Chess Problem Database
Problem Display
PID: 245890 (1q6/3Q3B/N2P4/2R1P1p1/1n1k1n2/1P6/7K/4RN2 w - - 0 1)
Groeneveld, Cornelis
Europa-Rochade, 1992
#2
10 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sbd3
- 2.Re4#
- 1...Sbd5
- 2.Rc4#
- 1...Sfd3
- 2.Re4#
- 1...Sfd5
- 2.Rc4#
- 1...Sbd3
- Tries
- 1.Rd1+?
- 1...Sfd3
- 2.Qg4#
- 1...Sbd3!
- 1...Sfd3
- 1.Qh3?
- threat
- 2.Re4#
- 2.Qc3#
- 2.Qe3#
- 1...Sxa6
- 2.Qc3#
- 2.Qe3#
- 1...Qb7
- 2.Qc3#
- 2.Qe3#
- 1...Qa8
- 2.Qc3#
- 2.Qe3#
- 1...Sa2
- 2.Re4#
- 2.Qe3#
- 1...Sc2
- 2.Re4#
- 2.Qc3#
- 1...Sbd3
- 2.Re4#
- 2.Qe3#
- 1...Sbd5
- 2.Re4#
- 2.Rc4#
- 1...Se2
- 2.Qe3#
- 1...Sg2
- 2.Re4#
- 2.Qc3#
- 1...Sfd3
- 2.Re4#
- 2.Qe3#
- 1...Sfd5
- 2.Re4#
- 2.Rc4#
- 1...Sg6
- 2.Qc3#
- 2.Qe3#
- 1...Sxh3!
- threat
- 1.Qa4?
- threat
- 2.Qa1#
- 1...Se2
- 2.Rd1#
- 1...Sd3
- 2.Re4#
- 1...Sd5
- 2.Rc4#
- 1...Sg6!
- threat
- 1.Qb5?
- threat
- 2.Re4#
- 2.Rc4#
- 2.Qc4#
- 1...Qc7
- 2.Re4#
- 2.Qc4#
- 2.Qxb4#
- 1...Qb7
- 2.Rc4#
- 2.Qc4#
- 1...Qa8
- 2.Rc4#
- 2.Qc4#
- 2.Qxb4#
- 1...Qc8
- 2.Re4#
- 2.Qc4#
- 2.Qxb4#
- 1...Qg8
- 2.Re4#
- 1...Se2
- 2.Rc4#
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Qxb5!
- threat
- 1.Qc6?
- threat
- 2.Rc4#
- 2.Qe4#
- 1...Sxa6
- 2.Rc4#
- 1...Sg6
- 2.Qe4#
- 1...Qb5
- 2.Qe4#
- 1...Qb7
- 2.Rc4#
- 1...Qa8
- 2.Rc4#
- 1...Qg8
- 2.Qe4#
- 1...Sbd5
- 2.Rc4#
- 1...Se2
- 2.Qe4#
- 1...Sfd5
- 2.Rc4#
- 1...Sxc6!
- threat
- 1.Qf7?
- threat
- 2.Rc4#
- 2.Qc4#
- 1...Sg6
- 2.Qc4#
- 1...Qc7
- 2.Qc4#
- 1...Qc8
- 2.Qc4#
- 1...Qg8
- 2.Rc4#
- 1...Sbd5
- 2.Rc4#
- 1...Se2
- 2.Qc4#
- 2.Qf2#
- 1...Sfd5
- 2.Rc4#
- 1...Se6
- 2.Qf2#
- 1...Qb5!
- threat
- 1.Rd1+?
- Keys
- 1.Qg4!
- threat
- 2.Qg1#
- 1...Sc2
- 2.Rd1#
- 1...Sd3
- 2.Re4#
- 1...Sd5
- 2.Rc4#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- S(a);SBLOCK::R1(A)
- S(a);SBLOCK::R1(E)
- S(c);SBLOCK::R1(A)
- S(c);SBLOCK::R1(E)
- Tries
- Try
- R(A);CHECK
- Vars
- S(c);P_SPINS(c),S_CUTS(a)::QAR(I)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- S(c);::QAB1(I)
- Refutation
- S(c);XQ(I)
- Try
- Q(I);P_PINS(a)
- Threat
- QAB(I)
- Vars
- S(c);N_GUARD::R(A)
- S(c);SBLOCK::R1(A)
- S(c);SBLOCK::R1(E)
- Refutation
- S(c);
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- Q(e);::R1(A)
- S(c);::QAR1(I)
- Refutation
- Q(e);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- S(a);XS(G)::R1(E)
- S(c);::QAR1(I)
- Q(e);::QAR1(I)
- Q(e);::R1(E)
- S(a);::R1(E)
- S(c);::R1(E)
- Refutation
- S(a);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- S(c);::QAR1(I)
- Q(e);::QAR1(I)
- Q(e);::R1(E)
- S(a);::R1(E)
- S(c);::R1(E)
- S(c);OGATE::QAB(I)
- Refutation
- Q(e);
- Try
- Actual
- Q(I);P_PINS(c)
- Threat
- QAB(I)
- Vars
- S(a);N_GUARD::R(A)
- S(a);SBLOCK::R1(A)
- S(a);SBLOCK::R1(E)
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).