MESON Chess Problem Database
Problem Display
PID: 107769 (Q7/8/1PR3K1/2pNk1p1/8/8/2B1r1N1/6B1 w - - 0 1)
Boyer, Jean-Pierre
5th HM., Stella Polaris, 1970
#2
8 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Sgf4?
- threat
- 2.Re6#
- 2.Qa1#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rxc2
- 2.Re6#
- 2.Qe8#
- 1...Rf2
- 2.Qa1#
- 2.Qh8#
- 1...Re3
- 2.Qh8#
- 1...Re1
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rd2
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rh2
- 2.Re6#
- 2.Qa1#
- 2.Qb8#
- 2.Qe8#
- 1...Re4
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...c4
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...gxf4!
- threat
- 1.Sc3?
- threat
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rxg2
- 2.Qb8#
- 1...Re3
- 2.Qh8#
- 1...Rd2
- 2.Qe8#
- 2.Qh8#
- 1...Rf2!
- threat
- 1.Sdf4?
- threat
- 2.Re6#
- 2.Qa1#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rxc2
- 2.Re6#
- 2.Qe8#
- 1...Rxg2
- 2.Qb8#
- 1...Rf2
- 2.Qa1#
- 2.Qh8#
- 1...Re3
- 2.Qh8#
- 1...Re1
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rd2
- 2.Re6#
- 2.Qe8#
- 2.Qh8#
- 1...Re4
- 2.Re6#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...c4
- 2.Re6#
- 2.Qa5#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...gxf4!
- threat
- 1.Sf6?
- threat
- 2.Qa1#
- 2.Qb8#
- 2.Qe8#
- 1...Rxc2
- 2.Qb8#
- 2.Qe8#
- 1...Rxg2
- 2.Qb8#
- 1...Rf2
- 2.Qa1#
- 1...Re1
- 2.Qb8#
- 2.Qe8#
- 1...Rd2
- 2.Qe8#
- 1...Re4
- 2.Qb8#
- 2.Qe8#
- 1...c4
- 2.Qa5#
- 2.Qb8#
- 2.Qe8#
- 1...Re3!
- threat
- 1.Sc7?
- threat
- 2.Re6#
- 2.Qa1#
- 2.Qe8#
- 2.Qh8#
- 1...Rxc2
- 2.Re6#
- 2.Qe8#
- 1...Rf2
- 2.Qa1#
- 1...Re3
- 2.Qh8#
- 1...Re1
- 2.Re6#
- 2.Qe8#
- 2.Qh8#
- 1...Rd2
- 2.Re6#
- 2.Qe8#
- 2.Qh8#
- 1...Re4
- 2.Re6#
- 2.Qe8#
- 2.Qh8#
- 1...c4
- 2.Re6#
- 2.Qa5#
- 2.Qe8#
- 2.Qh8#
- 1...Rxg2!
- threat
- 1.Se7?
- threat
- 2.Qa1#
- 2.Qb8#
- 2.Qh8#
- 1...Rxg2
- 2.Qb8#
- 1...Rf2
- 2.Qa1#
- 1...Re3
- 2.Qh8#
- 1...Re1
- 2.Qb8#
- 2.Qh8#
- 1...Rd2
- 2.Qh8#
- 1...Re4
- 2.Qb8#
- 2.Qh8#
- 1...c4
- 2.Qa5#
- 2.Qb8#
- 2.Qh8#
- 1...Rxc2!
- threat
- 1.Sgf4?
- Keys
- 1.Sb4!
- threat
- 2.Qa1#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rxc2
- 2.Qe8#
- 1...Rxg2
- 2.Qb8#
- 1...cxb4
- 2.Qa5#
- 1...Rf2
- 2.Qa1#
- 1...Re3
- 2.Qh8#
- 1...Re1
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...Rd2
- 2.Qe8#
- 2.Qh8#
- 1...Re4
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- 1...c4
- 2.Qa5#
- 2.Qb8#
- 2.Qe8#
- 2.Qh8#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(C);
- Threat
- DUALS(5)
- Vars
- R(a);::QAB(H)
- Refutation
- P(d);XS(C)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(a);XS(C)::QAB(H)
- R(a);::QAB(H)
- Refutation
- R(a);
- Try
- S(D);
- Threat
- DUALS(5)
- Vars
- R(a);XS(C)::QAB(H)
- R(a);::QAB(H)
- Refutation
- P(d);XS(D)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(a);XS(C)::QAB(H)
- R(a);::QAB(H)
- R(a);::QAR(H)
- Refutation
- R(a);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- R(a);::QAB(H)
- Refutation
- R(a);XS(C)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(a);XS(C)::QAB(H)
- R(a);::QAB(H)
- Refutation
- R(a);XB(B)
- Try
- Actual
- S(D);
- Threat
- DUALS(4)
- Vars
- R(a);XB(B)::QAR(H)
- R(a);XS(C)::QAB(H)
- P(b);OGATEB,XS(D)::QAR(H)
- R(a);::QAB(H)
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).