MESON Chess Problem Database
Problem Display
PID: 49238 (2bkqB2/1n1P4/Bb4p1/pN3pN1/4nQ2/3R4/4R1K1/8 w - - 0 1)
Haring, Jacobus
3rd Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1979-1980
#2
9 + 9
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Sxf7#
- 1...Qe5
- 2.Sf7#
- 1...Qe6
- 2.Sxe6#
- 1...Bg1
- 2.Qc7#
- 1...Bf2
- 2.Qc7#
- 1...Be3
- 2.Qc7#
- 1...Bd4
- 2.Qc7#
- 1...Bc5
- 2.Qc7#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Bxd7
- 2.Qb8#
- 1...Sd2
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sf2
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sc3
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sg3
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sec5
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxg5
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sed6
- 2.dxe8Q#
- 1...Sf6
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sbc5
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sbd6
- 2.dxc8Q#
- 1...Qf7
- Tries
- 1.Qe5?
- threat
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Qxd7
- 2.Sf7#
- 2.Qe7#
- 1...Qxe5
- 2.Sf7#
- 1...Bxd7
- 2.Qb8#
- 1...Sxg5
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sed6
- 2.dxe8Q#
- 1...Sbd6
- 2.dxc8Q#
- 2.dxe8Q#
- 1...Qf7
- 2.Sxf7#
- 1...Qe6
- 2.Sxe6#
- 1...Qe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Bg1
- 2.Qc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf2
- 2.Qc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Be3
- 2.Qc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bc5
- 2.Qc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ba7
- 2.Qc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bc7
- 2.Qxc7#
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sd2
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sf2
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sc3
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sg3
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sec5
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sf6
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sbc5
- 2.Qxe8#
- 2.dxc8Q#
- 2.dxc8R#
- 2.dxe8Q#
- 2.dxe8R#
- 1...a4
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...f4
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Qxf8!
- threat
- 1.Qe5?
- Keys
- 1.Qd6!
- threat
- 2.Qxb6#
- 1...Qxd7
- 2.Qe7#
- 1...Qxf8
- 2.Se6#
- 2.Qxf8#
- 1...Bxd7
- 2.Qb8#
- 1...Sexd6
- 2.dxe8Q#
- 1...Sbxd6
- 2.dxc8Q#
- 1...Qe5
- 2.Sf7#
- 1...Qe6
- 2.Sxe6#
- 1...Bg1
- 2.Qc7#
- 1...Bf2
- 2.Qc7#
- 1...Be3
- 2.Qc7#
- 1...Bd4
- 2.Qc7#
- 1...Bc5
- 2.Qc7#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(i);N_GUARD::S(F),XQ(i)
- Q(i);N_GUARD::S(F)
- B(d);N_GUARD::QAB1(D)
- B(d);N_GUARD::QAB1(D),XB(d)
- B(g);OGATEB,P_SPINB(g),XP(H)::QAR2(D)
- S(a);::PXQ(i)=Q
- S(f);::PXB(g)=Q
- Tries
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- Q(i);N_GUARD,XQ(D)::S(F)
- B(g);OGATEB,P_SPINB(g),XP(H)::QAR2(D)
- S(a);::PXQ(i)=Q
- Q(i);N_GUARD::S(F),XQ(i)
- Refutation
- Q(i);XB(I)
- Try
- Actual
- Q(D);
- Threat
- QAB(D),XB(d)
- Vars
- Q(i);N_GUARD,P_SPINQ(i),XP(H)::QAB1(D)
- B(g);OGATEB,P_SPINB(g),XP(H)::QAR2(D)
- S(a);XQ(D)::PXQ(i)=Q
- S(f);XQ(D)::PXB(g)=Q
- Q(i);N_GUARD::S(F)
- Q(i);N_GUARD::S(F),XQ(i)
- B(d);N_GUARD::QAB1(D)
- B(d);N_GUARD::QAB1(D),XB(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).