MESON Chess Problem Database
Problem Display
PID: 105570 (4nR2/p3N2B/Q7/3Nkn2/K1R2r2/4b2q/5prB/8 w - - 0 1)
Seilberger, Johann Joseph Petrus Adrianus
2nd Prize, West Virginia Chess Bulletin, 1945-1947
#2
8 + 9
| 70 | American Chess Problemist | 1949 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Rxf5#
- 1...Qh4
- 2.Rxf5#
- 1...Qh6
- 2.Rxf5#
- 1...Rg4
- 2.Rxf5#
- 1...Bc5
- 2.Bxf4#
- 1...Sh4
- 2.Re4#
- 1...Sh6
- 2.Re4#
- 1...Sfg7
- 2.Re4#
- 1...Sf6
- 2.Qxf6#
- 1...Sc7
- 2.Qf6#
- 1...Seg7
- 2.Qf6#
- 1...Qf3
- Tries
- 1.Sxf4?
- threat
- 2.Sd3#
- 2.Sfg6#
- 2.Qe6#
- 1...Qxh2
- 2.Sd3#
- 2.Rxf5#
- 2.Qe6#
- 1...Bxf4
- 2.Bxf4#
- 1...Sxe7
- 2.Re4#
- 1...Bd4
- 2.Qe6#
- 1...Qh6
- 2.Sd3#
- 2.Sfg6#
- 2.Rxf5#
- 1...Rg6
- 2.Sd3#
- 2.Sfxg6#
- 2.Sexg6#
- 1...Sg3
- 2.Sd3#
- 2.Sfg6#
- 2.Seg6#
- 1...Sd4
- 2.Sd3#
- 2.Rc5#
- 1...Sh4
- 2.Sd3#
- 2.Sfg6#
- 2.Re4#
- 1...Sfd6
- 2.Sc6#
- 1...Sh6
- 2.Sd3#
- 2.Sfg6#
- 2.Re4#
- 1...Sfg7
- 2.Sd3#
- 2.Sfg6#
- 2.Re4#
- 1...Sed6
- 2.Sc6#
- 1...Sc7
- 2.Sd3#
- 2.Sfg6#
- 2.Qf6#
- 1...Seg7
- 2.Sd3#
- 2.Sfg6#
- 2.Qf6#
- 1...Bb6!
- threat
- 1.Sg6+?
- 1...Kxd5
- 2.Bg8#
- 2.Qc6#
- 1...Rxg6!
- 1...Kxd5
- 1.Bxf5?
- threat
- 2.Re4#
- 2.Qe6#
- 1...Qxf5
- 2.Rxf5#
- 1...Qxh2
- 2.Qe6#
- 1...Rxh2
- 2.Qe6#
- 1...Bb6
- 2.Bxf4#
- 1...Qf3
- 2.Qe6#
- 1...Qg3
- 2.Qe6#
- 1...Qh6
- 2.Re4#
- 1...Rg3
- 2.Qe6#
- 1...Rg6
- 2.Re4#
- 1...Bd4
- 2.Bxf4#
- 2.Qe6#
- 1...Sf6
- 2.Qe6#
- 2.Qxf6#
- 1...Sc7
- 2.Re4#
- 2.Qf6#
- 1...Sg7
- 2.Re4#
- 2.Qf6#
- 1...Sd6!
- threat
- 1.Sxf4?
- Keys
- 1.Sc7!
- threat
- 2.Qe6#
- 1...Sxe7
- 2.Re4#
- 1...Sxc7
- 2.Qf6#
- 1...Bb6
- 2.Bxf4#
- 1...Qh6
- 2.Rxf5#
- 1...Rg6
- 2.Sxg6#
- 1...Sg3
- 2.Sg6#
- 1...Sd4
- 2.Rc5#
- 1...Sh4
- 2.Re4#
- 1...Sfd6
- 2.Sc6#
- 1...Sh6
- 2.Re4#
- 1...Sfg7
- 2.Re4#
- 1...Sed6
- 2.Sc6#
- 1...Seg7
- 2.Qf6#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- Q(d);N_GUARD::R1(H),XS(g)
- R(b);S_CUTQ(d)::R1(H),XS(g)
- B(c);N_GUARD::B(A),XR(e)
- S(g);::R1(C)
- S(i);N_GUARD::QAB1(E),XS(i)
- S(i);N_GUARD::QAB1(E)
- Tries
- Try
- S(D);N_SPINR(C),XR(e)
- Threat
- DUALS(3)
- Vars
- B(c);OGATE,P_SPINB(c),XS(D)::B(A),XB(c)
- S(g);XS(F)::R1(C)
- B(c);::QAR1(E)
- S(g);SBLOCK::S(F)
- S(i);SBLOCK::S(F)
- Refutation
- B(c);
- Try
- S(F);CHECK
- Refutation
- R(b);XS(F)
- Try
- B(G);XS(g)
- Threat
- DUALS(2)
- Vars
- Q(d);OGATE,XB(G)::R1(H),XQ(d)
- Q(d);N_SPINR(e),XB(A)::QAR1(E)
- R(b);N_SPINR(e),XB(A)::QAR1(E)
- B(c);N_GUARD::B(A),XR(e)
- Q(d);::QAR1(E)
- Q(d);N_SPINR(e)::QAR1(E)
- Q(d);::R1(C)
- R(b);N_SPINR(e)::QAR1(E)
- R(b);::R1(C)
- Refutation
- S(i);
- Try
- Actual
- S(D);
- Threat
- QAR1(E)
- Vars
- S(g);XS(F)::R1(C)
- S(i);N_GUARD,XS(D)::QAB1(E)
- B(c);N_GUARD::B(A),XR(e)
- Q(d);N_GUARD::R1(H),XS(g)
- R(b);N_GUARD::S(F),XR(b)
- S(g);N_SPINR(e),S_CUTR(b)::S(F)
- S(g);N_PINR(C),SBLOCK::R(C)
- S(g);::R1(C)
- S(g);SBLOCK::S(F)
- S(i);SBLOCK::S(F)
- S(i);N_GUARD::QAB1(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).