MESON Chess Problem Database
Problem Display
PID: 99894 (B2K4/4p3/4P3/8/Np1knBb1/1P1p2b1/6N1/7Q w - - 0 1)
Siotis, Nikos
Magyar Sakkelet, 1987
#2
8 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Qa1#
- 2.Qh8#
- 1...Sf2
- 2.Qa1#
- 2.Qh8#
- 1...Sc3
- 2.Qh8#
- 1...Sc5
- 2.Qa1#
- 2.Qh8#
- 1...Sg5
- 2.Qa1#
- 2.Qh8#
- 1...Sd6
- 2.Qa1#
- 2.Qh8#
- 1...Sf6
- 2.Qa1#
- 1...Sd2
- Tries
- 1.Se1?
- threat
- 2.Qxe4#
- 1...Bf3
- 2.Sxf3#
- 1...Bf5
- 2.Sf3#
- 1...Sd2
- 2.Qd5#
- 2.Qh8#
- 1...Sf2
- 2.Qd5#
- 2.Qh8#
- 1...Sc3
- 2.Qh8#
- 1...Sc5
- 2.Qd5#
- 2.Qh8#
- 1...Sg5
- 2.Qd5#
- 2.Qh8#
- 1...Sd6
- 2.Qd5#
- 2.Qh8#
- 1...Sf6!
- threat
- 1.Sh4?
- threat
- 2.Qxe4#
- 1...Bf3
- 2.Sxf3#
- 2.Sf5#
- 1...Bf5
- 2.Sf3#
- 2.Sxf5#
- 1...Sd2
- 2.Qd5#
- 2.Qa1#
- 1...Sf2
- 2.Qd5#
- 2.Qa1#
- 1...Sc5
- 2.Qd5#
- 2.Qa1#
- 1...Sg5
- 2.Qd5#
- 2.Qa1#
- 1...Sd6
- 2.Qd5#
- 2.Qa1#
- 1...Sf6
- 2.Qa1#
- 1...Sc3!
- threat
- 1.Qc1?
- threat
- 2.Qe3#
- 2.Qc4#
- 1...Bxe6
- 2.Qe3#
- 1...d2
- 2.Qc4#
- 1...Sc3
- 2.Qe3#
- 1...Bf2
- 2.Qc4#
- 1...Sd2
- 2.Qb2#
- 2.Qa1#
- 2.Qc5#
- 1...Sd6
- 2.Qb2#
- 2.Qe3#
- 2.Qa1#
- 2.Qc5#
- 1...Bxf4!
- threat
- 1.Qe1?
- threat
- 2.Qxb4#
- 2.Qe3#
- 2.Qxe4#
- 1...Bxf4
- 2.Qxe4#
- 1...Bxe6
- 2.Qe3#
- 2.Qxe4#
- 1...d2
- 2.Qe3#
- 2.Qxe4#
- 1...Sc3
- 2.Qe3#
- 2.Qe5#
- 1...Bf2
- 2.Qxb4#
- 2.Qxe4#
- 1...Be2
- 2.Qxb4#
- 1...Bf3
- 2.Qxb4#
- 2.Qe3#
- 1...Bf5
- 2.Qxb4#
- 2.Qe3#
- 1...Sd2
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Sf2
- 2.Qxb4#
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Sc5
- 2.Qxb4#
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Sg5
- 2.Qxb4#
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Sd6
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Sf6
- 2.Qxb4#
- 2.Qa1#
- 2.Qe3#
- 2.Qe5#
- 1...Bxe1!
- threat
- 1.Qg1+?
- 1...Sf2
- 2.Qa1#
- 1...Bf2!
- 1...Sf2
- 1.Se1?
- Keys
- 1.Se3!
- threat
- 2.Qxe4#
- 1...Bf3
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Sd2
- 2.Qd5#
- 2.Qa1#
- 2.Qh8#
- 1...Sf2
- 2.Qd5#
- 2.Qa1#
- 2.Qh8#
- 1...Sc3
- 2.Qh8#
- 1...Sc5
- 2.Qd5#
- 2.Qa1#
- 2.Qh8#
- 1...Sg5
- 2.Qd5#
- 2.Qa1#
- 2.Qh8#
- 1...Sd6
- 2.Qd5#
- 2.Qa1#
- 2.Qh8#
- 1...Sf6
- 2.Qa1#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::QAB(A)
- Tries
- Try
- S(B);
- Threat
- QAR1(A),XS(e)
- Vars
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- S(e);N_GUARD::QAB(A)
- Refutation
- S(e);
- Try
- S(B);
- Threat
- QAR1(A),XS(e)
- Vars
- S(e);N_GUARD::QAB(A)
- Refutation
- S(e);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);XP(F)::QAB1(A)
- P(a);::QAR1(A)
- S(e);::QAB1(A)
- B(b);::QAR1(A)
- Refutation
- B(b);XB(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(b);XB(E)::QAR1(A),XS(e)
- B(f);::QAR2(A),XP(c)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB(A)
- Refutation
- B(b);P_SPINB(b)
- Try
- Actual
- S(B);
- Threat
- QAR1(A),XS(e)
- Vars
- B(f);N_GUARD::S(B)
- B(f);N_GUARD::S(B),XB(f)
- S(e);N_GUARD::QAB(A)
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).