MESON Chess Problem Database
Problem Display
PID: 207057 (b2K4/3n4/p1kp4/2pN1n2/2P5/1Q6/8/8 w - - 0 1)
Popa, Nicolae
Phenix, 1996
#2
4 + 7
SOLUTION
- SOUND
- Sets
- 1...Bb7
- 2.Qa4#
- 1...Se3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Se5
- 2.Qb6#
- 1...Sb6
- 2.Qxb6#
- 1...Sf6
- 2.Qb6#
- 1...Sb8
- 2.Qb6#
- 1...Sf8
- 2.Qb6#
- 1...a5
- 2.Qb5#
- 1...Bb7
- Tries
- 1.Qb1?
- 1...Sb6
- 2.Qxb6#
- 1...Se3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Qb6#
- 1...Sb8
- 2.Qb6#
- 1...Sf8
- 2.Qb6#
- 1...a5
- 2.Qb5#
- 1...Bb7!
- 1...Sb6
- 1.Qb2?
- 1...Sb6
- 2.Qxb6#
- 1...Se3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Qb6#
- 1...Sb8
- 2.Qb6#
- 1...Sf8
- 2.Qb6#
- 1...a5
- 2.Qb5#
- 1...Bb7!
- 1...Sb6
- 1.Qb4?
- 1...Sb6
- 2.Qxb6#
- 1...Se3
- 2.Se7#
- 1...Bb7
- 2.Qa4#
- 1...Sg3
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Qb6#
- 1...Sb8
- 2.Qb6#
- 1...Sf8
- 2.Qb6#
- 1...a5
- 2.Qb5#
- 1...cxb4!
- 1...Sb6
- 1.Qb8?
- threat
- 2.Qc7#
- 2.Qxa8#
- 2.Qc8#
- 1...Bb7
- 2.Qc7#
- 1...Se7
- 2.Sxe7#
- 2.Qc7#
- 2.Qxa8#
- 1...Sb6
- 2.Qc7#
- 2.Qxb6#
- 1...Sxb8!
- threat
- 1.Qb1?
- Keys
- 1.Kc8!
- threat
- 2.Qa4#
- 1...Bb7+
- 2.Qxb7#
- 1...Se7+
- 2.Sxe7#
- 1...Sb6+
- 2.Qxb6#
- 1...Sd4
- 2.Se7#
- threat
- 1.Kc8!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- B(g);SBLOCK::QAB(A)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(f);N_GUARD::QAR1(A)
- S(f);N_GUARD::QAR1(A),XS(f)
- P(c);N_GUARD::QAB1(A)
- Tries
- Try
- Q(A);
- Vars
- S(f);N_GUARD::QAR1(A),XS(f)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(f);N_GUARD::QAR1(A)
- P(c);N_GUARD::QAB1(A)
- Refutation
- B(g);
- Try
- Q(A);
- Vars
- S(f);N_GUARD::QAR1(A),XS(f)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(f);N_GUARD::QAR1(A)
- P(c);N_GUARD::QAB1(A)
- Refutation
- B(g);
- Try
- Q(A);
- Vars
- S(f);N_GUARD::QAR1(A),XS(f)
- S(b);N_GUARD::S(C)
- B(g);SBLOCK::QAB(A)
- S(b);N_GUARD::S(C),XS(b)
- S(f);N_GUARD::QAR1(A)
- P(c);N_GUARD::QAB1(A)
- Refutation
- P(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(g);::QAR1(A)
- Refutation
- S(f);XQ(A)
- Try
- Actual
- K(D);P-FLIGHT
- Threat
- QAB(A)
- Vars
- B(g);CHECK,N_GUARD::QAB1(A),XB(g)
- S(b);CHECK,N_GUARD::S(C),XS(b)
- S(f);CHECK,N_GUARD::QAR1(A),XS(f)
- S(b);N_GUARD::S(C)
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).