MESON Chess Problem Database
Problem Display
PID: 1064 (r7/1Q6/3N4/k2p4/8/P1n5/1N6/K7 w - - 0 1)
Hernitz, Zvonimir
The Problemist Supplement, 2000
#2
5 + 4
SOLUTION
- SOUND
- Sets
- 1...Ra6
- 2.Qb4#
- 1...Ra7
- 2.Qxa7#
- 1...Rb8
- 2.Qa7#
- 1...Rc8
- 2.Qa7#
- 1...Rd8
- 2.Qa7#
- 1...Re8
- 2.Qa7#
- 1...Rf8
- 2.Qa7#
- 1...Rg8
- 2.Qa7#
- 1...Rh8
- 2.Qa7#
- 1...Sb1
- 2.Qb5#
- 1...Sd1
- 2.Qb5#
- 1...Sa2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sa4
- 2.Qb5#
- 1...Se4
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...d4
- 2.Sdc4#
- 1...Ra6
- Tries
- 1.Sd1?
- 1...Ka4
- 2.Qb4#
- 1...Sxd1
- 2.Qb5#
- 1...Ra6
- 2.Qb4#
- 1...Ra7
- 2.Qxa7#
- 1...Rb8
- 2.Qa7#
- 1...Rc8
- 2.Qa7#
- 1...Rd8
- 2.Qa7#
- 1...Re8
- 2.Qa7#
- 1...Rf8
- 2.Qa7#
- 1...Rg8
- 2.Qa7#
- 1...Rh8
- 2.Qa7#
- 1...Sb1
- 2.Qb5#
- 1...Sa2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sa4
- 2.Qb5#
- 1...Se4
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...d4!
- 1...Ka4
- 1.Sd3?
- 1...Ka4
- 2.Qb4#
- 1...Ra6
- 2.Qb4#
- 1...Ra7
- 2.Qxa7#
- 1...Rb8
- 2.Qa7#
- 1...Rc8
- 2.Qa7#
- 1...Rd8
- 2.Qa7#
- 1...Re8
- 2.Qa7#
- 1...Rf8
- 2.Qa7#
- 1...Rg8
- 2.Qa7#
- 1...Rh8
- 2.Qa7#
- 1...Sb1
- 2.Qb5#
- 1...Sd1
- 2.Qb5#
- 1...Sa2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sa4
- 2.Qb5#
- 1...Se4
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...d4!
- 1...Ka4
- 1.Sbc4+?
- 1...Ka4
- 2.Qb4#
- 1...dxc4!
- 1...Ka4
- 1.Sd1?
- Keys
- 1.Sa4!
- threat
- 2.Qxa8#
- 1...Kxa4
- 2.Qb4#
- 1...Sxa4
- 2.Qb5#
- 1...Ra6
- 2.Qb4#
- 1...Ra7
- 2.Qxa7#
- 1...Rb8
- 2.Qa7#
- 1...Rc8
- 2.Qa7#
- 1...Rd8
- 2.Qa7#
- 1...Re8
- 2.Qa7#
- 1...Rf8
- 2.Qa7#
- 1...Rg8
- 2.Qa7#
- 1...Rh8
- 2.Qa7#
- 1...Sb5
- 2.Qxb5#
- threat
- 1.Sa4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(d);SBLOCK::QAB1(E)
- R(d);N_GUARD::QAR2(E),XR(d)
- R(d);N_GUARD::QAR2(E)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- P(c);N_GUARD::S(D)
- Tries
- Try
- S(B);
- Vars
- K(b);P-FLIGHT::QAR1(E)
- S(a);N_GUARD,XS(B)::QAR1(E)
- R(d);SBLOCK::QAB1(E)
- R(d);N_GUARD::QAR2(E),XR(d)
- R(d);N_GUARD::QAR2(E)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- P(c);
- Try
- S(B);
- Vars
- K(b);P-FLIGHT::QAR1(E)
- R(d);SBLOCK::QAB1(E)
- R(d);N_GUARD::QAR2(E),XR(d)
- R(d);N_GUARD::QAR2(E)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- P(c);
- Try
- S(B);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(E)
- Refutation
- P(c);XS(B)
- Try
- Actual
- S(B);
- Threat
- QAR(E),XR(d)
- Vars
- K(b);P-FLIGHT,XS(B)::QAR1(E)
- S(a);N_GUARD,XS(B)::QAR1(E)
- R(d);SBLOCK::QAB1(E)
- R(d);N_GUARD::QAR2(E),XR(d)
- R(d);N_GUARD::QAR2(E)
- S(a);N_GUARD::QAR1(E),XS(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).