MESON Chess Problem Database

Problem Display
PID: 175741 (8/8/1nK5/2N1pp2/3k4/1Pp1p3/3p4/3Q4 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1898

8/8/1nK5/2N1pp2/3k4/1Pp1p3/3p4/3Q4

#2

4 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qa1#
    • 1...e2
      • 2.Qg1#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Se6#
        • 2.Qd3#
      • 1...e2
        • 2.Qd3#
      • 1...d1Q
        • 2.Se6#
        • 2.Qxd1#
      • 1...d1R
        • 2.Se6#
        • 2.Qxd1#
      • 1...e4!
    • 1.Qe2?
      • threat
        • 2.Qd3#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e4!
    • 1.Qb1?
      • threat
        • 2.Se6#
        • 2.Qd3#
      • 1...c2
        • 2.Qa1#
        • 2.Qb2#
      • 1...e2
        • 2.Qd3#
        • 2.Qg1#
      • 1...d1Q
        • 2.Se6#
        • 2.Qxd1#
      • 1...d1R
        • 2.Se6#
        • 2.Qxd1#
      • 1...e4!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...e2
        • 2.Qg1#
        • 2.Qf2#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e4!
  • Keys
    • 1.Qh1!
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...e4
        • 2.Qh8#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sa4
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qd5#
      • 1...Sa8
        • 2.Qd5#
      • 1...Sc8
        • 2.Qd5#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAB(A)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A)
      • Refutation
        • P(e);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(e);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(e);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • P(b);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
      • P(e);OGATEB::QAB(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • S(g);N_GUARD::QAR1(A)
      • S(g);N_GUARD::QAR1(A),XS(g)
      • P(f);N_GUARD::QAR1(A)
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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).