MESON Chess Problem Database

Problem Display
PID: 69415 (K7/1p6/2R5/3k1n2/pB2pP2/2pr3B/2N1n1b1/1Q6 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1897

K7/1p6/2R5/3k1n2/pB2pP2/2pr3B/2N1n1b1/1Q6

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Rc5#
    • 1...e3
      • 2.Bxg2#
    • 1...bxc6
      • 2.Qa2#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qxb7#
      • 1...bxc6
        • 2.Qa2#
      • 1...e3
        • 2.Bxg2#
      • 1...Sed4
        • 2.Sb4#
      • 1...Sfd4
        • 2.Sb4#
        • 2.Rc5#
      • 1...b5
        • 2.Qxb5#
      • 1...Sd6!
    • 1.Bf8?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qxb7#
      • 1...bxc6
        • 2.Qa2#
      • 1...e3
        • 2.Bxg2#
      • 1...Sed4
        • 2.Sb4#
      • 1...Sfd4
        • 2.Sb4#
        • 2.Rc5#
      • 1...b5
        • 2.Qxb5#
      • 1...Sd6!
    • 1.Rd6+?
      • 1...Kc4
        • 2.Sa3#
      • 1...Sxd6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qxb7#
      • 1...bxc6
        • 2.Qa2#
      • 1...e3
        • 2.Bxg2#
      • 1...Sed4
        • 2.Sb4#
      • 1...Sfd4
        • 2.Sb4#
      • 1...Sd6
        • 2.Rc5#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(h);SBLOCK::R1(F)
    • P(f);OGATEB::B(C),XB(b)
    • P(i);SBLOCK,XR(F)::QAB(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR2(A)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(F)::QAB1(A),XP(i)
        • P(i);SBLOCK,XR(F)::QAB(A)
        • P(f);OGATEB::B(C),XB(b)
        • S(a);SBLOCK::S(B)
        • P(i);::QAR2(A),XP(i)
      • Refutation
        • S(h);
    • Try
      • B(D);
      • Threat
        • QAR2(A)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(F)::QAB1(A),XP(i)
        • P(i);SBLOCK,XR(F)::QAB(A)
        • P(f);OGATEB::B(C),XB(b)
        • S(a);SBLOCK::S(B)
        • P(i);::QAR2(A),XP(i)
      • Refutation
        • S(h);
    • Try
      • R(F);CHECK
      • Vars
        • K(g);S_FLIGHT::S(B)
      • Refutation
        • S(h);XR(F)
  • Actual
    • B(D);
    • Threat
      • QAR2(A)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(F)::QAB1(A),XP(i)
      • P(i);SBLOCK,XR(F)::QAB(A)
      • P(f);OGATEB::B(C),XB(b)
      • S(a);SBLOCK::S(B)
      • S(h);SBLOCK::S(B)
      • S(h);SBLOCK::R1(F)
      • P(i);::QAR2(A),XP(i)
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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).