MESON Chess Problem Database

Problem Display
PID: 42847 (8/p1N1p3/4B3/k1KR4/q2p4/1Q6/p7/N7 w - - 0 1)

Majoros, Bela

Land og Folk, 1979

8/p1N1p3/4B3/k1KR4/q2p4/1Q6/p7/N7

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5+
      • 2.Qxb5#
    • 1...Qc6+
      • 2.Kxc6#
    • 1...Qd7
      • 2.Qb4#
    • 1...Qe8
      • 2.Qb4#
    • 1...Qa3+
      • 2.Qxa3#
    • 1...Qb4+
      • 2.Qxb4#
    • 1...Qc4+
      • 2.Kxc4#
    • 1...a6
      • 2.Qb6#
  • Tries
    • 1.Qxa2?
      • threat
        • 2.Sb3#
      • 1...Qa3+
        • 2.Qxa3#
      • 1...Qxa2!
    • 1.Qc3+?
      • 1...Qb4+
        • 2.Qxb4#
      • 1...dxc3!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qxa4#
      • 1...Qb5+
        • 2.Qxb5#
      • 1...Qc6+
        • 2.Kxc6#
      • 1...Qa3+
        • 2.Qxa3#
      • 1...Qb4+
        • 2.Qxb4#
      • 1...Qc4+
        • 2.Kxc4#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...Qxd7
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
    • Q(b);CHECK::R(D)+K(C),XQ(b)
    • Q(b);N_GUARD::QAB1(B)
    • Q(b);CHECK,OGATEB::QAR2(B),XQ(b)
    • Q(b);CHECK,N_GUARD::QAB1(B),XQ(b)
    • P(e);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);P_PINQ(b),XP(a)
      • Threat
        • S(A)
      • Vars
        • Q(b);CHECK,OGATEB::QAR2(B),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(b);CHECK,N_GUARD,P_SPINQ(b)::QAB1(B),XQ(b)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • B(E);
    • Threat
      • QAR1(B),XQ(b)
    • Vars
      • Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
      • Q(b);CHECK::R(D)+K(C),XQ(b)
      • Q(b);CHECK,OGATEB::QAR2(B),XQ(b)
      • Q(b);CHECK,N_GUARD::QAB1(B),XQ(b)
      • Q(b);XQ(B)::S(A),XQ(b)
      • Q(b);N_GUARD,XB(E)::QAB1(B)
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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).