MESON Chess Problem Database

Problem Display
PID: 269398 (K4B2/1pp5/1P1N4/N2B4/1k1q1bR1/1p6/8/R1Q5 w - - 0 1)

Sharabi, Bnaya

The Problemist Supplement, 2022

K4B2/1pp5/1P1N4/N2B4/1k1q1bR1/1p6/8/R1Q5

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Qc4#
    • 1...Qb2
      • 2.Qc4#
    • 1...Qf2
      • 2.Qc4#
    • 1...Qc3
      • 2.Qa3#
    • 1...Qe3
      • 2.Qc4#
    • 1...Qe5
      • 2.Qc4#
    • 1...Qxb6
      • 2.Qc4#
    • 1...Qf6
      • 2.Qc4#
    • 1...Qg7
      • 2.Qc4#
    • 1...Qh8
      • 2.Qc4#
    • 1...Qd1
      • 2.Qc4#
    • 1...Qd2
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Bd2
      • 2.Rxd4#
    • 1...Bh2
      • 2.Rxd4#
    • 1...Bg3
      • 2.Rxd4#
    • 1...Bg5
      • 2.Rxd4#
    • 1...Bh6
      • 2.Rxd4#
  • Keys
    • 1.Bc6!
      • threat
        • 2.Ra4#
      • 1...Qxa1
        • 2.Sxb7#
      • 1...Bxc1
        • 2.Sb5#
      • 1...bxc6
        • 2.Sxc6#
      • 1...Qc3
        • 2.Qa3#
      • 1...Qc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 16
  • Sets
    • Q(c);N_GUARD,P_SPINB(d)::QAR1(B)
    • Q(c);P_SPINB(d),SBLOCK::QAB1(B)
    • Q(c);N_GUARD,P_SPINB(d),XP(F)::QAR1(B)
    • Q(c);N_GUARD,P_PINB(I),P_SPINB(d)::QAR1(B)
    • Q(c);N_GUARD::QAR1(B),XQ(c)
    • B(d);OGATE,P_SPINQ(c)::R(C),XQ(c)
  • Actual
    • B(E);
    • Threat
      • R1(A)
    • Vars
      • Q(c);N_GUARD,P_PINS(D),P_SPINB(d),XR(A)::B(I)+S(G),XP(e)
      • B(d);N_GUARD,P_SPINQ(c),XQ(B)::B(I)+S(G)
      • P(e);XB(E)::S(D),XP(e)
      • Q(c);P_SPINB(d),SBLOCK::QAB1(B)
      • Q(c);N_GUARD::QAR1(B),XQ(c)
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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).