MESON Chess Problem Database

Problem Display
PID: 188509 (1B3qB1/1nRbQ3/4nP2/R1N1k1p1/1K2N1P1/2P5/3P4/8 w - - 0 1)

Hassberg, Hilde A

To Alain White, 1945

1B3qB1/1nRbQ3/4nP2/R1N1k1p1/1K2N1P1/2P5/3P4/8

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd8
      • 2.Rxd7#
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qf5#
      • 1...Qxc5+
        • 2.Rcxc5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf5#
      • 1...Qxf6
        • 2.Sd3#
      • 1...Sexc5
        • 2.Rcxc5#
      • 1...Sxc7
        • 2.Qh2#
      • 1...Sd6
        • 2.Sd3#
      • 1...Sd4
        • 2.Qh2#
      • 1...Sf4
        • 2.d4#
      • 1...Sg7
        • 2.Qh2#
      • 1...Sed8
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • S(d);N_GUARD,S_CUTQ(f)::B(K)+R(I),XB(e)
  • Actual
    • Q(J);N_PINS(c),P_SPINS(G)
    • Threat
      • QAR1(J)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINQ(f),XS(G)::B(K)+R(I),DCHECK,XQ(f)
      • K(a);S_FLIGHT::QAR1(J)
      • K(a);P-FLIGHT,P_SPINS(c)::QAR2(J)
      • Q(f);N_PINS(G),XP(H)::R(F)+S(G),DCHECK
      • S(c);OGATE,P_SPINS(c),XS(G)::B(K)+R(I),DCHECK,XS(c)
      • S(c);N_GUARD,P_SPINS(c),XR(I)::QAB(J)
      • S(d);N_PINS(G)::R(F)+S(G),DCHECK
      • S(c);N_GUARD::QAB(J)
      • S(c);N_GUARD,SBLOCK::P(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).