MESON Chess Problem Database

Problem Display
PID: 10773 (Bb1n1N2/1qP4K/1pkPp3/1p1R3Q/7n/Bp1N1p2/2b3p1/1rR4r w - - 0 1)

Hassberg, Eric Manfred

Chess Life, 1968

Bb1n1N2/1qP4K/1pkPp3/1p1R3Q/7n/Bp1N1p2/2b3p1/1rR4r

#2

10 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa8
      • 2.cxd8S#
    • 1...Sf5
      • 2.Sb4#
    • 1...Sg6
      • 2.Sb4#
    • 1...Sf7
      • 2.cxb8S#
    • 1...b2
      • 2.Rxc2#
    • 1...exd5
      • 2.Qe8#
  • Tries
    • 1.Bxb7+?
      • 1...Sxb7
        • 2.cxb8S#
      • 1...Kxb7!
    • 1.Rc5+?
      • 1...bxc5
        • 2.Qxc5#
      • 1...Kxd6!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qe8#
      • 1...Qxa8
        • 2.cxd8S#
      • 1...Sf5
        • 2.Se5#
      • 1...Sg6
        • 2.Sb4#
      • 1...Sf7
        • 2.cxb8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(l);N_PINP(G),N_SPINQ(l),XB(I)::PXS(n)=S
    • S(g);N_PINS(C),P_PINQ(E)::S(C)
    • S(n);N_PINP(G)::PXB(m)=S
    • P(e);N_GUARD::R(A),XB(c)
    • P(k);SBLOCK,XR(D)::QAB(E)
  • Tries
    • Try
      • B(I);CHECK,N_SPINP(G),XQ(l)
      • Vars
        • S(n);N_GUARD,SBLOCK,XB(I)::PXB(m)=S
      • Refutation
        • K(j);N_SPINB(c),S_FLIGHT,XB(I)
    • Try
      • R(D);CHECK,N_PINB(c)
      • Vars
        • P(i);OGATE,XR(D)::QAR1(E),XP(i)
      • Refutation
        • K(j);N_SPINQ(l),P-FLIGHT,XP(F)
  • Actual
    • R(D);
    • Threat
      • QAB(E)
    • Vars
      • Q(l);N_PINP(G),N_SPINQ(l),XB(I)::PXS(n)=S
      • S(g);N_PINS(C),P_PINQ(E)::S(C)
      • S(n);N_PINP(G)::PXB(m)=S
HTML5 logo

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).