MESON Chess Problem Database

Problem Display
PID: 137884 (3N4/R3p2q/8/Pknb3R/N2Q4/b1Bp4/2P1B3/4K3 w - - 0 1)

Ellerman, Arnoldo

HM., Norsk Sjakkblad, 1926

3N4/R3p2q/8/Pknb3R/N2Q4/b1Bp4/2P1B3/4K3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qb4#
    • 1...Bb2
      • 2.Qb4#
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bc4
      • 2.Qd7#
    • 1...Se4
      • 2.Bxd3#
    • 1...Sa6
      • 2.Rb7#
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sc3#
      • 1...Sxa4
        • 2.c4#
      • 1...Bb4
        • 2.Qxb4#
      • 1...Bc4
        • 2.Qd7#
      • 1...Bb2
        • 2.Qb4#
      • 1...Se4
        • 2.Bxd3#
      • 1...Sa6
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR1(F)
    • B(a);N_GUARD,P_PINB(D)::QAR1(F),XB(a)
    • B(e);N_SPINP(b),OGATE,P_SPINS(d),SBLOCK::QAB(F)
    • S(d);N_GUARD,P_SPINB(e),S_CUTQ(g)::B(C),XP(b)
    • S(d);N_GUARD,P_SPINB(e),SBLOCK::R(I)
  • Actual
    • B(D);
    • Threat
      • S(E)
    • Vars
      • S(d);P_SPINB(e),SBLOCK,XS(E)::P(B)
      • B(a);N_GUARD,P_PINB(D)::QAR1(F),XB(a)
      • B(e);N_SPINP(b),OGATE,P_SPINS(d),SBLOCK::QAB(F)
      • B(a);N_GUARD::QAR1(F)
      • S(d);N_GUARD,P_SPINB(e),S_CUTQ(g)::B(C),XP(b)
      • S(d);N_GUARD,P_SPINB(e),SBLOCK::R(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).