MESON Chess Problem Database

Problem Display
PID: 59990 (K3Nb2/2Bp1n2/4k1P1/3Nr3/5PP1/7B/Q1ppb3/3qRr2 w - - 0 1)

Ellerman, Arnoldo

4th Prize, Brisbane Courier, 1926

K3Nb2/2Bp1n2/4k1P1/3Nr3/5PP1/7B/Q1ppb3/3qRr2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.gxf5#
    • 1...Rh5
      • 2.gxh5#
    • 1...Bf3
      • 2.f5#
    • 1...Ba3
      • 2.Sg7#
    • 1...Bb4
      • 2.Sg7#
    • 1...Bc5
      • 2.Sg7#
    • 1...Bd6
      • 2.Sg7#
    • 1...Be7
      • 2.Sg7#
    • 1...Bg7
      • 2.Sxg7#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Sdc7#
      • 1...Rxd5
        • 2.g5#
      • 1...Bxg4
        • 2.Se7#
      • 1...Bxd6
        • 2.Sg7#
      • 1...Sxd6
        • 2.Sec7#
      • 1...Bf3
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(f);OGATE,P_SPINB(e)::P(E),XR(f)
    • R(f);OGATE,P_SPINB(e)::B(C)+P(E),XR(f)
    • B(e);P_PINS(F),P_SPINR(f),S_CUTR(b)::P(D)
    • B(j);N_GUARD::S(J)
    • B(j);N_GUARD::S(J),XB(j)
  • Actual
    • B(H);
    • Threat
      • QAB(B)+S(F),DCHECK
    • Vars
      • R(f);N_GUARD,P_SPINB(e),P_SPINR(f),XS(F)::B(C)+P(E)
      • B(e);N_GUARD,P_SPINB(e),P_SPINR(f),XP(E)::QAB(B)+S(F)
      • B(j);N_GUARD,SBLOCK,XB(H)::S(J)
      • S(i);SBLOCK,XB(H)::S(J)
      • B(e);P_PINS(F),P_SPINR(f),S_CUTR(b)::P(D)
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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).