MESON Chess Problem Database

Problem Display
PID: 58860 (2B1K3/3pQp2/PPk2q1R/npB4R/2p5/4p2b/6pb/3r1r2 w - - 0 1)

Ellerman, Arnoldo

3rd HM., Brisbane Courier, 1921

2B1K3/3pQp2/PPk2q1R/npB4R/2p5/4p2b/6pb/3r1r2

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Bb7#
    • 1...Sb7
      • 2.Bxb7#
    • 1...d6
      • 2.Qc7#
  • Tries
    • 1.Qe4+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...d5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qc5#
      • 1...Rf5
        • 2.Qxd7#
      • 1...Qd6
        • 2.Qe4#
      • 1...Qe6
        • 2.Bxd7#
      • 1...Bd6
        • 2.Qe4#
      • 1...Sb3
        • 2.Bb7#
      • 1...Sb7
        • 2.Bxb7#
      • 1...d6
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::B(G)
    • S(h);N_GUARD::B(G),XS(h)
    • P(l);N_SPINQ(k),OGATE::QAR1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(F),XR(a)
      • Refutation
        • P(l);P_SPINP(l)
  • Actual
    • B(A);
    • Threat
      • QAR1(F)
    • Vars
      • R(b);S_CUTB(f)::QAB1(F),XP(l)
      • Q(k);S_CUTP(l)::QAB(F)
      • Q(k);P_PINQ(F),S_CUTB(f)::B(G),XP(l)
      • B(d);N_SPINQ(k),SBLOCK,S_CUTP(l)::QAB(F)
      • S(h);N_GUARD::B(G)
      • S(h);N_GUARD::B(G),XS(h)
      • P(l);N_SPINQ(k),OGATE::QAR1(F)
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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).