MESON Chess Problem Database

Problem Display
PID: 83475 (8/4pp2/R2N4/nKpk2qR/6P1/1pP1Qb2/4p2b/3r4 w - - 0 1)

Ellerman, Arnoldo

Good Companions (November Pageant Ty.), 1916

8/4pp2/R2N4/nKpk2qR/6P1/1pP1Qb2/4p2b/3r4

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Bxg4
      • 2.Qe4#
    • 1...Sb7
      • 2.c4#
    • 1...e6
      • 2.Qxc5#
  • Tries
    • 1.Qxf3+?
      • 1...Ke5
        • 2.Sxf7#
      • 1...Ke6!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Sxe7#
      • 1...Be4
        • 2.Qxc5#
      • 1...Be5
        • 2.Qxf3#
      • 1...Bd6
        • 2.Sb6#
      • 1...Sc6
        • 2.c4#
      • 1...e5
        • 2.Rd6#
      • 1...e6
        • 2.Se7#
      • 1...f5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::QAB1(B),XB(e)
    • B(e);N_GUARD,XP(C)::QAB1(B)
    • S(f);N_GUARD::P(A)
    • P(j);SBLOCK::QAR1(B),XP(g)
  • Tries
    • Try
      • Q(B);CHECK,XB(e)
      • Vars
        • K(h);P-FLIGHT::S(G),XP(k)
      • Refutation
        • K(h);N_SPINQ(i),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • S(G),XP(j)
    • Vars
      • B(e);SBLOCK::QAR1(B),XP(g)
      • B(c);N_SPINQ(i),SBLOCK::QAB(B),XB(e)
      • B(c);SBLOCK::S(G)
      • S(f);N_GUARD::P(A)
      • P(j);N_GUARD,N_SPINQ(i),S_CUTB(c)::R1(F)
      • P(j);::S(G)
      • P(k);N_GUARD,N_SPINQ(i)::QAB1(B)
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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).