MESON Chess Problem Database

Problem Display
PID: 67700 (q1Rb1BBK/3Q4/5p2/1p1n4/1p1kbP2/R7/r3pN2/2N1n3 w - - 0 1)

Ellerman, Arnoldo

Chess, 1948

q1Rb1BBK/3Q4/5p2/1p1n4/1p1kbP2/R7/r3pN2/2N1n3

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sxe2#
    • 1...Bc2
      • 2.Sxe2#
    • 1...Sc2
      • 2.Sxe2#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxe4#
      • 1...Sxf4
        • 2.Bc5#
      • 1...Sc3
        • 2.Bc5#
      • 1...Bb1
        • 2.Sb3#
      • 1...Bh1
        • 2.Sb3#
      • 1...Bc2
        • 2.Sxe2#
      • 1...Bg2
        • 2.Sb3#
      • 1...Bd3
        • 2.Sb3#
      • 1...Bf3
        • 2.Sb3#
      • 1...Bf5
        • 2.Sb3#
      • 1...Bg6
        • 2.Sb3#
      • 1...Bh7
        • 2.Sb3#
      • 1...Se3
        • 2.Sb3#
        • 2.Bc5#
      • 1...Sb6
        • 2.Bc5#
      • 1...Sc7
        • 2.Qb6#
      • 1...Se7
        • 2.Qxf6#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(A),XP(c)
    • B(f);S_CUTR(b)::S(A),XP(c)
    • S(a);S_CUTR(b)::S(A),XP(c)
  • Actual
    • Q(E);N_PINS(h)
    • Threat
      • QAR1(E),XB(f)
    • Vars
      • S(h);XP(D)::B(G)
      • S(h);::B(G)
      • B(f);::S(A)
      • B(f);S_CUTR(b)::S(A),XP(c)
      • S(h);N_GUARD,S_CUTB(k)::QAB(E)
      • S(h);N_GUARD,S_CUTB(k)::QAB(E),XP(i)
      • P(i);N_GUARD::QAB1(E)
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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).