MESON Chess Problem Database

Problem Display
PID: 65156 (BB1n4/1r3pQK/4P1N1/P1Nkp1bR/1Pp5/2Pb3p/7q/3R4 w - - 0 1)

Ellerman, Arnoldo

2nd Prize, Good Companions (November), 1921

BB1n4/1r3pQK/4P1N1/P1Nkp1bR/1Pp5/2Pb3p/7q/3R4

#2

12 + 10

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe6
      • 2.Bxb7#
    • 1...e4
      • 2.Se7#
    • 1...fxe6
      • 2.Qd7#
    • 1...fxg6
      • 2.Qd7#
    • 1...f5
      • 2.Qd7#
    • 1...f6
      • 2.Qd7#
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qd7#
      • 1...Kc6
        • 2.Qd7#
      • 1...Sxf7
        • 2.Bxb7#
      • 1...Be7
        • 2.Qf3#
      • 1...Sc6
        • 2.e7#
      • 1...e4
        • 2.Se7#

There are these versions: 83720

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(j);N_GUARD,XP(G)::B(K),XR(h)
    • P(f);N_PINS(H)::S(H)
    • P(i);OGATE,P_PINQ(I),XP(G)::QAR2(I)
    • P(i);OGATE,P_PINQ(I),XS(H)::QAR2(I)
    • P(i);N_PINS(H),OGATE,P_PINQ(I)::QAR2(I)
    • P(i);OGATE,P_PINQ(I)::QAR2(I)
  • Actual
    • Q(I);P_SPINQ(I),XP(i)
    • Threat
      • QAR2(I)
    • Vars
      • K(e);N_SPINB(b),S_FLIGHT::QAB1(I)
      • S(j);N_GUARD,XQ(I)::B(K),XR(h)
      • B(g);N_PINQ(I),P_SPINP(f)::QAB(I)
      • S(j);N_GUARD,N_SPINR(h),SBLOCK::QAB(I)+P(G)
      • P(f);N_PINS(H)::S(H)
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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).