MESON Chess Problem Database

Problem Display
PID: 65107 (KB2bN1b/3p4/p2r2n1/p1Q1n3/2R1BkpP/3P1qp1/6P1/4NR2 w - - 0 1)

Ellerman, Arnoldo

1st Prize, Good Companions (February), 1922

KB2bN1b/3p4/p2r2n1/p1Q1n3/2R1BkpP/3P1qp1/6P1/4NR2

#2

11 + 12

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Sxd3#
    • 1...Rc6
      • 2.Bxg6#
    • 1...Sxd3
      • 2.Sxd3#
      • 2.Qg5#
    • 1...Sxc4
      • 2.Qg5#
    • 1...Sc6
      • 2.Qg5#
    • 1...Sf7
      • 2.Sxg6#
  • Tries
    • 1.Bxf3+?
      • 1...Kf5
        • 2.Be4#
        • 2.Bxg4#
      • 1...Sxc4
        • 2.Bd1#
        • 2.Be2#
        • 2.Be4#
        • 2.Bc6#
        • 2.Bb7#
        • 2.Qg5#
      • 1...Rd4!
    • 1.Rb4?
      • threat
        • 2.Qc1#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Sxd3
        • 2.Sxd3#
        • 2.Qg5#
      • 1...Sc4
        • 2.Qg5#
      • 1...Sc6
        • 2.Qg5#
      • 1...Sf7
        • 2.Sxg6#
      • 1...Rc6!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Qc1#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Sxd3
        • 2.Sxd3#
        • 2.Qg5#
      • 1...Rc6
        • 2.Bxg6#
      • 1...Sc4
        • 2.Qg5#
      • 1...Sc6
        • 2.Qg5#
      • 1...Sf7
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(h);P_SPINS(f),XP(D)::S(A),XR(h)
    • R(h);N_PINB(F),P_SPINS(f)::R(E)+B(F),XS(i)
    • S(f);OGATE,P_SPINR(h),XR(E)::QAB1(H)
    • S(f);N_PINB(F),OGATE,P_SPINR(h)::QAB1(H)
    • S(f);N_GUARD,P_SPINR(h),S_CUTB(k)::S(K),XS(i)
  • Tries
    • Try
      • B(F);CHECK,N_SPINB(F),XQ(a)
      • Refutation
        • R(h);P_SPINR(h),P_SPINS(f)
    • Try
      • R(E);
      • Threat
        • QAB(H)
      • Vars
        • R(h);P_SPINS(f),XP(D)::S(A),XR(h)
        • S(f);OGATE,P_SPINR(h)::QAB1(H)
        • S(f);N_PINB(F),OGATE,P_SPINR(h)::QAB1(H)
        • S(f);N_GUARD,P_SPINR(h),S_CUTB(k)::S(K),XS(i)
      • Refutation
        • R(h);N_PINB(F),P_SPINS(f)
  • Actual
    • R(E);
    • Threat
      • QAB(H)
    • Vars
      • R(h);P_SPINS(f),XP(D)::S(A),XR(h)
      • R(h);N_PINB(F),P_SPINS(f)::R(E)+B(F),XS(i)
      • S(f);OGATE,P_SPINR(h)::QAB1(H)
      • S(f);N_PINB(F),OGATE,P_SPINR(h)::QAB1(H)
      • S(f);N_GUARD,P_SPINR(h),S_CUTB(k)::S(K),XS(i)
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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).