MESON Chess Problem Database

Problem Display
PID: 64432 (8/6pK/8/q1p1N3/3p1Bp1/3N3b/Rp1pk3/2b3Q1 w - - 0 1)

Ellerman, Arnoldo

4th Prize=, Good Companions (November), 1920

8/6pK/8/q1p1N3/3p1Bp1/3N3b/Rp1pk3/2b3Q1

#2

6 + 10

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxg4#
    • 1...b1Q
      • 2.Qe1#
    • 1...b1S
      • 2.Sxc1#
      • 2.Qe1#
    • 1...b1B
      • 2.Qe1#
    • 1...b1R
      • 2.Qe1#
    • 1...d1Q
      • 2.Qf2#
    • 1...d1S
      • 2.Sxc1#
    • 1...d1B
      • 2.Sxc1#
      • 2.Qf2#
    • 1...d1R
      • 2.Qf2#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Sf4#
      • 1...Bf1
        • 2.Qxg4#
      • 1...b1Q
        • 2.Qe1#
      • 1...b1B
        • 2.Qe1#
      • 1...d1Q
        • 2.Qf2#
      • 1...d1S
        • 2.Sxc1#
      • 1...d1B
        • 2.Sxc1#
        • 2.Qf2#
      • 1...d1R
        • 2.Qf2#
      • 1...g5!
    • 1.Rxb2?
      • threat
        • 2.Sxc1#
        • 2.Qe1#
      • 1...Bf1
        • 2.Qxg4#
      • 1...Qc3
        • 2.Qe1#
      • 1...Qa1
        • 2.Qe1#
      • 1...Bxb2!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Sf4#
      • 1...Bf1
        • 2.Qxg4#
      • 1...b1Q
        • 2.Qe1#
      • 1...b1B
        • 2.Qe1#
      • 1...d1Q
        • 2.Qf2#
      • 1...d1S
        • 2.Sxc1#
      • 1...d1B
        • 2.Sxc1#
        • 2.Qf2#
      • 1...d1R
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD,SBLOCK::QAB(A),XP(g)
    • P(b);P_PINS(C),P_SPINP(c)::QAR1(A)
    • P(b);P_SPINP(c)::QAR1(A)
    • P(c);P_SPINP(b),SBLOCK::QAR1(A)
    • P(c);N_GUARD,P_SPINP(b)::S(C),XB(a)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(C)
      • Vars
        • B(e);N_GUARD,SBLOCK::QAB(A),XP(g)
        • P(b);P_PINS(C),P_SPINP(c)::QAR1(A)
        • P(c);P_SPINP(b),SBLOCK::QAR1(A)
        • P(c);N_GUARD,P_SPINP(b)::S(C),XB(a)
      • Refutation
        • P(j);
    • Try
      • R(B);P_PINP(c),XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);N_GUARD,SBLOCK::QAB(A),XP(g)
        • Q(h);::QAR1(A)
      • Refutation
        • B(a);N_SPINP(c),XR(B)
  • Actual
    • B(D);
    • Threat
      • S(C)
    • Vars
      • B(e);N_GUARD,SBLOCK::QAB(A),XP(g)
      • P(b);P_PINS(C),P_SPINP(c)::QAR1(A)
      • P(c);P_SPINP(b),SBLOCK::QAR1(A)
      • P(c);N_GUARD,P_SPINP(b)::S(C),XB(a)
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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).