MESON Chess Problem Database

Problem Display
PID: 64781 (3N2b1/1pp1pp2/q6Q/B1P1kpPp/1R1p3K/8/4N3/5R1B w - - 0 1)

Funk, Henry E

3rd HM., Good Companions (December), 1921

3N2b1/1pp1pp2/q6Q/B1P1kpPp/1R1p3K/8/4N3/5R1B

#2

10 + 10

3132 The Good Companion Two-Mover 1922
1577 Jaarboek 1931
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe2
      • 2.Bxc7#
    • 1...Qd3
      • 2.Bxc7#
    • 1...Qc4
      • 2.Bxc7#
    • 1...Qb5
      • 2.Bxc7#
    • 1...Qa7
      • 2.Bxc7#
    • 1...Qa8
      • 2.Bxc7#
    • 1...Bh7
      • 2.Sxf7#
    • 1...b6
      • 2.Sc6#
    • 1...c6
      • 2.Bc7#
    • 1...e6
      • 2.Qf6#
  • Tries
    • 1.Sc6+?
      • 1...bxc6
        • 2.Bxc7#
      • 1...Qxc6!
    • 1.Qg7+?
      • 1...Qf6
        • 2.Bxc7#
      • 1...f6!
    • 1.Qc6?
      • threat
        • 2.Bxc7#
        • 2.Qd5#
      • 1...Qxa5
        • 2.Qd5#
      • 1...bxc6
        • 2.Bxc7#
      • 1...f4
        • 2.Qe4#
        • 2.Qd5#
      • 1...Qc4
        • 2.Bxc7#
        • 2.Qxc7#
      • 1...Qb6
        • 2.Qd5#
      • 1...b6
        • 2.Qd5#
        • 2.Qxc7#
      • 1...e6
        • 2.Bxc7#
      • 1...f6
        • 2.Bxc7#
      • 1...Qxc6!
    • 1.Qh8+?
      • 1...Qf6
        • 2.Bxc7#
      • 1...f6!
  • Keys
    • 1.Sf4!
      • 1...Qxf1
        • 2.Bxc7#
      • 1...Qxa5
        • 2.Sd3#
      • 1...Qxh6
        • 2.Sd3#
      • 1...Qe6
        • 2.Sd3#
      • 1...Qe2
        • 2.Bxc7#
      • 1...Qd3
        • 2.Sxd3#
        • 2.Bxc7#
      • 1...Qc4
        • 2.Bxc7#
      • 1...Qb5
        • 2.Bxc7#
      • 1...Qb6
        • 2.Sd3#
      • 1...Qc6
        • 2.Sd3#
      • 1...Qd6
        • 2.Sd3#
      • 1...Qf6
        • 2.Sd3#
      • 1...Qg6
        • 2.Sd3#
      • 1...Qa7
        • 2.Sd3#
        • 2.Bxc7#
      • 1...Qa8
        • 2.Sd3#
        • 2.Bxc7#
      • 1...Bh7
        • 2.Sxf7#
      • 1...d3
        • 2.Re1#
      • 1...b5
        • 2.Sd3#
      • 1...b6
        • 2.Sc6#
      • 1...c6
        • 2.Bc7#
      • 1...e6
        • 2.Qf6#
      • 1...f6
        • 2.Sg6#

This anticipates 17280(1929)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_GUARD,XS(C)::B(F),XP(g)
    • Q(e);N_GUARD::B(F),XP(g)
    • B(j);N_GUARD::S(J),XP(i)
    • P(f);N_GUARD,S_CUTQ(e)::S(J)
    • P(g);S_CUTQ(e)::B(F)
    • P(h);N_GUARD,S_CUTQ(e)::QAB1(I)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • P(f);XS(J)::B(F),XP(g)
      • Refutation
        • Q(e);XS(J)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);P_PINP(H),P_SPINQ(e)::B(F),XP(g)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XB(F)::QAR1(I)
        • P(f);XQ(I)::B(F),XP(g)
        • Q(e);::QAR1(I)
        • P(h);::B(F),XP(g)
        • P(i);::B(F),XP(g)
      • Refutation
        • Q(e);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);P_PINP(H),P_SPINQ(e)::B(F),XP(g)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • S(C);
    • Vars
      • Q(e);N_GUARD,XR(A)::B(F),XP(g)
      • Q(e);N_GUARD,XB(F)::S(C)
      • Q(e);N_GUARD,XQ(I)::S(C)
      • Q(e);N_GUARD::S(C)
      • Q(e);N_GUARD::B(F),XP(g)
      • Q(e);N_GUARD,P_PINP(H)::S(C)
      • B(j);N_GUARD::S(J),XP(i)
      • P(a);S_CUTQ(e)::R(A)
      • P(f);S_CUTQ(e)::S(C)
      • P(f);N_GUARD,S_CUTQ(e)::S(J)
      • P(g);S_CUTQ(e)::B(F)
      • P(h);N_GUARD,S_CUTQ(e)::QAB1(I)
      • P(i);N_GUARD,S_CUTQ(e)::S(C)
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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).