MESON Chess Problem Database

Problem Display
PID: 84462 (2rrb3/R1npkqRN/2P1N3/6p1/2Q5/6B1/K7/8 w - - 0 1)

Funk, Jacob E

Good Companions, 1920

2rrb3/R1npkqRN/2P1N3/6p1/2Q5/6B1/K7/8

#2

8 + 8

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sef8?
      • threat
        • 2.Sg6#
      • 1...dxc6
        • 2.Qe6#
      • 1...Sd5
        • 2.Qe4#
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#
      • 1...Qxg7!
    • 1.Qb4+?
      • 1...Kxe6
        • 2.Qe4#
      • 1...d6!
    • 1.Qc5+?
      • 1...Kxe6
        • 2.Qe5#
      • 1...d6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf5#
      • 1...dxc6
        • 2.Qe6#
      • 1...Sd5
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#

This anticipates 6944(1935)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);P_SPINQ(C)
      • Threat
        • S(E)
      • Vars
        • P(c);N_GUARD,P_SPINS(b),XP(D)::QAR1(C)
        • P(c);N_PINQ(C),P_SPINS(b)::QAR(C)
      • Refutation
        • Q(e);N_PINQ(C),N_SPINQ(e),XR(G)
    • Try
      • Q(C);CHECK,P_SPINS(E)
      • Vars
        • K(d);N_SPINQ(e),OGATEB,P-FLIGHT,XS(E)::QAR2(C)
      • Refutation
        • P(c);P_SPINP(c),P_SPINS(b)
    • Try
      • Q(C);CHECK,P_SPINS(E)
      • Vars
        • K(d);N_SPINQ(e),OGATEB,P-FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • P(c);P_SPINP(c),P_SPINS(b)
  • Actual
    • S(E);P_SPINQ(C)
    • Threat
      • S(E)
    • Vars
      • P(c);N_GUARD,P_SPINS(b),XP(D)::QAR1(C)
      • S(b);N_PINQ(C),P_SPINP(c)::QAB(C)
      • P(c);N_PINQ(C),P_SPINS(b)::QAR(C)
HTML5 logo

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).