MESON Chess Problem Database

Problem Display
PID: 152232 (4bRn1/2K3pn/3p4/1N2kp1R/1P4B1/8/4PN1P/6Q1 w - - 0 1)

Keeble, John Frederick

Good Companions (May), 1914

4bRn1/2K3pn/3p4/1N2kp1R/1P4B1/8/4PN1P/6Q1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qg3#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qxd6#
      • 1...Kf4
        • 2.Qd4#
      • 1...Ke6
        • 2.Qxd6#
      • 1...d5!
    • 1.Qg3+?
      • 1...Ke6
        • 2.Qxd6#
      • 1...Kd5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Bxb5
        • 2.Qe4#
      • 1...Bxh5
        • 2.Qxf5#
      • 1...Sxf8
        • 2.Qxf5#
      • 1...Bf7
        • 2.Qxf5#
      • 1...Bc6
        • 2.Qxf5#
      • 1...Bg6
        • 2.Qe4#
      • 1...Bd7
        • 2.Qe4#
      • 1...Sg5
        • 2.Qxf5#
      • 1...Shf6
        • 2.Qxf5#
      • 1...Sgf6
        • 2.Qxf5#
      • 1...Sh6
        • 2.Qe4#
      • 1...Se7
        • 2.Qe4#
      • 1...d5
        • 2.Qxf5#
      • 1...g5
        • 2.Qxf5#
      • 1...g6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR2(A)
      • B(f);XS(G)::QAR1(A)
      • B(f);N_SPINP(b),XR(H)::QAR1(A),XP(b)
      • S(e);XR(J)::QAR1(A),XP(b)
      • B(f);::QAR1(A),XP(b)
      • B(f);::QAR1(A)
      • S(e);N_SPINP(b)::QAR1(A),XP(b)
      • S(e);::QAR1(A),XP(b)
      • S(g);::QAR1(A),XP(b)
      • S(g);::QAR1(A)
      • P(c);SBLOCK::QAR1(A),XP(b)
      • P(d);N_SPINP(b)::QAR1(A),XP(b)
      • P(d);::QAR1(A)
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).