MESON Chess Problem Database

Problem Display
PID: 18133 (8/8/4Bp2/4p1b1/4kpn1/7Q/4NP2/K6N w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Time & Tide, 1953

8/8/4Bp2/4p1b1/4kpn1/7Q/4NP2/K6N

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf2
      • 2.Sxf2#
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Bd5+?
      • 1...Kf5
        • 2.Qh7#
      • 1...Kxd5!
    • 1.Qb3?
      • threat
        • 2.Qd5#
        • 2.f3#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sh2
        • 2.Qd5#
      • 1...f3
        • 2.Shg3#
        • 2.Qc2#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qb1#
      • 1...Se3!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qd3#
      • 1...Kf5
        • 2.Qh7#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Se3
        • 2.f3#
      • 1...f3
        • 2.Shg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);XP(D)::S(B),XS(c)
  • Tries
    • Try
      • B(F);XS(c)
      • Threat
        • QAB1(E)
      • Vars
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • K(a);P_SPINS(c),S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT,XB(F)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(D)::S(B),XS(c)
        • S(c);::QAB1(E)
      • Refutation
        • S(c);
  • Actual
    • B(F);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT::QAB(E)
      • S(c);XP(D)::S(B),XS(c)
      • S(c);SBLOCK::P(D)
      • P(b);N_GUARD,SBLOCK::S(B)
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).