MESON Chess Problem Database

Problem Display
PID: 9579 (1B4B1/8/2p1Np2/p2k1rbQ/6p1/1P6/K1N1P3/7b w - - 0 1)

Blake, Percy Francis

Bolton Football and Field, 1906

1B4B1/8/2p1Np2/p2k1rbQ/6p1/1P6/K1N1P3/7b

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qxf5#
    • 1...Bd2
      • 2.Qxf5#
    • 1...Be3
      • 2.Qxf5#
    • 1...Bf4
      • 2.Qxh1#
    • 1...Bh4
      • 2.Qxf5#
    • 1...Bh6
      • 2.Qxf5#
  • Tries
    • 1.Se3+?
      • 1...Bxe3
        • 2.Qxf5#
      • 1...Ke4!
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qxh1#
      • 1...Kc5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Sc5#
      • 1...c5
        • 2.Qb7#
      • 1...Rf1
        • 2.Qd3#
      • 1...Rf2
        • 2.Qd3#
      • 1...Rf3
        • 2.e4#
      • 1...Rf4
        • 2.Se3#
      • 1...Re5
        • 2.Qd3#
      • 1...Be4
        • 2.Qd7#
      • 1...Bf4
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • B(f);OGATE,P_SPINR(e)::QAR2(E),XR(e)
    • B(f);P_SPINR(e)::QAB(E),XB(a)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • B(f);OGATE,P_SPINR(e),XS(B)::QAR2(E),XR(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB(E),XB(a)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR2(E),XR(e)
    • Vars
      • K(d);P_SPINR(e),S_FLIGHT::S(F)
      • P(g);OGATEB::QAB(E)
      • R(e);OGATE::QAR2(E)
      • R(e);S_CUTB(a)::P(C)
      • R(e);S_CUTB(f)::S(B)
      • B(a);SBLOCK::QAR2(E)
      • B(f);S_CUTR(e)::QAB(E),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).