MESON Chess Problem Database

Problem Display
PID: 71434 (B7/2R3q1/4n3/Q3P3/2pkP1p1/3N2K1/bb2PP2/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1952

B7/2R3q1/4n3/Q3P3/2pkP1p1/3N2K1/bb2PP2/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Qxe5#
    • 1...Qf6
      • 2.Rd7#
    • 1...Qh6
      • 2.Rd7#
    • 1...Qh8
      • 2.Rd7#
    • 1...Qg5
      • 2.Rd7#
    • 1...Qg6
      • 2.Rd7#
    • 1...Qd7
      • 2.Rxd7#
    • 1...Qg8
      • 2.Rd7#
    • 1...Bc3
      • 2.Qd5#
    • 1...cxd3
      • 2.e3#
  • Tries
    • 1.Rxc4+?
      • 1...Kxc4
        • 2.Qb4#
      • 1...Bxc4!
    • 1.Qb6+?
      • 1...Kc3
        • 2.Qxb2#
      • 1...Sc5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.e3#
      • 1...Qxe5+
        • 2.Sf4#
      • 1...cxd3
        • 2.Qxb2#
      • 1...Qh6
        • 2.Rd7#
      • 1...Qg5
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(g);CHECK,OGATE,XP(G)::QAB1(F),XQ(g)
    • Q(g);N_GUARD::R(H)
    • Q(g);N_GUARD::R(H),XQ(g)
    • B(b);SBLOCK::QAR1(F)
    • P(c);SBLOCK,XS(C)::P(A)
  • Tries
    • Try
      • R(H);CHECK,XP(c)
      • Vars
        • K(d);P-FLIGHT,XR(H)::QAR1(F)
      • Refutation
        • B(a);XR(H)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::QAB1(F),XB(b)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • Q(F);
    • Threat
      • P(A)
    • Vars
      • Q(g);CHECK,SBLOCK,XP(G)::QAR(F)+S(C)
      • P(c);N_GUARD,P_SPINP(c),XS(C)::QAB(F),XB(b)
      • Q(g);N_GUARD::R(H)
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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).