MESON Chess Problem Database

Problem Display
PID: 157230 (3N2rk/2q3bp/8/8/2B1N3/3Q4/1B6/1K4R1 w - - 0 1)

Petite, Efren

Problemas, 1952

3N2rk/2q3bp/8/8/2B1N3/3Q4/1B6/1K4R1

#2

7 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Sf7#
    • 1...Qg3
      • 2.Sf7#
    • 1...Qa5
      • 2.Sf7#
    • 1...Qe5
      • 2.Sf7#
    • 1...Qb6
      • 2.Sf7#
    • 1...Qd6
      • 2.Sf7#
    • 1...Qb8
      • 2.Sf7#
    • 1...Qc5
      • 2.Sf7#
    • 1...Qc6
      • 2.Sf7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qc8
      • 2.Sf7#
    • 1...Bxb2
      • 2.Rxg8#
    • 1...Bc3
      • 2.Rxg8#
    • 1...Bd4
      • 2.Rxg8#
    • 1...Be5
      • 2.Rxg8#
    • 1...Bf6
      • 2.Rxg8#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxh7#
      • 1...Bxf6
        • 2.Rxg8#
      • 1...Qh2
        • 2.Sf7#
      • 1...Bh6
        • 2.Rxg8#
      • 1...Bf8
        • 2.Rxg8#
      • 1...h5
        • 2.Qh7#
      • 1...h6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 14
  • Sets
    • Q(a);N_GUARD::S(G)
    • Q(a);N_GUARD,N_SPINB(b)::S(G)
    • Q(a);N_GUARD,P_PINB(C)::S(G)
    • Q(a);N_GUARD::S(G),XQ(a)
    • B(b);N_SPINB(b),OGATE,XB(C)::R1(B),XR(d)
    • B(b);OGATE::R1(B),XR(d)
  • Actual
    • S(F);N_PINB(b)
    • Threat
      • QAR1(D),XP(c)
    • Vars
      • B(b);OGATE,P_SPINB(b),XS(F)::R1(B),XR(d)
      • Q(a);N_GUARD::S(G)
      • B(b);OGATE::R1(B),XR(d)
      • P(c);::QAR1(D)
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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).