MESON Chess Problem Database

Problem Display
PID: 135649 (7b/Bp1Q1N2/p2R2p1/N1pp2P1/1n1k1n2/2pp4/2P2P1K/3R3B w - - 0 1)

Petite, Efren

StrateGems, 2010

7b/Bp1Q1N2/p2R2p1/N1pp2P1/1n1k1n2/2pp4/2P2P1K/3R3B

#2

11 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5?
      • threat
        • 2.Sb3#
        • 2.Bxc5#
        • 2.Qc4#
        • 2.Qxb4#
        • 2.Qxc5#
      • 1...Sxc2
        • 2.Sb3#
        • 2.Bxc5#
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Sg2
        • 2.Qc4#
        • 2.Qxb4#
      • 1...Sa2
        • 2.Sb3#
        • 2.Bxc5#
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Sc6
        • 2.Sb3#
        • 2.Bxc5#
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Se6
        • 2.Sb3#
        • 2.Qc4#
        • 2.Qxb4#
      • 1...b6
        • 2.Sb3#
        • 2.Qc4#
      • 1...axb5!
    • 1.cxd3?
      • threat
        • 2.Sb3#
      • 1...Sbxd3
        • 2.Qa4#
      • 1...Sfxd3
        • 2.Qg4#
      • 1...c2!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Sb3#
      • 1...Sbxd5
        • 2.Qa4#
      • 1...Sfxd5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(J);
      • Threat
        • DUALS(5)
      • Refutation
        • P(h);XQ(J)
    • Try
      • P(C);P_PINP(f),XP(b)
      • Threat
        • S(F)
      • Vars
        • S(c);OGATEB,P_SPINS(c),XP(C)::QAR(J)
        • S(e);OGATEB,P_SPINS(e),XP(C)::QAR(J)
      • Refutation
        • P(a);
  • Actual
    • B(B);XP(g)
    • Threat
      • S(F)
    • Vars
      • S(c);OGATEB,P_SPINS(c),XB(B)::QAR(J)
      • S(e);OGATEB,P_SPINS(e),XB(B)::QAR(J)
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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).