MESON Chess Problem Database

Problem Display
PID: 256985 (N7/1n2q3/3p4/P1kp2R1/B4pR1/PP2nN1Q/KB6/b7 w - - 0 1)

Craciun, Ovidiu

Variantim, 2021

N7/1n2q3/3p4/P1kp2R1/B4pR1/PP2nN1Q/KB6/b7

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.b4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.b4#
      • 1...Qe4
        • 2.Sxe4#
      • 1...Sc2
        • 2.Qc3#
      • 1...Bxb2!
    • 1.Sb6?
      • threat
        • 2.b4#
      • 1...Qe4
        • 2.Sd7#
      • 1...Sc2
        • 2.Rxd5#
      • 1...Sxa5!
    • 1.Qf1?
      • threat
        • 2.Qb5#
        • 2.b4#
      • 1...Qe4
        • 2.Qb5#
      • 1...Qd7
        • 2.b4#
      • 1...Qe8
        • 2.b4#
      • 1...Sc2
        • 2.Qc4#
        • 2.Qb5#
      • 1...Sc4
        • 2.Qxc4#
        • 2.b4#
      • 1...Sxf1!
  • Keys
    • 1.Rxf4!
      • threat
        • 2.b4#
      • 1...Qe4
        • 2.Qc8#
      • 1...Sc2
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);SBLOCK::P(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • P(D)
      • Vars
        • Q(h);N_GUARD::S(E),XQ(h)
        • S(b);OGATE::QAR2(F)
      • Refutation
        • B(a);XB(B)
    • Try
      • S(K);
      • Threat
        • P(D)
      • Vars
        • Q(h);N_GUARD::S(K)
        • S(b);N_GUARD::R1(J),XP(e)
      • Refutation
        • S(g);XP(I)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);::QAR1(F)
        • Q(h);::P(D)
      • Refutation
        • S(b);XQ(F)
  • Actual
    • R(H);XP(c)
    • Threat
      • P(D)
    • Vars
      • Q(h);N_GUARD::QAR(F)
      • S(b);N_GUARD::R1(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).