MESON Chess Problem Database

Problem Display
PID: 207860 (8/3Np2B/2P1P3/2PkB3/Q2N4/8/1P1p3K/1nn5 w - - 0 1)

Sukhodolov, Nikolai

Zadachi i Etyudi, 2019

8/3Np2B/2P1P3/2PkB3/Q2N4/8/1P1p3K/1nn5

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qb3#
      • 2.Qxa2#
    • 1...Se2
      • 2.Qb3#
      • 2.Qa2#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sd3
      • 2.Qb3#
      • 2.Qa2#
  • Tries
    • 1.Sb6+?
      • 1...Kxc5
        • 2.Qb5#
        • 2.Qa5#
      • 1...Kxe5!
    • 1.Qc2?
      • threat
        • 2.Be4#
      • 1...Sd3
        • 2.Qb3#
      • 1...Sc3!
    • 1.Qa2+?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sxa2!
    • 1.b3?
      • threat
        • 2.Qc4#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...Sa3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Kxc6
        • 2.Be4#
      • 1...Kxe6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAB(C),XS(b)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • K(d);P-FLIGHT,XB(F)
    • Try
      • Q(C);
      • Threat
        • B(J)
      • Vars
        • S(b);N_GUARD::QAB(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(C),XS(b)
      • Refutation
        • S(b);XQ(C)
    • Try
      • P(A);
      • Threat
        • QAB1(C)
      • Vars
        • S(b);OGATE,XP(A)::QAB(C),XS(b)
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);S_FLIGHT,XP(G)::B(J)
      • K(d);S_FLIGHT,XP(H)::QAB(C)
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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).