MESON Chess Problem Database

Problem Display
PID: 270318 (n2B4/K4Rpb/3k1p2/5n1Q/NN1p2p1/8/8/4RB2 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Probleemblad, 2021

n2B4/K4Rpb/3k1p2/5n1Q/NN1p2p1/8/8/4RB2

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qc5#
      • 2.Qd5#
    • 1...Sh4
      • 2.Qc5#
      • 2.Qd5#
    • 1...Sh6
      • 2.Qc5#
      • 2.Qd5#
    • 1...Sb6
      • 2.Bc7#
    • 1...Sc7
      • 2.Bxc7#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Re6#
      • 1...Se3
        • 2.Qc5#
      • 1...Sc7
        • 2.Bxc7#
      • 1...Se7!
    • 1.Bb5?
      • threat
        • 2.Rd7#
      • 1...Se7
        • 2.Qc5#
      • 1...Sb6
        • 2.Bc7#
      • 1...Se3!
    • 1.Qh2+?
      • 1...Sg3
        • 2.Qxg3#
      • 1...g3!
    • 1.Qxf5?
      • threat
        • 2.Re6#
        • 2.Rd7#
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sb6
        • 2.Bc7#
        • 2.Re6#
        • 2.Qe6#
        • 2.Qf4#
        • 2.Qc5#
      • 1...Sc7
        • 2.Bxc7#
        • 2.Be7#
        • 2.Rd7#
        • 2.Qd7#
        • 2.Qf4#
        • 2.Qc5#
      • 1...g5
        • 2.Re6#
        • 2.Rxf6#
        • 2.Rd7#
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qxf6#
      • 1...Bxf5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sb7#
      • 1...Kxc5
        • 2.Be7#
      • 1...Se3
        • 2.Rd7#
      • 1...Se7
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD::B(H)
    • S(h);N_GUARD::B(H),XS(h)
  • Tries
    • Try
      • B(B);
      • Threat
        • R1(A)
      • Vars
        • S(c);OGATE::QAB1(E)
        • S(h);N_GUARD::B(H),XS(h)
      • Refutation
        • S(c);
    • Try
      • B(B);
      • Threat
        • R1(G)
      • Vars
        • S(c);OGATE::QAB1(E)
        • S(h);N_GUARD::B(H)
      • Refutation
        • S(c);
    • Try
      • Q(E);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(E),XS(c)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(E);XS(c)
      • Threat
        • DUALS(7)
      • Refutation
        • B(g);XQ(E)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(d);N_GUARD,P_SPINS(c),S_FLIGHT,XS(C)::B(H)
      • S(c);::R1(G)
      • S(c);::R1(A)
HTML5 logo

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).