MESON Chess Problem Database

Problem Display
PID: 276672 (B6n/1n6/KP1PP3/P1k1PQpr/2N3p1/P3N2b/1B1p2p1/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Phenix, 2023

B6n/1n6/KP1PP3/P1k1PQpr/2N3p1/P3N2b/1B1p2p1/8

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd6
      • 2.exd6#
  • Tries
    • 1.Bd4+?
      • 1...Kc6
        • 2.Bxb7#
        • 2.Qe4#
      • 1...Kxd4!
    • 1.Qf8?
      • threat
        • 2.Qc8#
      • 1...Kc6
        • 2.Qc8#
      • 1...Sxa5
        • 2.d7#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Sd8
        • 2.d7#
      • 1...Rh7!
    • 1.e7?
      • threat
        • 2.Qc8#
      • 1...Kc6
        • 2.Qc8#
      • 1...Sxa5
        • 2.e6#
      • 1...Sxd6
        • 2.exd6#
      • 1...Sd8
        • 2.e6#
      • 1...g3!
  • Keys
    • 1.Sxd2!
      • threat
        • 2.Qc2#
      • 1...Kc6
        • 2.Qc2#
      • 1...Sxa5
        • 2.Se4#
      • 1...Sxd6
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(h);OGATE,XP(J)::QAR(G)+P(F),XS(h)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(e);S_FLIGHT,XB(A)
    • Try
      • Q(G);
      • Threat
        • QAR(G)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h)::QAR2(G)
        • S(h);N_GUARD,XP(E)::QAB(G)+P(J)
        • S(h);OGATE,P_SPINS(h),XP(J)::QAB1(G),XS(h)
        • S(h);N_GUARD::QAB(G)+P(J)
      • Refutation
        • R(g);
    • Try
      • P(K);
      • Threat
        • QAR(G)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h)::QAR2(G)
        • S(h);XP(E)::QAR(G)+P(F)
        • S(h);OGATE,XP(J)::QAR(G)+P(F),XS(h)
        • S(h);::QAR(G)+P(F)
      • Refutation
        • P(d);
  • Actual
    • S(D);XP(a)
    • Threat
      • QAR(G)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(h)::QAR(G)
      • S(h);XP(E)::S(D)
      • S(h);XP(J)::S(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).