MESON Chess Problem Database

Problem Display
PID: 118200 (2B5/6N1/4n3/3P3P/1p4Pk/1P2B3/QK4PP/8 w - - 0 1)

Petkov, Petko Andonov

Themes-64, 1959

2B5/6N1/4n3/3P3P/1p4Pk/1P2B3/QK4PP/8

#2

11 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Bf2#
  • Tries
    • 1.Qb1?
      • 1...Kxg4
        • 2.Qe4#
      • 1...Sxg7
        • 2.Qe1#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sc5
        • 2.Qe1#
      • 1...Sg5
        • 2.Bf2#
        • 2.Qe1#
      • 1...Sc7
        • 2.Qe1#
      • 1...Sd8
        • 2.Qe1#
      • 1...Sf8
        • 2.Qe1#
      • 1...Sf4!
    • 1.Qa5?
      • 1...Kxg4
        • 2.Qxb4#
      • 1...Sxg7
        • 2.Qd8#
      • 1...Sf4
        • 2.Qd8#
      • 1...Sd4
        • 2.Qd8#
      • 1...Sc5
        • 2.Qd8#
      • 1...Sg5
        • 2.Bf2#
      • 1...Sd8
        • 2.Qxd8#
      • 1...Sf8
        • 2.Qd8#
      • 1...Sc7!
    • 1.Qa7?
      • 1...Kxg4
        • 2.Qd4#
      • 1...Sxg7
        • 2.Qe7#
      • 1...Sf4
        • 2.Qe7#
      • 1...Sd4
        • 2.Qe7#
      • 1...Sc5
        • 2.Qe7#
      • 1...Sg5
        • 2.Bf2#
      • 1...Sd8
        • 2.Qe7#
      • 1...Sf8
        • 2.Qe7#
      • 1...Sc7!
  • Keys
    • 1.Qa6!
      • 1...Kxg4
        • 2.Qc4#
      • 1...Sxg7
        • 2.Qf6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sd4
        • 2.Qf6#
      • 1...Sc5
        • 2.Qf6#
      • 1...Sg5
        • 2.Bf2#
      • 1...Sc7
        • 2.Qf6#
      • 1...Sd8
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(F)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINS(c),XP(G)::QAR2(A)
        • S(c);XS(J)::QAB(A)
        • S(c);::QAB(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINS(c),XP(G)::QAR(A),XP(a)
        • S(c);N_GUARD,XS(J)::QAB(A)
        • S(c);N_GUARD::QAB(A)
        • S(c);SBLOCK::B(F)
        • S(c);N_GUARD::QAB(A),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINS(c),XP(G)::QAR(A)
        • S(c);N_GUARD,XS(J)::QAB(A)
        • S(c);N_GUARD::QAB(A)
        • S(c);SBLOCK::B(F)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINS(c),XP(G)::QAR(A)
      • S(c);OGATE,XS(J)::QAB(A)
      • S(c);OGATE::QAB(A)
      • S(c);SBLOCK::B(F)
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