MESON Chess Problem Database

Problem Display
PID: 108949 (3Q1Kbk/6p1/3P4/6N1/8/8/8/8 w - - 0 1)

Milewski, Stefan

Szachista, 1999-2002

3Q1Kbk/6p1/3P4/6N1/8/8/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Kxf7#
    • 1...Bh7
      • 2.Sf7#
    • 1...g6
      • 2.Qf6#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qxg7#
      • 1...g6
        • 2.Qc3#
        • 2.Qg7#
      • 1...Bf7!
    • 1.Qe7?
      • threat
        • 2.Qxg7#
      • 1...g6
        • 2.Qf6#
        • 2.Qe5#
        • 2.Qg7#
      • 1...Bf7!
    • 1.Qd7?
      • threat
        • 2.Qxg7#
      • 1...g6
        • 2.Qg7#
      • 1...Bf7!
    • 1.Qc8?
      • 1...Bf7
        • 2.Kxf7#
      • 1...Ba2
        • 2.Qh3#
      • 1...Bb3
        • 2.Qh3#
      • 1...Bc4
        • 2.Qh3#
      • 1...Bd5
        • 2.Qh3#
      • 1...Bh7
        • 2.Sf7#
      • 1...g6
        • 2.Qc3#
      • 1...Be6!
  • Keys
    • 1.Qe8!
      • 1...Bf7
        • 2.Kxf7#
      • 1...Ba2
        • 2.Qh5#
      • 1...Bb3
        • 2.Qh5#
      • 1...Bc4
        • 2.Qh5#
      • 1...Bd5
        • 2.Qh5#
      • 1...Be6
        • 2.Qh5#
      • 1...Bh7
        • 2.Sf7#
      • 1...g6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);::QAR(C)+K(D),XB(b)
    • B(b);N_GUARD,SBLOCK::S(A)
    • P(a);OGATEB::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XP(a)
      • Refutation
        • B(b);
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XP(a)
      • Refutation
        • B(b);
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XP(a)
      • Vars
        • P(a);::QAB1(C)
      • Refutation
        • B(b);
    • Try
      • Q(C);
      • Vars
        • B(b);::QAR(C)+K(D),XB(b)
        • B(b);N_GUARD::QAR(C)
        • B(b);N_GUARD,SBLOCK::S(A)
        • P(a);OGATEB::QAB(C)
      • Refutation
        • B(b);
  • Actual
    • Q(C);
    • Vars
      • B(b);::QAR(C)+K(D),XB(b)
      • B(b);N_GUARD::QAR(C)
      • B(b);N_GUARD,SBLOCK::S(A)
      • P(a);OGATEB::QAB(C)
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