MESON Chess Problem Database

Problem Display
PID: 105713 (8/N3p3/3p4/3k1p2/8/4B1N1/K7/2Q5 w - - 0 1)

Costin, Victor

La Presse, 1897

8/N3p3/3p4/3k1p2/8/4B1N1/K7/2Q5

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • 1...Ke5
        • 2.Qxf5#
      • 1...Ke6
        • 2.Qxf5#
      • 1...f4
        • 2.Qe4#
      • 1...e5
        • 2.Qb3#
      • 1...e6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qxf5#
      • 1...dxc5!
  • Keys
    • 1.Qb1!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Ke6
        • 2.Qxf5#
      • 1...f4
        • 2.Qe4#
      • 1...e5
        • 2.Qb3#
      • 1...e6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • K(a);S_FLIGHT::QAB1(A),XP(b)
        • P(b);N_GUARD::QAB1(A)
        • P(d);SBLOCK::QAB(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A),XP(b)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A),XP(b)
      • K(a);S_FLIGHT::QAB1(A),XP(b)
      • P(b);N_GUARD::QAB1(A)
      • P(d);SBLOCK::QAB(A)
      • P(d);SBLOCK::QAR2(A)
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