MESON Chess Problem Database

Problem Display
PID: 225354 (8/7b/4Q3/4p1p1/5kB1/8/5K2/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Praca, 1998

8/7b/4Q3/4p1p1/5kB1/8/5K2/8

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qc4#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bg8
      • 2.Qf5#
  • Tries
    • 1.Qf7+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Kxg4!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Qg4#
      • 1...Ke4
        • 2.Qc4#
      • 1...g4
        • 2.Qxg4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...e4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
    • B(d);N_GUARD::QAR1(C),XB(d)
    • B(d);N_GUARD::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • B(d);N_GUARD,P_SPINB(d)::QAR1(C),XB(d)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
      • P(c);::QAR1(C),XP(c)
      • B(d);N_GUARD::QAR1(C),XB(d)
      • P(b);OGATEB,SBLOCK::QAB(C)
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