MESON Chess Problem Database

Problem Display
PID: 87590 (2Q5/3p1p2/4k3/8/2b2K2/B7/8/8 w - - 0 1)

Kormiltsev, Mikhail Konstantinovich

Problemist Pribuzhya, 1990

2Q5/3p1p2/4k3/8/2b2K2/B7/8/8

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd7#
    • 1...f6
      • 2.Qg8#
  • Tries
    • 1.Qa6+?
      • 1...Kd5
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Bxa6!
    • 1.Qxc4+?
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qc6+?
      • 1...d6
        • 2.Qxd6#
      • 1...dxc6!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qxd7#
        • 2.Qe4#
      • 1...Kf6!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf6
        • 2.Qh6#
      • 1...d6
        • 2.Qxd6#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::QAR2(C),XP(c)
    • P(d);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
        • P(c);P_SPINP(c)::QAR1(C),XP(c)
      • Refutation
        • B(a);XQ(C)
    • Try
      • Q(C);CHECK,N_PINP(c),XB(a)
      • Vars
        • P(c);N_GUARD,P_SPINP(c)::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • P(c);P_SPINP(c)::QAR1(C),XP(c)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • QAR1(C)
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);P-FLIGHT,P_SPINP(d)::QAR2(C)
      • P(c);::QAR1(C),XP(c)
      • P(d);OGATE::QAB1(C),XP(d)
      • P(d);OGATEB,SBLOCK::QAB(C)
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