MESON Chess Problem Database

Problem Display
PID: 233023 (8/2K5/8/kp4B1/pp6/8/4B3/Q7 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2010

8/2K5/8/kp4B1/pp6/8/4B3/Q7

#2

4 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qxa4#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qb6#
        • 2.Qa7#
      • 1...Ka6
        • 2.Qb6#
      • 1...a3
        • 2.Qa7#
      • 1...b3!
    • 1.Qh8?
      • threat
        • 2.Qa8#
      • 1...Ka6
        • 2.Qa8#
      • 1...b3!
    • 1.Qg1?
      • threat
        • 2.Qb6#
        • 2.Qa7#
      • 1...Ka6
        • 2.Qb6#
      • 1...a3
        • 2.Qa7#
      • 1...b3!
    • 1.Qh1?
      • threat
        • 2.Qa8#
      • 1...Ka6
        • 2.Qa8#
      • 1...b3!
  • Keys
    • 1.Bd2!
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(A),XP(a)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::QAR1(A)
        • P(a);::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::QAR1(A)
        • P(a);::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::QAR2(A)
      • Refutation
        • P(b);
  • Actual
    • B(C);
    • Vars
      • K(c);P-FLIGHT::QAR2(A),XP(a)
      • P(a);OGATEB::QAR2(A),XP(a)
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