MESON Chess Problem Database

Problem Display
PID: 232965 (8/N2pk1K1/1P6/7Q/B7/8/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 1996

8/N2pk1K1/1P6/7Q/B7/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe8#
  • Tries
    • 1.Sc6+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#
      • 1...dxc6!
    • 1.Sc8+?
      • 1...Kd8
        • 2.Qh8#
      • 1...Ke6!
    • 1.Qg4?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qxd7#
      • 1...d5
        • 2.Qd7#
      • 1...d6
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qg6?
      • 1...d5
        • 2.Qf6#
      • 1...d6
        • 2.Qe8#
        • 2.Qf6#
      • 1...Kd8!
    • 1.Qf7+?
      • 1...Kd8
        • 2.Qxd7#
        • 2.Qf8#
      • 1...Kd6!
    • 1.Qh3?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qxd7#
      • 1...d5
        • 2.Qd7#
      • 1...d6
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qd5?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qxd7#
      • 1...d6!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxd7#
      • 1...Kd6
        • 2.Sc8#
      • 1...Kd8
        • 2.Qxd7#
        • 2.Qf8#
      • 1...Ke8
        • 2.Qxd7#
        • 2.Qf8#
      • 1...d6
        • 2.Qd7#
        • 2.Qf6#
      • 1...d5
        • 2.Qd7#
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);SBLOCK::QAR1(B)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(B),XP(a)
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
        • P(a);::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(a);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(B),XP(a)
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
        • P(a);::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(B),XP(a)
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(a)
    • Vars
      • K(b);S_FLIGHT::S(D)
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