MESON Chess Problem Database

Problem Display
PID: 49978 (4Q3/6K1/3kp3/8/8/8/4N1B1/6B1 w - - 0 1)

Zhezherun, Bogdan Valeriovich

Schweizerische Schachzeitung, 2003

4Q3/6K1/3kp3/8/8/8/4N1B1/6B1

#2

5 + 2

56 The Problemist 2004

SOLUTION

  • SOUND
  • Tries
    • 1.Kf7?
      • 1...Ke5
        • 2.Qxe6#
      • 1...e5
        • 2.Qc6#
        • 2.Qe7#
        • 2.Qd8#
      • 1...Kc7!
    • 1.Sc3?
      • 1...Kc7
        • 2.Sb5#
      • 1...e5
        • 2.Sb5#
      • 1...Ke5!
    • 1.Sd4?
      • 1...Ke5
        • 2.Qb8#
      • 1...Kc7
        • 2.Sb5#
      • 1...e5
        • 2.Sb5#
      • 1...Kc5!
    • 1.Bh3?
      • 1...Kd5
        • 2.Qxe6#
      • 1...Ke5
        • 2.Qxe6#
      • 1...e5
        • 2.Qd7#
      • 1...Kc7!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Qc5#
      • 1...Ke7!
    • 1.Qf7?
      • 1...Ke5
        • 2.Bh2#
        • 2.Qf4#
      • 1...e5!
    • 1.Qe7+?
      • 1...Ke5
        • 2.Qc5#
      • 1...Kxe7!
  • Keys
    • 1.Qc8!
      • 1...Ke5
        • 2.Qc5#
      • 1...Ke7
        • 2.Bc5#
      • 1...e5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::S(B)
        • P(b);::S(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT::S(B)
        • P(b);::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT::QAB1(E),XP(b)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(E),XP(b)
        • P(b);SBLOCK::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAR2(E)
      • K(a);S_FLIGHT::B(A)
      • P(b);SBLOCK::B(A)
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