MESON Chess Problem Database

Problem Display
PID: 99039 (7K/8/R3Nk2/3B1pp1/8/B5Np/7Q/b7 w - - 0 1)

Benedek, Attila

Sakkelet, 1995

7K/8/R3Nk2/3B1pp1/8/B5Np/7Q/b7

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6+
      • 2.Sd4#
    • 1...Kf7+
      • 2.Sg7#
  • Tries
    • 1.Se4+?
      • 1...Kf7+
        • 2.Sg7#
      • 1...fxe4
        • 2.Sd4#
        • 2.Sg7#
      • 1...Kg6+!
    • 1.Sh5+?
      • 1...Kf7+
        • 2.Seg7#
      • 1...Kg6+!
    • 1.Qb2+?
      • 1...Kg6
        • 2.Sd4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Sf8#
      • 1...Kf7
        • 2.Sc7#
        • 2.Sg7#
      • 1...Bxb2!
    • 1.Qf2?
      • threat
        • 2.Qxf5#
      • 1...Kg6+
        • 2.Sd4#
      • 1...Kf7+
        • 2.Sg7#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4!
    • 1.Qxh3?
      • threat
        • 2.Qxf5#
      • 1...Kg6+
        • 2.Sd4#
      • 1...Kf7+
        • 2.Sg7#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qf5#
      • 1...g4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxf5#
      • 1...Kg6+
        • 2.Sd4#
      • 1...Kf7+
        • 2.Sg7#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);CHECK,P-FLIGHT::R(E)+S(F)
    • K(e);CHECK,P-FLIGHT::B(D)+S(F)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);CHECK,P-FLIGHT::B(D)+S(F)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(e);CHECK,P-FLIGHT::B(D)+S(F)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(e);CHECK,N_SPINP(c),P-FLIGHT::R(E)+S(F)
        • K(e);CHECK,P-FLIGHT::B(D)+S(F)
        • K(e);N_SPINP(c),S_FLIGHT::QAR1(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);XP(b)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(e);CHECK,P-FLIGHT::R(E)+S(F)
        • K(e);CHECK,P-FLIGHT::B(D)+S(F)
        • K(e);S_FLIGHT::QAR1(A),XP(c)
        • P(c);::QAR1(A)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(e);CHECK,P-FLIGHT,P_SPINP(c)::R(E)+S(F)
      • K(e);CHECK,P-FLIGHT::B(D)+S(F)
      • K(e);S_FLIGHT::QAR1(A),XP(c)
      • P(c);::QAR1(A)
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