MESON Chess Problem Database

Problem Display
PID: 80242 (5B2/8/8/1k6/2N2N2/Kp6/6B1/5Q2 w - - 0 1)

Valuska, Jan

3rd Place, Zvolen Kezmarok, 1981

5B2/8/8/1k6/2N2N2/Kp6/6B1/5Q2

#2

6 + 2

6424 Czech Album (1979-1981) 1986

SOLUTION

  • SOUND
  • Tries
    • 1.Kb2?
      • 1...Ka4
        • 2.Bc6#
      • 1...Ka6!
    • 1.Sd6+?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qg1#
        • 2.Qf2#
      • 1...Kb6!
    • 1.Qa1?
      • 1...Kxc4
        • 2.Bf1#
      • 1...Ka6
        • 2.Kb4#
      • 1...b2!
    • 1.Qd1?
      • 1...Kxc4
        • 2.Qd3#
      • 1...b2
        • 2.Qa4#
      • 1...Ka6!
    • 1.Qe1?
      • 1...Kxc4
        • 2.Qb4#
      • 1...Ka6
        • 2.Qa5#
      • 1...b2!
    • 1.Qg1?
      • 1...Kxc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Qb6#
      • 1...b2!
    • 1.Qf2?
      • 1...Kxc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Qb6#
      • 1...b2!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qc6#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::B(B)
        • K(b);S_FLIGHT::QAR(A)+K(C)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
        • P(a);OGATE::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XS(D)::QAR1(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XS(D)::QAR1(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XS(D)::QAR1(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(b);S_FLIGHT::QAB1(A)
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