MESON Chess Problem Database

Problem Display
PID: 28441 (7Q/4p3/4p3/p2k4/BB6/8/3NK3/8 w - - 0 1)

Dombrovskis, Alfreds A

12th Place, USSR Championship, 1975-1976

7Q/4p3/4p3/p2k4/BB6/8/3NK3/8

#2

5 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qe5#
      • 1...e5!
    • 1.Bxa5?
      • 1...Kc5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qd4#
      • 1...e5!
    • 1.Qc3?
      • threat
        • 2.Bb3#
        • 2.Bc6#
        • 2.Qc5#
      • 1...e5
        • 2.Bb3#
        • 2.Qc4#
      • 1...axb4!
    • 1.Qh1+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5!
    • 1.Qh5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...e5!
    • 1.Qa8+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(E)
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
      • Refutation
        • P(c);
    • Try
      • B(D);XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Refutation
        • P(a);XB(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAB1(E)
      • P(c);::QAR1(E),XP(c)
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