MESON Chess Problem Database

Problem Display
PID: 67726 (7B/1Q1p4/K7/2p4B/p1k5/r3p3/3b4/8 w - - 0 1)

Formanek, Bedrich

Pravda, 1977

7B/1Q1p4/K7/2p4B/p1k5/r3p3/3b4/8

#2

4 + 7

5865 Czech Album (1976-1978) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Be2#
    • 1...Ra2
      • 2.Be2#
    • 1...Rb3
      • 2.Qe4#
    • 1...Bc3
      • 2.Be2#
    • 1...d5
      • 2.Qb5#
  • Tries
    • 1.Bd1?
      • threat
        • 2.Qe4#
      • 1...Kd3
        • 2.Qd5#
      • 1...Bc3
        • 2.Be2#
      • 1...d5
        • 2.Qb5#
      • 1...Rd3!
    • 1.Bf7+?
      • 1...d5
        • 2.Qb5#
      • 1...Kd3!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qe4#
      • 1...Bb4
        • 2.Qd5#
      • 1...Rb3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::B(A)
    • R(b);SBLOCK::QAR2(C)
    • B(a);S_CUTR(b)::B(A)
    • P(g);SBLOCK::QAB1(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR2(C)
      • Vars
        • K(e);S_FLIGHT::QAR2(C)
        • B(a);S_CUTR(b)::B(A)
        • P(g);SBLOCK::QAB1(C)
      • Refutation
        • R(b);
    • Try
      • B(A);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB1(C)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(e);S_FLIGHT::QAB1(C)
      • B(a);SBLOCK::QAB1(C)
      • R(b);SBLOCK::QAR2(C)
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