MESON Chess Problem Database

Problem Display
PID: 3165 (8/7B/7K/8/6k1/6P1/5PQn/8 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Source?, 1941

8/7B/7K/8/6k1/6P1/5PQn/8

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.f3#
  • Tries
    • 1.Kg6?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
    • 1.Bb1?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
    • 1.Bc2?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
    • 1.Bd3?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
    • 1.Be4?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
    • 1.Bg6?
      • 1...Sf1
        • 2.f3#
      • 1...Sf3!
  • Keys
    • 1.Qh1!
      • 1...Kh3
        • 2.Bf5#
      • 1...Sf3
        • 2.Qh5#
      • 1...Sf1
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT::B(E)
      • S(a);OGATE,SBLOCK::QAB1(B)
      • S(a);OGATE::QAB1(B)
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