MESON Chess Problem Database

Problem Display
PID: 71400 (4K3/8/5p2/2pk1p1B/2NN1P2/6P1/1QP5/8 w - - 0 1)

Castellari, Umberto

4th Comm., Die Schwalbe, 1952/II

4K3/8/5p2/2pk1p1B/2NN1P2/6P1/1QP5/8

#2

8 + 4

6388 ChessMoves 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Bf7#
    • 1...Ke4
      • 2.Bf3#
  • Tries
    • 1.Kd7?
      • 1...Kxc4
        • 2.Bf7#
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
    • 1.Ke7?
      • 1...Kxc4
        • 2.Bf7#
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
    • 1.Kd8?
      • 1...Kxc4
        • 2.Bf7#
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
    • 1.Kf8?
      • 1...Kxc4
        • 2.Bf7#
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
    • 1.Se3+?
      • 1...Kd6
        • 2.Qb6#
        • 2.Qb8#
      • 1...Ke4!
    • 1.Se2?
      • 1...Kxc4
        • 2.Bf7#
        • 2.Qb3#
      • 1...Ke4
        • 2.Qb7#
      • 1...Ke6
        • 2.Bf7#
      • 1...Kc6!
    • 1.Sf3?
      • 1...Kxc4
        • 2.Bf7#
        • 2.Qb3#
      • 1...Ke4
        • 2.Qb7#
      • 1...Ke6
        • 2.Bf7#
      • 1...Kc6!
    • 1.Sb5?
      • 1...Kxc4
        • 2.Bf7#
        • 2.Qb3#
      • 1...Kc6
        • 2.Bf3#
      • 1...Ke6
        • 2.Sc7#
        • 2.Bf7#
      • 1...Ke4!
    • 1.Be2?
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
    • 1.Qc3?
      • threat
        • 2.Bf3#
      • 1...Ke4
        • 2.Bf3#
      • 1...cxd4!
  • Keys
    • 1.Se6!
      • 1...Kxc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc6
        • 2.Bf3#
      • 1...Kxe6
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XS(D)::B(G)
    • K(b);S_FLIGHT::B(G)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT,XS(D)::B(G)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT,XS(D)::B(G)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT,XS(D)::B(G)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT,XS(D)::B(G)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
    • Try
      • Q(A);
      • Threat
        • B(G)
      • Vars
        • K(b);S_FLIGHT::B(G)
      • Refutation
        • P(a);XS(E)
  • Actual
    • S(E);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(b);S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::B(G)
      • K(b);OGATEB,S_FLIGHT,XS(E)::B(G)
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