MESON Chess Problem Database

Problem Display
PID: 61587 (8/1p6/1n1pN1p1/3k2B1/3PR3/N3P3/K1P3P1/5Q2 w - - 0 1)

Kozdon, Baldur

Deutsche Schachblatter, 1962

8/1p6/1n1pN1p1/3k2B1/3PR3/N3P3/K1P3P1/5Q2

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qf3#
    • 1...Kc6
      • 2.Qb5#
  • Tries
    • 1.Sf4+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Sc7+?
      • 1...Kxe4
        • 2.Qd3#
        • 2.Qf3#
        • 2.Qf4#
      • 1...Kc6!
    • 1.Rf4?
      • 1...Kc6
        • 2.Qb5#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...Kxe6!
    • 1.Rg4?
      • 1...Kc6
        • 2.Qb5#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...Kxe6!
    • 1.Rh4?
      • 1...Kc6
        • 2.Qb5#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...Kxe6!
    • 1.Re5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...dxe5!
    • 1.Qf5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...gxf5!
    • 1.Qf7?
      • threat
        • 2.Qxb7#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc6
        • 2.Sd8#
      • 1...Sd7!
  • Keys
    • 1.Qb1!
      • 1...Kxe4
        • 2.c4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Sa4
        • 2.Qxb7#
      • 1...Sc4
        • 2.Qxb7#
      • 1...Sd7
        • 2.Qxb7#
      • 1...Sa8
        • 2.Qxb7#
      • 1...Sc8
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XR(H)::QAB1(A)
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(H)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(J);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XS(J)
    • Try
      • R(H);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XS(J)
    • Try
      • R(H);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XS(J)
    • Try
      • R(H);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);XR(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(e)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(H)::QAB1(A)
        • K(a);S_FLIGHT::S(J)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XR(H)::QAB(A)+P(C)
      • K(a);S_FLIGHT::QAB1(A)
      • S(b);OGATE::QAB(A),XP(e)
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