MESON Chess Problem Database

Problem Display
PID: 273058 (2n5/4b3/3N4/4kP2/QPP3P1/3K4/8/2B5 w - - 0 1)

van Damme, Emile

Probleemblad, 1952

2n5/4b3/3N4/4kP2/QPP3P1/3K4/8/2B5

#2

8 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Bf4#
    • 1...Kf6
      • 2.Qa1#
    • 1...Bxd6
      • 2.Qa1#
    • 1...Bf6
      • 2.Sf7#
    • 1...Sxd6
      • 2.Qa1#
  • Tries
    • 1.Bf4+?
      • 1...Kf6
        • 2.Qa1#
      • 1...Kxf4!
    • 1.Bg5?
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Bf4#
      • 1...Bxd6
        • 2.Qa1#
      • 1...Sxd6
        • 2.Qa1#
      • 1...Bxg5!
    • 1.Qb5+?
      • 1...Kxd6
        • 2.Bf4#
      • 1...Kf6!
    • 1.Qa5+?
      • 1...Kf6
        • 2.Qa1#
      • 1...Kxd6!
    • 1.Qa6?
      • threat
        • 2.Sf7#
      • 1...Kf6
        • 2.Qa1#
      • 1...Bxd6
        • 2.Qa1#
      • 1...Sxd6
        • 2.Qa1#
      • 1...Sb6!
  • Keys
    • 1.Qe8!
      • 1...Kxd6
        • 2.Bf4#
      • 1...Kf6
        • 2.Qh8#
      • 1...Sxd6
        • 2.Qxe7#
      • 1...Sb6
        • 2.Qxe7#
      • 1...Sa7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(a);N_GUARD,S_FLIGHT,XS(H)::B(A)
    • K(a);N_GUARD,S_FLIGHT::QAB(C)
    • B(b);SBLOCK,XS(H)::QAB(C)
    • B(b);SBLOCK::S(H)
    • S(c);SBLOCK,XS(H)::QAB(C)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • K(a);S_FLIGHT,XB(A)
    • Try
      • B(A);
      • Threat
        • S(H)
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(H)::B(A)
        • B(b);SBLOCK,XS(H)::QAB(C)
        • S(c);SBLOCK,XS(H)::QAB(C)
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(H)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • K(a);S_FLIGHT,XS(H)
    • Try
      • Q(C);
      • Threat
        • S(H)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(C)
        • B(b);SBLOCK,XS(H)::QAB(C)
        • S(c);SBLOCK,XS(H)::QAB(C)
      • Refutation
        • S(c);
  • Actual
    • Q(C);P_PINB(b)
    • Vars
      • K(a);N_GUARD,N_SPINB(b),S_FLIGHT,XS(H)::B(A)
      • K(a);N_GUARD,N_SPINB(b),S_CUTB(b),S_FLIGHT::QAB(C)
      • S(c);N_GUARD,XS(H)::QAR2(C),XB(b)
      • S(c);N_GUARD::QAR2(C),XB(b)
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