MESON Chess Problem Database

Problem Display
PID: 16231 (8/K2B4/8/2kp4/2N4Q/8/N7/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 2000

8/K2B4/8/2kp4/2N4Q/8/N7/8

#2

5 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se3?
      • threat
        • 2.Qb4#
      • 1...d4
        • 2.Qe7#
      • 1...Kd6!
    • 1.Sb6?
      • threat
        • 2.Qb4#
      • 1...d4
        • 2.Qe7#
      • 1...Kd6!
    • 1.Qe4?
      • 1...dxc4
        • 2.Qe5#
      • 1...d4
        • 2.Qc6#
      • 1...dxe4!
    • 1.Qf4?
      • 1...dxc4
        • 2.Qe5#
      • 1...d4!
    • 1.Qh8?
      • 1...Kxc4
        • 2.Qc3#
      • 1...dxc4
        • 2.Qe5#
      • 1...d4!
  • Keys
    • 1.Qf6!
      • 1...Kxc4
        • 2.Qc3#
      • 1...dxc4
        • 2.Qe5#
      • 1...d4
        • 2.Qc6#

Anticipated by 104541(1930), 149816(1974)

This anticipates 39681(2001)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);SBLOCK::QAB(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);SBLOCK::QAB(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);OGATEB,SBLOCK,XS(B)::QAR2(C)
        • P(b);OGATE,SBLOCK::QAR1(C)
      • Refutation
        • P(b);XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(b);OGATEB,SBLOCK,XS(B)::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR1(C)
        • P(b);OGATEB,SBLOCK,XS(B)::QAR2(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(B)::QAR1(C)
      • P(b);OGATEB,SBLOCK,XS(B)::QAR2(C)
      • P(b);SBLOCK::QAR1(C)
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