MESON Chess Problem Database

Problem Display
PID: 226632 (2N5/1n6/1K6/3k4/8/3BQ3/6b1/8 w - - 0 1)

Zimmer, Eligiusz

Sachova skladba, 2004

2N5/1n6/1K6/3k4/8/3BQ3/6b1/8

#2

4 + 3

5454 Near Snap 2020
15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qe4#
    • 1...Bh3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sd6
      • 2.Se7#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Be6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bh3
        • 2.Qe4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd8
        • 2.Qc5#
      • 1...Kc4!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Sxc5!
    • 1.Qg5+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kd4!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Bc4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sa5
        • 2.Qd6#
      • 1...Bf1
        • 2.Qe4#
      • 1...Sd6
        • 2.Qxd6#

Anticipated by 39731(2000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • S(c);SBLOCK::S(D)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • B(a);N_GUARD::QAB1(B),XB(a)
        • B(a);N_GUARD::QAB1(B)
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • B(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • S(c);N_GUARD::QAR1(B)
      • B(a);N_GUARD::QAB1(B)
      • S(c);N_GUARD::QAR1(B),XS(c)
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