MESON Chess Problem Database

Problem Display
PID: 263694 (8/1KR5/3k4/1p6/4Qb2/8/8/3r4 w - - 0 1)

Vlasenko, Nikolai Fillipovich

Zadachi i Etyudi, 2009

8/1KR5/3k4/1p6/4Qb2/8/8/3r4

#2

3 + 4

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qe7#
    • 1...Be5
      • 2.Qc6#
  • Tries
    • 1.Kc8?
      • threat
        • 2.Rc6#
      • 1...Be5
        • 2.Qc6#
      • 1...Rd5
        • 2.Qe7#
      • 1...Rc1!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Rd7#
      • 1...Be5
        • 2.Qd7#
      • 1...Rd5
        • 2.Qf6#

Anticipated by 18497(1956)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::QAB1(A)
    • B(b);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(C)
      • Vars
        • B(b);SBLOCK::QAR1(A)
        • R(a);SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINR(C)
  • Actual
    • Q(A);
    • Threat
      • R1(C)
    • Vars
      • B(b);SBLOCK::QAR1(A)
      • R(a);SBLOCK::QAR2(A)
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