MESON Chess Problem Database

Problem Display
PID: 107700 (8/2Qn4/8/8/3kBp2/8/3N1K2/8 w - - 0 1)

Bata, Lorinc

Sahovski Vestnik, 1949

8/2Qn4/8/8/3kBp2/8/3N1K2/8

#2

4 + 3

6490 yacpdb 2009
3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qg7#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Sb3#
      • 1...Sc5
        • 2.Qg7#
      • 1...Se5+!
    • 1.Qc2?
      • threat
        • 2.Sf3#
      • 1...Se5
        • 2.Sb3#
      • 1...f3
        • 2.Sxf3#
      • 1...Ke5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sf3#
      • 1...Ke5
        • 2.Sf3#
      • 1...Sc5
        • 2.Qf6#
      • 1...Se5
        • 2.Sb3#
      • 1...f3
        • 2.Sxf3#

This anticipates 267378(1957)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,SBLOCK::QAB(D)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • S(A)
      • Vars
        • S(c);OGATE,SBLOCK::QAB(D)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(D);
      • Threat
        • S(A)
      • Vars
        • S(c);SBLOCK::S(A)
        • P(b);::S(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • S(A)
    • Vars
      • K(a);S_FLIGHT::S(A)
      • S(c);N_GUARD,SBLOCK::QAB(D)
      • S(c);SBLOCK::S(A)
      • P(b);::S(A),XP(b)
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