MESON Chess Problem Database

Problem Display
PID: 95049 (8/3p4/6Q1/4p3/1K1k4/4N3/5P2/8 w - - 0 1)

Tura, Waldemar

Tuvinskaya Pravda, 1958

8/3p4/6Q1/4p3/1K1k4/4N3/5P2/8

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qd6#
    • 1...d5
      • 2.Sc2#
  • Tries
    • 1.Qf5?
      • 1...e4
        • 2.Qd5#
      • 1...d5
        • 2.Sc2#
      • 1...d6!
    • 1.f3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...d5
        • 2.Sc2#
      • 1...Kxe3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc4#
      • 1...e4
        • 2.Qc3#
      • 1...d5
        • 2.Sf5#

Anticipated by 18243(1954)

This anticipates 272311(1980)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR2(D)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • Q(D);
      • Vars
        • P(b);OGATE::QAR1(D)
        • P(c);SBLOCK::S(B)
      • Refutation
        • P(c);
    • Try
      • P(A);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);::QAR1(D),XP(b)
        • P(c);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • P(b);SBLOCK::QAB1(D)
      • P(c);SBLOCK::S(B)
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