MESON Chess Problem Database

Problem Display
PID: 71066 (1K6/1R1p4/2k5/4Q3/8/8/6p1/7b w - - 0 1)

Kalandadze, Velimir

4th Prize, Ellerman MT, 1975

1K6/1R1p4/2k5/4Q3/8/8/6p1/7b

#2

3 + 4

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qc7#
    • 1...d6
      • 2.Qb5#
  • Tries
    • 1.Rxd7?
      • threat
        • 2.Rd6#
      • 1...Kb6
        • 2.Rd6#
      • 1...Kxd7!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Rb6#
      • 1...d5
        • 2.Qb6#
      • 1...d6
        • 2.Qc4#

Anticipated by 18231(1954), 18862(1958)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR1(A)
    • P(d);SBLOCK::QAB1(A)
  • Tries
    • Try
      • R(B);XP(d)
      • Threat
        • R1(B)
      • Vars
        • K(c);P-FLIGHT::R(B)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
  • Actual
    • Q(A);
    • Threat
      • R1(B)
    • Vars
      • P(d);SBLOCK::QAR1(A)
      • P(d);SBLOCK::QAR2(A)
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