MESON Chess Problem Database

Problem Display
PID: 240036 (8/8/2K4b/4p3/3k4/5Q2/2R5/8 w - - 0 1)

Mosiashvili, Givi

Problemist Pribuzhya, 1991

8/8/2K4b/4p3/3k4/5Q2/2R5/8

#2

3 + 3

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Qd5#
    • 1...e4
      • 2.Qc3#
  • Tries
    • 1.Re2?
      • threat
        • 2.Re4#
      • 1...Kc4
        • 2.Re4#
      • 1...e4
        • 2.Rxe4#
      • 1...Be3!
    • 1.Qb3?
      • threat
        • 2.Rc4#
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qd3#
      • 1...Be3
        • 2.Qxe3#
      • 1...e4
        • 2.Qf6#

This anticipates 259389(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR1(B)
    • P(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
        • P(b);::R1(A),XP(b)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • R1(A)
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(A);
    • Threat
      • QAR1(B)
    • Vars
      • B(c);N_GUARD::QAB1(B),XB(c)
      • P(b);OGATEB,SBLOCK::QAB(B)
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