MESON Chess Problem Database

Problem Display
PID: 216441 (8/8/5K2/1k1B4/1B6/P4Q2/8/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

8/8/5K2/1k1B4/1B6/P4Q2/8/8

#2

5 + 1

15148 Sadier Collection 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Bc6#
  • Tries
    • 1.Bb7?
      • threat
        • 2.Qc6#
      • 1...Ka4
        • 2.Bc6#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kb6!
    • 1.Qe2+?
      • 1...Ka4
        • 2.Qa6#
        • 2.Qe8#
      • 1...Kb6!
    • 1.Qf1+?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kb6!
    • 1.Qd3+?
      • 1...Ka4
        • 2.Bb3#
        • 2.Bc6#
        • 2.Qa6#
      • 1...Kb6!
    • 1.Qe3?
      • 1...Ka4
        • 2.Bc6#
        • 2.Qe8#
      • 1...Ka6!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Qc6#
      • 1...Ka4
        • 2.Bc6#
      • 1...Kc4
        • 2.Qd5#
      • 1...Ka6
        • 2.Qb7#
      • 1...Kb6
        • 2.Qb7#

This anticipates 15317(1982)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(D)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAR1(B)
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