MESON Chess Problem Database

Problem Display
PID: 215834 (8/8/1b1Q4/1p6/k7/8/2K5/2N5 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

8/8/1b1Q4/1p6/k7/8/2K5/2N5

#2

3 + 3

15148 Sadier Collection 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qa3#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qa3#
      • 1...Bc5
        • 2.Qa6#
      • 1...b4
        • 2.Qxb4#
      • 1...Ba5!
    • 1.Qxb6?
      • 1...Ka3
        • 2.Qa5#
      • 1...b4
        • 2.Qa6#
      • 1...Kb4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qa3#
      • 1...Bc5
        • 2.Qa6#
      • 1...b4
        • 2.Qxb4#
      • 1...Ba5
        • 2.Sb2#

This anticipates 46477(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • B(c);OGATE::QAR2(C)
        • P(b);::QAR1(C),XP(b)
      • Refutation
        • B(c);
    • Try
      • Q(C);XB(c)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • S(A);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • B(c);OGATE::QAR2(C)
      • P(b);::QAR1(C),XP(b)
      • B(c);SBLOCK::S(A)
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