MESON Chess Problem Database

Problem Display
PID: 246618 (8/2n5/8/1p6/k6B/8/1Q6/4KB2 w - - 0 1)

Chistyakov, Nikolay

Magadanskaya Pravda, 1995

8/2n5/8/1p6/k6B/8/1Q6/4KB2

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qa2#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qb4#
      • 1...Sd5
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qxb5#
      • 1...Sa6
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qxb5#
      • 1...b4
        • 2.Qa2#
        • 2.Qxb4#
      • 1...Ka5!
  • Keys
    • 1.Bd8!
      • 1...Ka5
        • 2.Qxb5#
      • 1...Sd5
        • 2.Bxb5#
      • 1...Sa6
        • 2.Bxb5#
      • 1...Se6
        • 2.Bxb5#
      • 1...Sa8
        • 2.Bxb5#
      • 1...Se8
        • 2.Bxb5#
      • 1...b4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR2(C)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(c)::QAR1(C),XP(b)
      • S(c);N_GUARD::B(B),XP(b)
      • P(b);SBLOCK::QAR2(C)
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