MESON Chess Problem Database

Problem Display
PID: 23557 (b1k5/P3K3/2p5/1N6/8/8/8/7Q w - - 0 1)

Stepochkin, Anatoly Viktorovich

Molodoi kommunar, 1985

b1k5/P3K3/2p5/1N6/8/8/8/7Q

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Qh3#
      • 2.Qh8#
    • 1...c5
      • 2.Qxa8#
  • Tries
    • 1.Qh2?
      • threat
        • 2.Qc7#
        • 2.Qb8#
      • 1...cxb5
        • 2.Qb8#
      • 1...Kb7!
  • Keys
    • 1.Kd6!
      • 1...Kb7
        • 2.Qxc6#
      • 1...Kd8
        • 2.Qh8#
      • 1...cxb5
        • 2.Qxa8#
      • 1...Bb7
        • 2.Qh8#
      • 1...c5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAR2(A),XB(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(B)::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAB1(A),XP(a)
      • K(c);P-FLIGHT::QAR(A)
      • P(a);OGATE,XS(B)::QAR2(A),XB(b)
      • B(b);SBLOCK::QAR(A)
      • P(a);OGATE::QAR2(A),XB(b)
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