MESON Chess Problem Database

Problem Display
PID: 77643 (8/8/8/3Q4/1N1R4/K7/8/kbn5 w - - 0 1)

Lipton, Michael

The Problemist, 1953

8/8/8/3Q4/1N1R4/K7/8/kbn5

#2

4 + 3

14867 BCPS Library 2012

SOLUTION

  • SOUND
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Ba2
        • 2.Qxa2#
      • 1...Bc2
        • 2.Qa2#
      • 1...Bd3
        • 2.Qa2#
      • 1...Be4
        • 2.Qa2#
      • 1...Bf5
        • 2.Qa2#
      • 1...Bg6
        • 2.Qa2#
      • 1...Bh7
        • 2.Qa2#
      • 1...Sa2
        • 2.Sc2#
        • 2.Qxa2#
      • 1...Se2
        • 2.Sc2#
        • 2.Qa2#
      • 1...Sb3
        • 2.Sc2#
      • 1...Sd3
        • 2.Sc2#
        • 2.Qa2#

There are these versions: 146149

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • B(b);N_GUARD,P_SPINS(c)::QAR1(D),XB(b)
      • B(b);N_GUARD,P_SPINS(c)::QAR1(D)
      • S(c);P_SPINB(b)::S(B)
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