MESON Chess Problem Database

Problem Display
PID: 45355 (5R2/3K4/3P4/4kpp1/3n1bR1/2Q1Np2/8/3r4 w - - 0 1)

Stevenson, Edward

Double Pin-Mate after a Black King Move, 1980

5R2/3K4/3P4/4kpp1/3n1bR1/2Q1Np2/8/3r4

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Rxf5#
      • 2.Qc5#
    • 1...Bxe3
      • 2.Qc5#
    • 1...Bg3
      • 2.Rxf5#
      • 2.Qc5#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qd5#
      • 1...Ke4
        • 2.Re8#
      • 1...Bxe3
        • 2.Qc5#
      • 1...Sc2
        • 2.Rxf5#
      • 1...Se2
        • 2.Rxf5#
      • 1...Sb3
        • 2.Rxf5#
      • 1...Sb5
        • 2.Rxf5#
      • 1...Sc6
        • 2.Rxf5#
      • 1...Se6
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(d);XS(B)::QAR2(A)
  • Actual
    • Q(A);N_PINS(c)
    • Threat
      • QAR1(A)
    • Vars
      • K(e);P-FLIGHT,P_SPINB(d),P_SPINS(c)::R(F)
      • B(d);XS(B)::QAR2(A)
      • S(c);N_GUARD,P_PINP(D)::R1(F),XP(f)
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