MESON Chess Problem Database

Problem Display
PID: 262020 (k4q2/N1Qp1r2/1Bp1P3/Kp3r2/1p2B3/8/R7/8 w - - 0 1)

Lipton, Michael

The Problemist, 1956

k4q2/N1Qp1r2/1Bp1P3/Kp3r2/1p2B3/8/R7/8

#2

7 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qc8#
    • 1...Qh6
      • 2.Qc8#
    • 1...Qe7
      • 2.Qc8#
    • 1...Qg7
      • 2.Qc8#
    • 1...Qc8
      • 2.Qxc8#
    • 1...dxe6
      • 2.Bxc6#
    • 1...d6
      • 2.Bxc6#
  • Tries
    • 1.Sc8?
      • threat
        • 2.Qa7#
      • 1...dxe6
        • 2.Bxc6#
      • 1...d6
        • 2.Kxb4#
        • 2.Bxc6#
      • 1...d5!
    • 1.Qxc6+?
      • 1...Kb8
        • 2.Qb7#
        • 2.Qa8#
        • 2.Qc7#
      • 1...dxc6!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Qa7#
      • 1...dxc6
        • 2.Bxc6#
      • 1...dxe6
        • 2.Se5#
      • 1...Qb8
        • 2.Qxb8#
      • 1...d5
        • 2.Kxb5#
      • 1...d6
        • 2.Kxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(h);N_GUARD::QAR2(G)
    • Q(h);N_GUARD,SBLOCK::QAR2(G)
    • Q(h);N_GUARD::QAR2(G),XQ(h)
    • P(e);N_GUARD,XP(E)::B(B),XP(d)
    • P(e);N_GUARD::B(B),XP(d)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(G)
      • Vars
        • P(e);N_GUARD,XP(E)::B(B),XP(d)
      • Refutation
        • P(e);N_SPINP(d)
    • Try
      • Q(G);CHECK,XP(d)
      • Refutation
        • P(e);P_SPINP(e),XQ(G)
  • Actual
    • S(F);XP(d)
    • Threat
      • QAR1(G)
    • Vars
      • P(e);OGATE,P_SPINP(e),XS(F)::B(B),XP(e)
      • P(e);N_GUARD,XP(E)::B(B)+S(F)
      • Q(h);N_GUARD::QAR1(G),XQ(h)
      • P(e);::R(A)+K(C),XP(b)
      • P(e);::R(A)+K(C),XP(a)
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