MESON Chess Problem Database

Problem Display
PID: 269255 (5B2/KR3B2/N7/pR3q2/k4p2/8/PrN5/2nQ4 w - - 0 1)

Cristoffanini, Guido

4th HM., Swiat Szachowy, 1932

5B2/KR3B2/N7/pR3q2/k4p2/8/PrN5/2nQ4

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sc5#
    • 1...Qh3
      • 2.Sc5#
    • 1...Qe4
      • 2.Sc5#
    • 1...Qg4
      • 2.Sc5#
    • 1...Qe6
      • 2.Sc5#
    • 1...Qg6
      • 2.Sc5#
    • 1...Qd7
      • 2.Sc5#
    • 1...Qh7
      • 2.Sc5#
    • 1...Qc5+
      • 2.Sxc5#
    • 1...Qf6
      • 2.Sc5#
    • 1...Qxf7
      • 2.Sc5#
    • 1...Rxa2
      • 2.Qd4#
  • Keys
    • 1.Be8!
      • threat
        • 2.Rb4#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qxc2
        • 2.Rxb2#
      • 1...Qxb5
        • 2.Sc5#
      • 1...Rxc2
        • 2.Rxf5#
      • 1...Rxb5
        • 2.Qd4#
      • 1...Qd7
        • 2.Sc5#
      • 1...Rb4
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(f);N_GUARD::S(E)
    • Q(f);N_GUARD,SBLOCK::S(E)
    • Q(f);N_GUARD,P_PINR(G)::S(E)
    • Q(f);CHECK,N_GUARD::S(E),XQ(f)
    • Q(f);N_GUARD,P_PINR(G),XB(H)::S(E)
    • R(b);N_GUARD,XP(B)::QAR(A)
  • Actual
    • B(H);
    • Threat
      • B(H)+R(D),DCHECK
    • Vars
      • Q(f);CHECK,N_GUARD::S(E),XQ(f)
      • Q(f);N_GUARD,P_SPINQ(f),XS(C)::B(H)+R(D),XR(b)
      • Q(f);N_GUARD,P_SPINQ(f),XR(D)::S(E)
      • R(b);N_GUARD,P_SPINR(b),XS(C)::B(H)+R(D),XQ(f)
      • R(b);N_GUARD,P_SPINR(b),XR(D)::QAR(A)
      • Q(f);N_GUARD,P_PINR(G)::S(E)
      • R(b);::B(H)+R(D),DCHECK,XR(b)
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