MESON Chess Problem Database

Problem Display
PID: 277855 (4N3/1p3p1K/8/1NpkPQ2/Pp2p3/3b4/3R1P1p/4R1bq w - - 0 1)

Cristoffanini, Guido

Western Morning News, 1927

(First published on Sat May 21 1927)

4N3/1p3p1K/8/1NpkPQ2/Pp2p3/3b4/3R1P1p/4R1bq

#2

9 + 10

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxf7#
  • Tries
    • 1.Sec7+?
      • 1...Kc4
        • 2.Qxf7#
      • 1...Kc6!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qxf7#
      • 1...Kxe5!
  • Keys
    • 1.Qxf7+!
      • 1...Kxe5
        • 2.f4#
      • 1...Kc6
        • 2.Qe6#

There are these versions: 278742

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(h);N_GUARD,N_SPINB(d),S_FLIGHT::QAB(G),XP(j)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(h);N_GUARD,N_SPINB(d),S_FLIGHT::QAB(G),XP(j)
      • Refutation
        • K(h);N_SPINB(d),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);N_GUARD,N_SPINB(d),S_FLIGHT::QAB(G),XP(j)
      • Refutation
        • K(h);N_SPINB(d),P-FLIGHT,P_SPINP(f),XP(F)
  • Actual
    • Q(G);CHECK,XP(j)
    • Vars
      • K(h);N_GUARD,N_SPINB(d),P-FLIGHT,P_SPINP(f),XP(F)::P(C)
      • K(h);N_GUARD,N_SPINB(d),S_FLIGHT::QAR2(G)
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