MESON Chess Problem Database

Problem Display
PID: 205517 (8/8/Q2P4/6k1/7N/8/7K/3B2B1 w - - 0 1)

Cristoffanini, Guido

Il Secolo, 1925

8/8/Q2P4/6k1/7N/8/7K/3B2B1

#2

6 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Be3+?
      • 1...Kxh4
        • 2.Qc4#
        • 2.Qa4#
      • 1...Kf6!
    • 1.Qf1?
      • 1...Kxh4
        • 2.Qf4#
        • 2.Qf6#
      • 1...Kh6!
    • 1.Qe2?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxh4
        • 2.Qg4#
        • 2.Qh5#
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6!
    • 1.Qd3?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qe3#
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
    • 1.Qb7?
      • 1...Kxh4
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Be3#
      • 1...Kf4!
    • 1.d7?
      • 1...Kxh4
        • 2.Qf6#
        • 2.Qh6#
        • 2.d8Q#
        • 2.d8B#
      • 1...Kf4!
  • Keys
    • 1.Qa7!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxh4
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Be3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAB(E)
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(F);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT,XS(D)::QAB(E)
      • K(a);S_FLIGHT::B(B)
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