MESON Chess Problem Database

Problem Display
PID: 232894 (1K1kq3/4N3/1pP5/8/8/8/4Q3/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Kudesnik, 2005

1K1kq3/4N3/1pP5/8/8/8/4Q3/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd1+?
      • 1...Qd7
        • 2.Qxd7#
      • 1...Kxe7+!
    • 1.Qd3+?
      • 1...Qd7
        • 2.Qxd7#
      • 1...Kxe7+!
    • 1.Qd2+?
      • 1...Qd7
        • 2.Qxd7#
      • 1...Kxe7+!
  • Keys
    • 1.Qe6!
      • threat
        • 2.c7#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Qxe7
        • 2.Qc8#
      • 1...Qh5
        • 2.Qd7#
      • 1...Qg6
        • 2.Qd7#
      • 1...Qd7
        • 2.Qxd7#
      • 1...Qf7
        • 2.Qd7#
      • 1...Qf8
        • 2.Qd7#
      • 1...Qg8
        • 2.Qd7#
      • 1...Qh8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(C)
  • Actual
    • Q(A);
    • Threat
      • P(B)
    • Vars
      • Q(c);XP(B)::S(C),XQ(c)
      • Q(c);SBLOCK,XS(C)::QAR1(A)
      • Q(c);N_GUARD::QAR1(A)
      • Q(c);N_GUARD::QAR1(A),XQ(c)
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