MESON Chess Problem Database

Problem Display
PID: 232462 (r3k2r/p5n1/K3pPn1/4N3/8/8/8/1Q6 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Freie Presse, 2007

r3k2r/p5n1/K3pPn1/4N3/8/8/8/1Q6

#2

4 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Qxb8#
  • Tries
    • 1.Qxg6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kd8!
    • 1.Qb5+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qxa8#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qf7#
      • 1...Sxe5
        • 2.Qe7#
      • 1...Rb8
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Rd8
        • 2.Qf7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAR(A),XR(e)
  • Tries
    • Try
      • Q(A);CHECK,XS(b)
      • Vars
        • K(f);P-FLIGHT::QAR1(A)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR1(A)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR(A),XR(e)
    • Vars
      • K(f);P-FLIGHT::QAR1(A)
      • S(b);N_GUARD,XS(B)::QAR1(A)
      • R(e);N_GUARD::QAR(A),XR(e)
      • R(e);N_GUARD::QAR2(A),XR(e)
      • R(e);SBLOCK::QAB1(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
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