MESON Chess Problem Database

Problem Display
PID: 246095 (K1k5/8/2N1P3/B7/8/8/2R5/7q w - - 0 1)

Zinoviev, Nikolai

Problemist Pribuzhya, 1992

K1k5/8/2N1P3/B7/8/8/2R5/7q

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6+
      • 2.Rxc6#
    • 1...Qa1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qb1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qc1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qd1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qe1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qf1
      • 2.Sa7#
      • 2.Se7#
    • 1...Qg1
      • 2.Sd4#
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh2
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh3
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh4
      • 2.Sd4#
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh5
      • 2.Se5#
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh6
      • 2.Sb4#
      • 2.Sd4#
      • 2.Se5#
      • 2.Sa7#
      • 2.Se7#
      • 2.Sb8#
      • 2.Sd8#
    • 1...Qh7
      • 2.Sa7#
      • 2.Se7#
    • 1...Qh8
      • 2.Sd4#
      • 2.Se5#
      • 2.Sa7#
      • 2.Se7#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Rb8#
      • 1...Qb1
        • 2.Sa7#
        • 2.Se7#
      • 1...Qh2
        • 2.Sa7#
        • 2.Se7#
      • 1...Qxc6+!
  • Keys
    • 1.Ka7!
      • threat
        • 2.Se7#
      • 1...Qg1+
        • 2.Sd4#
      • 1...Qxc6
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::R(A),XQ(a)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Refutation
        • Q(a);CHECK,XS(C)
  • Actual
    • K(E);N_SPINS(C),P-FLIGHT
    • Threat
      • R(A)+S(C),DCHECK
    • Vars
      • Q(a);CHECK,N_GUARD::R(A)+S(C)
      • Q(a);OGATE,P_SPINQ(a),XS(C)::R(A),XQ(a)
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