MESON Chess Problem Database

Problem Display
PID: 232986 (8/8/8/3R1r2/8/3NQ3/8/K2k3q w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2002

8/8/8/3R1r2/8/3NQ3/8/K2k3q

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Se1#
      • 2.Sb4#
  • Tries
    • 1.Kb1?
      • threat
        • 2.Sb2#
        • 2.Sf2#
      • 1...Qxd5
        • 2.Sb2#
        • 2.Qe1#
      • 1...Rf2
        • 2.Sb2#
        • 2.Sxf2#
      • 1...Qe4!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Sf2#
      • 1...Qh8+
        • 2.Se5#
      • 1...Rf2+
        • 2.Sxf2#
      • 1...Qxd5
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • Q(b);P_PINS(B)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • R(D)+S(B),DCHECK
    • Vars
      • Q(b);CHECK,N_GUARD::R(D)+S(B)
      • R(c);CHECK::R(D)+S(B),DCHECK,XR(c)
      • Q(b);N_GUARD,XR(D)::QAR1(C)
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