MESON Chess Problem Database

Problem Display
PID: 166873 (6B1/N7/8/3R4/nk6/8/8/2K2Q2 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Magadanskaya Pravda, 1982

6B1/N7/8/3R4/nk6/8/8/2K2Q2

#2

5 + 2

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6+?
      • 1...Kb3
        • 2.Rd3#
      • 1...Kc3
        • 2.Rd3#
        • 2.Qd3#
      • 1...Ka3!
    • 1.Rd4+?
      • 1...Ka3
        • 2.Sb5#
      • 1...Kc3
        • 2.Sb5#
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5!
    • 1.Rb5+?
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka3!
    • 1.Qc4+?
      • 1...Ka3
        • 2.Sb5#
      • 1...Kxc4!
    • 1.Qb5+?
      • 1...Kc3
        • 2.Rd3#
      • 1...Ka3!
  • Keys
    • 1.Ra5!
      • 1...Ka3
        • 2.Qf8#
      • 1...Kc3
        • 2.Qc4#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Sb2
        • 2.Qe1#
      • 1...Sc3
        • 2.Sc6#
      • 1...Sc5
        • 2.Qe1#
      • 1...Sb6
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::B(E)+R(C),DCHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::S(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT::QAB(B)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT,XR(C)::QAR1(B)
      • S(a);N_GUARD::QAB(B)
      • S(a);SBLOCK::S(D)
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