MESON Chess Problem Database

Problem Display
PID: 141689 (2B2Q2/pp6/RN6/pk2N3/8/8/8/7K w - - 0 1)

Grinchenko, Dmitry

Probleemblad, 1977

2B2Q2/pp6/RN6/pk2N3/8/8/8/7K

#2

6 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4?
      • 1...Kxa6
        • 2.Qf1#
      • 1...bxa6
        • 2.Bd7#
      • 1...b6
        • 2.Sc3#
      • 1...Kxa4!
    • 1.Rxa5+?
      • 1...Kxb6
        • 2.Qc5#
        • 2.Qd8#
      • 1...Kxa5!
  • Keys
    • 1.Sd5!
      • 1...Ka4
        • 2.Qb4#
      • 1...Kxa6
        • 2.Qf1#
      • 1...bxa6
        • 2.Bd7#
      • 1...a4
        • 2.Sc7#
      • 1...b6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(b);P_SPINP(d),S_FLIGHT,XR(C)::QAB(F)
        • P(d);SBLOCK,XR(C)::B(E)
        • P(d);::S(D)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XS(D)
    • Try
      • R(C);CHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
  • Actual
    • S(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(F)
      • K(b);P_SPINP(d),S_FLIGHT,XR(C)::QAB(F)
      • P(d);SBLOCK,XR(C)::B(E)
      • P(a);::S(D)
      • P(d);::S(D)
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