MESON Chess Problem Database

Problem Display
PID: 49702 (8/R1bQ1B2/q7/kn6/8/2P5/4R3/4BK2 w - - 0 1)

Dobrescu, Emilian

3rd Prize, Bulletin Ouvrier des Echecs, 1955

8/R1bQ1B2/q7/kn6/8/2P5/4R3/4BK2

#2

7 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Ra2#
  • Tries
    • 1.Qxc7+?
      • 1...Ka4
        • 2.Rxa6#
      • 1...Sxc7!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Qxb5#
      • 1...Sa3+
        • 2.c4#
      • 1...Sxc3+
        • 2.Qb5#
      • 1...Sd4+
        • 2.c4#
      • 1...Sd6+
        • 2.c4#
      • 1...Sxa7+
        • 2.c4#
      • 1...Ka4
        • 2.Ra2#
      • 1...Kb6
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::R(C)
  • Tries
    • Try
      • Q(F);CHECK,XB(d)
      • Vars
        • K(a);P-FLIGHT::R(E),XQ(c)
      • Refutation
        • S(b);P_PINR(C),XQ(F)
  • Actual
    • R(C);
    • Threat
      • QAR1(F),XS(b)
    • Vars
      • S(b);CHECK,N_GUARD::B(A)+P(D)
      • S(b);CHECK,P_SPINS(b),XP(D)::QAR1(F)
      • S(b);CHECK,N_GUARD,N_SPINQ(c),XR(E)::B(A)+P(D)
      • K(a);P-FLIGHT,P_SPINS(b)::R(C)
      • K(a);N_SPINQ(c),P_SPINS(b),S_FLIGHT::QAB1(F),XB(d)
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