MESON Chess Problem Database

Problem Display
PID: 66746 (4NB2/2n1pp2/2P2r2/2kP4/P2pR3/KQ4b1/8/7B w - - 0 1)

Dlugach, G

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

diagrammes, 1978

4NB2/2n1pp2/2P2r2/2kP4/P2pR3/KQ4b1/8/7B

#2

9 + 7

3195 idee & form 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Bxe7#
    • 1...Sb5+
      • 2.Qxb5#
    • 1...Sxd5
      • 2.Qb5#
    • 1...Sa6
      • 2.Qb5#
    • 1...Se6
      • 2.Qb5#
    • 1...Sa8
      • 2.Qb5#
    • 1...d3
      • 2.Rc4#
  • Tries
    • 1.Rf4?
      • threat
        • 2.Qb4#
      • 1...Sb5+
        • 2.Qxb5#
      • 1...Sxd5
        • 2.Qb5#
      • 1...Sa6
        • 2.Qb5#
      • 1...Be1!
    • 1.Re5?
      • threat
        • 2.Qb4#
      • 1...Sb5+
        • 2.Qxb5#
      • 1...Sxd5
        • 2.Qb5#
      • 1...Rf3
        • 2.Bxe7#
      • 1...Sa6
        • 2.Qb5#
      • 1...Be1!
    • 1.Re6?
      • threat
        • 2.Qb4#
      • 1...Sb5+
        • 2.Qxb5#
      • 1...Sxd5
        • 2.Qb5#
      • 1...Be1
        • 2.Bxe7#
      • 1...Sa6
        • 2.Qb5#
      • 1...Rf3!
  • Keys
    • 1.Rxe7!
      • threat
        • 2.Qb4#
      • 1...Sb5+
        • 2.Qxb5#
      • 1...Sxd5
        • 2.Qb5#
      • 1...Be1
        • 2.Re6#
      • 1...Rf3
        • 2.Re5#
      • 1...Sa6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD,S_CUTB(a)::B(I),XP(f)
    • S(e);CHECK,N_GUARD::QAR1(C),XS(e)
    • S(e);N_GUARD,SBLOCK,XP(F)::QAR1(C)
    • S(e);N_GUARD::QAR1(C)
    • P(b);OGATE::R1(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(C)
      • Vars
        • S(e);CHECK,N_GUARD::QAR1(C),XS(e)
        • S(e);N_GUARD,XP(F)::QAR1(C)
        • S(e);N_GUARD::QAR1(C)
      • Refutation
        • B(a);
    • Try
      • R(E);
      • Threat
        • QAB1(C)
      • Vars
        • S(e);CHECK,N_GUARD::QAR1(C),XS(e)
        • S(e);N_GUARD,P_SPINS(e),XP(F)::QAR1(C)
        • R(d);N_GUARD,P_PINQ(C)::B(I),XP(f)
        • S(e);N_GUARD::QAR1(C)
      • Refutation
        • B(a);
    • Try
      • R(E);
      • Threat
        • QAB1(C)
      • Vars
        • S(e);CHECK,N_GUARD::QAR1(C),XS(e)
        • S(e);N_GUARD,XP(F)::QAR1(C)
        • B(a);N_GUARD::B(I),XP(f)
        • S(e);N_GUARD::QAR1(C)
      • Refutation
        • R(d);P_PINQ(C)
  • Actual
    • R(E);XP(f)
    • Threat
      • QAB1(C)
    • Vars
      • S(e);CHECK,N_GUARD::QAR1(C),XS(e)
      • S(e);N_GUARD,XP(F)::QAR1(C)
      • B(a);N_GUARD::B(I)+R(E)
      • R(d);N_GUARD,P_PINQ(C)::B(I)+R(E)
      • S(e);N_GUARD::QAR1(C)
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