MESON Chess Problem Database

Problem Display
PID: 158365 (3N4/B1n5/3p4/K2kP3/8/4Q3/3Nn2b/7b w - - 0 1)

Nestorescu, Virgil

Stadion, 1951

3N4/B1n5/3p4/K2kP3/8/4Q3/3Nn2b/7b

#2

6 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Bxe5
      • 2.Qb3#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sc3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
    • 1...dxe5
      • 2.Qc5#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Qxd6#
      • 1...Bxe5
        • 2.Qb3#
        • 2.Qc6#
        • 2.Qb7#
      • 1...dxe5
        • 2.Qc5#
        • 2.Qc6#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Se8
        • 2.Qb5#
      • 1...Kxe5!
    • 1.Qd3+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kxe5!
    • 1.Qf3+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...Bxf3!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Bxe5
        • 2.Qxh1#
      • 1...dxe5
        • 2.Qc6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • B(a);N_GUARD::QAB1(B),XB(a)
    • B(c);SBLOCK,XP(D)::QAB(B)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • P(e);N_GUARD,SBLOCK,XP(D)::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(e)
      • Vars
        • S(f);N_GUARD::QAR2(B),XS(f)
        • S(f);N_GUARD::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(B),XS(b)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(D)::S(A)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(e)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XP(D)::QAR2(B)
      • B(c);OGATE,SBLOCK,XP(D)::QAB(B),XB(a)
      • P(e);OGATE,SBLOCK,XP(D)::QAB1(B)
      • S(f);N_GUARD::QAB1(B)
      • S(f);N_GUARD::QAB1(B),XS(f)
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