MESON Chess Problem Database

Problem Display
PID: 59836 (4N3/5n2/4p1B1/3Pk2K/7p/4p3/b1N1Q3/b4R2 w - - 0 1)

Nestorescu, Virgil

Magyar Sakkelet, 1960

4N3/5n2/4p1B1/3Pk2K/7p/4p3/b1N1Q3/b4R2

#2

7 + 7

4764 Probleme si studii alese 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb5#
    • 1...Bxd5
      • 2.Qh2#
    • 1...exd5
      • 2.Qxe3#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Qh2#
        • 2.Qxe3#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Bxd5
        • 2.Qh2#
      • 1...exd5
        • 2.Qxe3#
      • 1...Sg5
        • 2.Qh2#
      • 1...Sd6
        • 2.Qh2#
      • 1...Bd4!
    • 1.Rf5+?
      • 1...Ke4
        • 2.Qxe3#
      • 1...exf5!
    • 1.Qg4?
      • threat
        • 2.Qxe6#
        • 2.Qe4#
      • 1...Bxd5
        • 2.Qf4#
      • 1...exd5
        • 2.Qf5#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sd6
        • 2.Qxe6#
      • 1...Sd8
        • 2.Qe4#
        • 2.Qg5#
      • 1...Kxd5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Bxd5
        • 2.Qxa1#
      • 1...exd5
        • 2.Qf6#
      • 1...Sg5
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(c),OGATEB,P-FLIGHT,XP(D)::QAR2(C)
    • B(b);SBLOCK,XP(D)::QAB(C)
    • P(f);SBLOCK,XP(D)::QAR2(C),XP(c)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);N_SPINP(c),S_FLIGHT::QAB1(C),XP(c)
        • B(b);XP(D)::QAB(C)
        • P(f);XP(D)::QAR2(C),XP(c)
        • S(g);::QAB(C)
      • Refutation
        • B(a);
    • Try
      • R(A);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(C),XP(c)
      • Refutation
        • P(f);XR(A)
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);SBLOCK,XP(D)::QAB1(C)
        • P(f);N_GUARD,SBLOCK,XP(D)::QAR1(C)
        • S(g);N_GUARD::QAR2(C),XS(g)
        • S(g);::QAR1(C),XP(f)
      • Refutation
        • K(e);P-FLIGHT,XP(D)
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • QAR1(C),XP(f)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XP(D)::QAR2(C)
      • B(b);OGATE,SBLOCK,XP(D)::QAB(C),XB(a)
      • P(f);OGATE,SBLOCK,XP(D)::QAB1(C)
      • S(g);N_GUARD::QAB1(C)
      • S(g);N_GUARD::QAB1(C),XS(g)
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