MESON Chess Problem Database

Problem Display
PID: 18516 (QBR5/3r4/8/n1P2P1p/1N1k3r/4p3/1P1NR3/1Kn5 w - - 0 1)

Grinblat, Arieh

1st Prize, Israel Ring Ty., 1956

QBR5/3r4/8/n1P2P1p/1N1k3r/4p3/1P1NR3/1Kn5

#2

10 + 7

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qe4#
    • 1...Rh2
      • 2.Qe4#
    • 1...Rh3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Ra7
      • 2.Qd5#
    • 1...Rc7
      • 2.Qd5#
    • 1...Re7
      • 2.Qd5#
    • 1...Rf7
      • 2.Qd5#
    • 1...Rg7
      • 2.Qd5#
    • 1...Rh7
      • 2.Qd5#
    • 1...Sd3
      • 2.Sc2#
    • 1...Sc4
      • 2.Sf3#
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qf6#
      • 1...exd2
        • 2.Be5#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rc7
        • 2.Qd6#
      • 1...Sc6
        • 2.Qc4#
      • 1...Re4
        • 2.Sf3#
      • 1...Rd5
        • 2.Sc2#
      • 1...Re7
        • 2.Qd6#
      • 1...Rf7
        • 2.Qd6#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD::QAR1(H)
    • R(d);N_GUARD::QAR1(H),XR(d)
    • R(g);N_GUARD::QAR1(H),XR(g)
    • R(g);N_GUARD::QAR1(H)
    • S(a);SBLOCK::S(E)
    • S(e);SBLOCK::S(C)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • P(b);XS(C)::B(I)
      • R(g);N_GUARD::QAR2(H),XR(g)
      • R(g);N_GUARD::QAR2(H)
      • S(e);N_GUARD::QAR1(H)
      • R(d);SBLOCK::S(C)
      • R(g);SBLOCK::S(E)
      • S(a);N_GUARD::QAR1(H),XS(a)
      • S(e);N_GUARD::QAR1(H),XS(e)
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