MESON Chess Problem Database

Problem Display
PID: 260943 (NKR5/6pb/R3p3/3kpn1Q/1p2n3/5P2/2N5/4b3 w - - 0 1)

Piatesi, Antonio

Neue Zurcher Zeitung, 1987

NKR5/6pb/R3p3/3kpn1Q/1p2n3/5P2/2N5/4b3

#2

7 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sed6
      • 2.Sb6#
    • 1...Sd4
      • 2.Se3#
    • 1...Sfd6
      • 2.Sb6#
  • Tries
    • 1.Rd6+?
      • 1...Sexd6
        • 2.Sb6#
      • 1...Sfxd6
        • 2.Sb6#
      • 1...Kxd6!
    • 1.Qf7?
      • threat
        • 2.Qxe6#
        • 2.Qb7#
      • 1...Bg8
        • 2.Qb7#
      • 1...Sg5
        • 2.Qb7#
      • 1...Sed6
        • 2.Sb6#
      • 1...Sd4
        • 2.Se3#
      • 1...Sfd6
        • 2.Sb6#
      • 1...Se7
        • 2.Qxe6#
      • 1...Sc5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxe4#
        • 2.fxe4#
      • 1...Sd2
        • 2.Sxb4#
      • 1...Sf2
        • 2.Qc4#
      • 1...Sc3
        • 2.Sxb4#
        • 2.Qc4#
      • 1...Seg3
        • 2.Qc4#
      • 1...Sc5
        • 2.Sc7#
      • 1...Sg5
        • 2.Qc4#
      • 1...Sed6
        • 2.Sb6#
      • 1...Sf6
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe6#
      • 1...Sfg3
        • 2.Qxe6#
      • 1...Sd4
        • 2.Se3#
      • 1...Sh4
        • 2.Qxe6#
      • 1...Sfd6
        • 2.Sb6#
      • 1...Sh6
        • 2.Qxe6#
      • 1...Se7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::S(E)
    • S(f);N_GUARD,P_SPINP(e),SBLOCK::S(A)
    • S(f);P_SPINP(e),SBLOCK::S(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(c);SBLOCK,XR(D)::S(E)
        • S(f);P_SPINP(e),SBLOCK,XR(D)::S(E)
      • Refutation
        • K(d);P-FLIGHT,XR(D)
    • Try
      • Q(C);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::QAB(C)
        • S(c);::QAB(C)
        • S(c);SBLOCK::S(E)
        • S(f);N_GUARD,SBLOCK::S(A)
        • S(f);SBLOCK::S(E)
        • S(f);::QAB1(C),XP(g)
      • Refutation
        • S(c);
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);S_CUTB(a)::S(A),XP(b)
      • S(c);OGATE::QAB1(C)
      • S(c);SBLOCK::S(E)
      • S(f);OGATE::QAB1(C),XP(g)
      • S(f);N_GUARD,SBLOCK::S(A)
      • S(f);SBLOCK::S(E)
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