MESON Chess Problem Database

Problem Display
PID: 11931 (7R/B2nK3/rp6/4k1p1/3p1ppN/2n5/2N1P1B1/4Q3 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1973

7R/B2nK3/rp6/4k1p1/3p1ppN/2n5/2N1P1B1/4Q3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Qxe2#
    • 1...Sc5
      • 2.Bb8#
    • 1...Sf6
      • 2.Bb8#
    • 1...Sb8
      • 2.Bxb8#
    • 1...Sf8
      • 2.Bb8#
    • 1...d3
      • 2.Qxc3#
    • 1...gxh4
      • 2.Rh5#
    • 1...b5
      • 2.Bxd4#
  • Tries
    • 1.Qxc3?
      • threat
        • 2.Qxd4#
        • 2.Qc7#
      • 1...Rxa7
        • 2.Qxd4#
      • 1...gxh4
        • 2.Rh5#
      • 1...f3
        • 2.Qxd4#
      • 1...Ra4
        • 2.Qc7#
      • 1...Sc5
        • 2.Bb8#
        • 2.Qxd4#
      • 1...b5
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...dxc3!
  • Keys
    • 1.e4!
      • threat
        • 2.Sg6#
      • 1...Sd5+
        • 2.exd5#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...gxh4
        • 2.Rh5#
      • 1...dxe4 ep
        • 2.Qxc3#
      • 1...fxe4 ep
        • 2.Qg3#
      • 1...Sf8
        • 2.Bb8#
      • 1...b5
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(a);OGATE,P_SPINS(a),XP(C)::QAR(A),XS(a)
    • S(i);N_GUARD::B(F)
    • S(i);N_GUARD::B(F),XS(i)
    • P(b);OGATEB::QAB(A),XS(a)
    • P(f);OGATEB,XS(E)::R(H)
    • P(h);OGATE::B(F),XP(b)
  • Tries
    • Try
      • Q(A);P_PINP(b),XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XB(F)::QAB1(A),XP(b)
        • P(f);OGATEB,XS(E)::R(H)
        • P(c);::QAB1(A),XP(b)
        • R(g);::QAB(A)
      • Refutation
        • P(b);N_SPINP(b),XQ(A)
  • Actual
    • P(C);
    • Threat
      • S(E)
    • Vars
      • S(a);CHECK,OGATE::QAR(A)+P(C),XS(a)
      • S(a);OGATE,P_SPINS(a),XP(C)::QAR1(A),XS(a)
      • P(f);OGATEB,XS(E)::R(H)
      • P(b);EP,OGATEB,P_SPINP(b),XP(C)::QAB(A),XS(a)
      • P(c);EP,OGATEB,P_SPINP(c),XP(C)::QAB(A)
      • S(i);N_GUARD::B(F)
      • P(h);OGATE::B(F),XP(b)
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