MESON Chess Problem Database

Problem Display
PID: 265357 (4r3/5N2/6pQ/3pB3/r3k1Kn/1N1p1pb1/3p1q2/8 w - - 0 1)

Castellari, Umberto

Comm., La Scacchiera, 1952

4r3/5N2/6pQ/3pB3/r3k1Kn/1N1p1pb1/3p1q2/8

#2

5 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sc5#
    • 1...Qg1
      • 2.Sxd2#
    • 1...Qd4
      • 2.Sxd2#
    • 1...Qc5
      • 2.Sxd2#
      • 2.Sxc5#
    • 1...Qb6
      • 2.Sxd2#
    • 1...Qa7
      • 2.Sxd2#
    • 1...Qf1
      • 2.Sxd2#
      • 2.Sc5#
    • 1...Qe2
      • 2.Sc5#
    • 1...Qg2
      • 2.Sc5#
    • 1...Qh2
      • 2.Sc5#
    • 1...Rd4
      • 2.Sc5#
    • 1...Rxe5
      • 2.Sd6#
    • 1...Bf4
      • 2.Qxf4#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Sg5#
        • 2.Sd6#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Qc5
        • 2.Sg5#
      • 1...Qb6
        • 2.Sg5#
      • 1...Ra6
        • 2.Sg5#
      • 1...Re5
        • 2.Sd6#
      • 1...Re6
        • 2.Sg5#
      • 1...Rd8
        • 2.Sg5#
      • 1...Sf5
        • 2.Sg5#
      • 1...g5
        • 2.Sxg5#
        • 2.Sd6#
      • 1...d4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Sg5#
      • 1...Qxd4
        • 2.Sxd2#
      • 1...Rxd4
        • 2.Sc5#
      • 1...Qe3
        • 2.Qxe3#
      • 1...Re5
        • 2.Sd6#
      • 1...Bf4
        • 2.Qxf4#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::S(A)
    • Q(b);N_GUARD::S(A),XP(a)
    • R(f);S_CUTQ(b)::S(A)
    • R(k);SBLOCK,XB(C)::S(E)
    • B(e);N_GUARD::QAR1(D),XB(e)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);OGATE,XB(C)::QAR1(D),XB(e)
        • Q(b);::S(E)
        • R(f);::S(E)
        • R(k);::S(E)
        • S(h);::S(E)
      • Refutation
        • P(i);
  • Actual
    • B(C);
    • Threat
      • S(E)
    • Vars
      • Q(b);N_GUARD,SBLOCK,XB(C)::S(A),XP(a)
      • R(f);SBLOCK,XB(C)::S(A)
      • Q(b);N_GUARD::QAR1(D),XQ(b)
      • R(k);S_CUTB(e)::S(E)
      • B(e);N_GUARD::QAR1(D),XB(e)
      • P(j);::S(E),XP(j)
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