MESON Chess Problem Database

Problem Display
PID: 18183 (5K2/3p1B2/3p4/8/3pkpnN/Q3P1rN/2P1br2/3n2B1 w - - 0 1)

Castellari, Umberto

To Mat, 1953

5K2/3p1B2/3p4/8/3pkpnN/Q3P1rN/2P1br2/3n2B1

#2

8 + 10

3174 The Two-move Chess Problem Tradition and Development 1966
14744 Nuova Antologia dei Problemisti Italiani 1992
136 Problem Observer 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qf5#
        • 2.Qxd4#
      • 1...Bxd3!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Qxd4#
      • 1...Kxe3
        • 2.Qxf4#
      • 1...Rxe3
        • 2.Sg5#
        • 2.Bd5#
        • 2.Bg6#
        • 2.Qd5#
      • 1...Sdxe3
        • 2.Sg5#
      • 1...Sgxe3
        • 2.Qe7#
      • 1...dxe3
        • 2.Sg5#
        • 2.Bg6#
        • 2.Qd5#
      • 1...fxe3
        • 2.Sg5#
        • 2.Qd5#
      • 1...d3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • B(b);XQ(C)
  • Actual
    • Q(C);XP(i)
    • Threat
      • QAR1(C),XP(e)
    • Vars
      • K(f);P-FLIGHT,P_SPINR(c),XP(D)::QAB1(C),XP(g)
      • S(a);SBLOCK,XP(D)::S(E)
      • S(h);N_GUARD,SBLOCK,XP(D)::QAR(C)
      • P(e);::QAR1(C)
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