MESON Chess Problem Database

Problem Display
PID: 276108 (8/8/3R1R2/K3k1r1/4P3/5Q2/b6b/8 w - - 0 1)

Preziosi, Bruno

To Mat, 1957

8/8/3R1R2/K3k1r1/4P3/5Q2/b6b/8

#2

5 + 4

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qf5#
    • 1...Rg2
      • 2.Qf5#
    • 1...Rg3
      • 2.Qf4#
      • 2.Qf5#
    • 1...Rg4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rg6
      • 2.Qf5#
    • 1...Rg7
      • 2.Qf5#
    • 1...Rg8
      • 2.Qf5#
    • 1...Bb1
      • 2.Rd5#
      • 2.Rfe6#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Be6
      • 2.Rfxe6#
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qd4#
      • 1...Rf5
        • 2.Rxf5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bg1!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qd4#
      • 1...Rf5
        • 2.exf5#
      • 1...Bd5
        • 2.exd5#
      • 1...Bg1
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(d);N_GUARD::QAR1(A)
    • R(d);N_GUARD::QAR1(A),XR(d)
    • B(a);N_GUARD::R1(D),XB(a)
    • B(a);N_GUARD::R1(E),XB(a)
    • B(b);N_GUARD::QAB1(A)
    • B(b);N_GUARD::QAB1(A),XB(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(d);N_GUARD::R1(E),XR(d)
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • B(b);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(d);OGATE::QAR(A)+P(B),XR(d)
      • B(a);OGATE::QAR(A)+P(B),XB(a)
      • B(b);N_GUARD::QAB1(A)
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Developed and maintained by Brian Stephenson.
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