MESON Chess Problem Database

Problem Display
PID: 7641 (8/1N6/2Qp4/6r1/3kB3/6p1/3K4/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1992

8/1N6/2Qp4/6r1/3kB3/6p1/3K4/8

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Re5
      • 2.Qa4#
    • 1...Rg6
      • 2.Qd5#
    • 1...Rg7
      • 2.Qd5#
    • 1...Rg8
      • 2.Qd5#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Qe4#
        • 2.Qc3#
      • 1...Rc5
        • 2.Qe4#
      • 1...Rg4
        • 2.Qd5#
        • 2.Qc3#
      • 1...Rd5
        • 2.Qxd5#
        • 2.Qc3#
      • 1...Re5
        • 2.Qa4#
        • 2.Qc3#
      • 1...d5
        • 2.Qc3#
      • 1...Ke5!
    • 1.Bf3?
      • threat
        • 2.Qe4#
        • 2.Qc3#
      • 1...Rc5
        • 2.Qe4#
      • 1...Rg4
        • 2.Qd5#
        • 2.Qc3#
      • 1...Rd5
        • 2.Qxd5#
        • 2.Qc3#
      • 1...Re5
        • 2.Qa4#
        • 2.Qc3#
      • 1...d5
        • 2.Qc3#
      • 1...Ke5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qxd6#
      • 1...Rg4
        • 2.Qxd6#
      • 1...Rd5
        • 2.Qc3#
      • 1...Re5
        • 2.Qc4#
      • 1...d5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::QAR1(C)
    • R(c);N_GUARD::QAR1(C),XR(c)
    • R(c);SBLOCK::QAR(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAR1(C)
        • P(d);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAR1(C)
        • P(d);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C),XP(d)
      • R(c);N_GUARD::QAR2(C),XP(d)
      • R(c);SBLOCK::QAB1(C)
      • R(c);SBLOCK::QAR1(C)
      • P(d);SBLOCK::QAB1(C)
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