MESON Chess Problem Database

Problem Display
PID: 12285 (Q7/8/2p1p3/2bk4/3P4/3K4/8/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1977

Q7/8/2p1p3/2bk4/3P4/3K4/8/8

#2

3 + 4

3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd8#
    • 1...Bd6
      • 2.Qa2#
    • 1...Ba7
      • 2.Qd8#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qxc5#
      • 1...Kd6
        • 2.Qd8#
      • 1...e5!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Bd6
        • 2.Qb3#
      • 1...Bxd4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qd8#
      • 1...Bxd4
        • 2.Qxd4#
      • 1...e5
        • 2.Qxe5#
      • 1...Bd6
        • 2.Qh1#

This anticipates 39399(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINP(c),P-FLIGHT::QAR2(C)
    • B(a);SBLOCK::QAB(C)
    • B(a);N_GUARD::QAR(C)
  • Tries
    • Try
      • Q(C);N_PINP(c),P_PINB(a)
      • Threat
        • QAR1(C),XB(a)
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR2(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • QAR1(C)
      • Vars
        • P(d);::QAR1(C),XP(d)
        • B(a);SBLOCK::QAB(C)
      • Refutation
        • B(a);XP(B)
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR2(C)
      • B(a);OGATE,XP(B)::QAR1(C),XB(a)
      • P(d);::QAR1(C),XP(d)
      • B(a);SBLOCK::QAB(C)
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