MESON Chess Problem Database

Problem Display
PID: 148963 (3Q1K2/pn1b1Pp1/1n4N1/8/3kP3/2R5/1P2r3/1B6 w - - 0 1)

Guida, Marco

6th HM., The Problemist, 2012

3Q1K2/pn1b1Pp1/1n4N1/8/3kP3/2R5/1P2r3/1B6

#2

8 + 7

56 The Problemist 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qe5#
      • 1...Rxe4
        • 2.Qd2#
      • 1...Sc4
        • 2.Qd5#
      • 1...Bf5!
    • 1.Qxb6+?
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qb4#
        • 2.Qd6#
      • 1...axb6!
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Sc4
        • 2.Rd3#
      • 1...Be6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Rxe4
        • 2.Rd3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);N_PINB(f)
      • Threat
        • QAB1(G)
      • Vars
        • R(a);N_GUARD,XP(D)::QAR2(G)
        • S(c);N_GUARD::QAR1(G)
      • Refutation
        • B(f);
    • Try
      • Q(G);CHECK,N_PINB(f),XS(c)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);N_PINB(f)
      • Threat
        • QAB1(G)
      • Vars
        • R(a);OGATE,XP(D)::QAR1(G),XR(a)
        • S(c);SBLOCK::R1(C)
      • Refutation
        • B(f);
  • Actual
    • Q(G);N_PINB(f)
    • Threat
      • QAB1(G)
    • Vars
      • R(a);SBLOCK,XP(D)::R1(C)
      • S(c);N_GUARD::QAR1(G),XS(c)
      • S(e);N_GUARD::QAB1(G)
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