MESON Chess Problem Database

Problem Display
PID: 258699 (6bK/4Q2p/3RPn1p/1p5p/1p4p1/3pk1P1/1P1N3R/q7 w - - 0 1)

Bakcsi, Gyorgy

Buletin Problemistic, 1988

6bK/4Q2p/3RPn1p/1p5p/1p4p1/3pk1P1/1P1N3R/q7

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qa7#
    • 1...Qd1
      • 2.Qa7#
    • 1...Qe1
      • 2.Qa7#
    • 1...Qf1
      • 2.Qa7#
    • 1...Qg1
      • 2.Qa7#
    • 1...Qh1
      • 2.Qa7#
    • 1...Qa7
      • 2.Qxa7#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qf2#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qe1
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qf1
        • 2.Qd4#
        • 2.Qe5#
      • 1...Qg1
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qh1
        • 2.Qd4#
        • 2.Qf2#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qa7
        • 2.Qe5#
        • 2.Qf2#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qa8
        • 2.Qd4#
        • 2.Qf2#
        • 2.Qf4#
        • 2.Qxh6#
      • 1...Qxb2!
    • 1.Qf8?
      • threat
        • 2.Qxh6#
      • 1...Sd5
        • 2.Qf2#
      • 1...Se4
        • 2.Qf4#
      • 1...Qf1!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qxh6#
      • 1...Qf1
        • 2.Qa7#
      • 1...Se4
        • 2.Qd4#
      • 1...Sd5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::QAB(G)
    • Q(a);N_GUARD::QAB(G),XQ(a)
  • Tries
    • Try
      • Q(G);XS(h)
      • Threat
        • DUALS(5)
      • Refutation
        • Q(a);P_PINQ(G),XP(A)
    • Try
      • Q(G);
      • Threat
        • QAB(G),XP(i)
      • Vars
        • S(h);OGATE,P_PINP(A)::QAB1(G)
      • Refutation
        • Q(a);
  • Actual
    • Q(G);
    • Threat
      • QAB(G),XP(i)
    • Vars
      • Q(a);N_GUARD::QAB(G)
      • S(h);OGATE::QAB1(G)
      • S(h);OGATE::QAR2(G)
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