MESON Chess Problem Database

Problem Display
PID: 169200 (3qk1K1/2QN4/5PP1/4n3/8/8/8/8 w - - 0 1)

Abdullayev, Suleyman

3rd HM., SuperProblem (Blackjack 5), 2014

3qk1K1/2QN4/5PP1/4n3/8/8/8/8

#2

5 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Sxf6#
    • 1...Qc8
      • 2.Qxc8#
    • 1...Sf7
      • 2.gxf7#
  • Tries
    • 1.Qxe5+?
      • 1...Qe7
        • 2.Qxe7#
      • 1...Kxd7+!
  • Keys
    • 1.Qd6!
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qxd7
        • 2.Qf8#
      • 1...Sxg6
        • 2.f7#
      • 1...Sxd7
        • 2.f7#
      • 1...Qa5
        • 2.Qe7#
      • 1...Qb6
        • 2.Qe7#
      • 1...Qc7
        • 2.Qe7#
      • 1...Qe7
        • 2.Qxe7#
      • 1...Qa8
        • 2.Qe7#
      • 1...Qb8
        • 2.Qe7#
      • 1...Qc8
        • 2.Qe7#
      • 1...Sd3
        • 2.f7#
      • 1...Sf3
        • 2.f7#
      • 1...Sc4
        • 2.f7#
      • 1...Sg4
        • 2.f7#
      • 1...Sc6
        • 2.f7#
      • 1...Sf7
        • 2.gxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • Q(b);XP(A)::S(D),XQ(b)
    • Q(b);OGATEB::QAR2(C),XQ(b)
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • Q(C);CHECK,XS(a)
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR1(C),XQ(b)
      • Refutation
        • K(c);CHECK,S_FLIGHT,XS(D)
  • Actual
    • Q(C);
    • Vars
      • Q(b);XP(A)::S(D),XQ(b)
      • Q(b);SBLOCK,XS(D)::QAR1(C)
      • S(a);N_GUARD,XP(B)::P(A)
      • S(a);N_GUARD,XS(D)::P(A)
      • Q(b);N_GUARD::QAR1(C)
      • Q(b);N_GUARD::QAR1(C),XQ(b)
      • S(a);N_GUARD::P(A)
      • S(a);OGATE::P(B),XS(a)
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