MESON Chess Problem Database

Problem Display
PID: 234148 (8/8/8/8/8/p1P5/2K3Q1/knN5 w - - 0 1)

Abdullayev, Suleyman

ChessStar, 2019

8/8/8/8/8/p1P5/2K3Q1/knN5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...a2
      • 2.Sb3#
  • Tries
    • 1.Qf3?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...a2
        • 2.Sb3#
      • 1...Sd2!
    • 1.Qh3?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...a2
        • 2.Sb3#
      • 1...Sd2!
    • 1.Qd5?
      • threat
        • 2.Qa2#
      • 1...a2
        • 2.Sb3#
        • 2.Qxa2#
      • 1...Sxc3!
    • 1.Qc6?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...a2
        • 2.Sb3#
      • 1...Sd2!
    • 1.Qa8?
      • 1...Sd2
        • 2.Qxa3#
      • 1...a2
        • 2.Sb3#
        • 2.Qxa2#
      • 1...Sxc3!
    • 1.Qd2?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...a2
        • 2.Sb3#
      • 1...Sxd2!
    • 1.Qg3?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...a2
        • 2.Sb3#
      • 1...Sd2!
    • 1.Qg8?
      • threat
        • 2.Qa2#
      • 1...a2
        • 2.Sb3#
        • 2.Qxa2#
      • 1...Sxc3!
    • 1.c4?
      • 1...Sd2
        • 2.Qg7#
      • 1...a2
        • 2.Sb3#
      • 1...Sc3!
  • Keys
    • 1.Qg7!
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.c4#
      • 1...a2
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::S(A)
  • Tries
    • Try
      • Q(C);
      • Vars
        • S(b);OGATE,XP(D)::QAB(C),XS(b)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Vars
        • S(b);OGATE,XP(D)::QAB(C),XS(b)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • S(b);XP(D)
    • Try
      • Q(C);
      • Vars
        • S(b);OGATE,XP(D)::QAB(C),XS(b)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);P_PINP(c)
      • Vars
        • S(b);N_GUARD::QAR2(C),XP(c)
      • Refutation
        • S(b);XP(D)
    • Try
      • Q(C);
      • Vars
        • S(b);OGATE,XP(D)::QAB(C),XS(b)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);
      • Vars
        • S(b);OGATE,XP(D)::QAB(C),XS(b)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • S(b);XP(D)
    • Try
      • P(D);
      • Vars
        • S(b);N_GUARD::QAB(C)
        • P(c);SBLOCK::S(A)
      • Refutation
        • S(b);
  • Actual
    • Q(C);
    • Vars
      • S(b);OGATE,P_SPINS(b),XP(D)::QAB(C),XS(b)
      • S(b);N_GUARD::QAB(C)+P(D)
      • P(c);SBLOCK::S(A)
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