MESON Chess Problem Database

Problem Display
PID: 201793 (1N6/p1K5/8/pk6/8/2Q5/8/1N6 w - - 0 1)

Abdullayev, Suleyman

ChessStar, 2018

1N6/p1K5/8/pk6/8/2Q5/8/1N6

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qc4#
    • 1...a4
      • 2.Sa3#
  • Tries
    • 1.Kb7?
      • 1...Ka4
        • 2.Qc4#
      • 1...a4
        • 2.Sa3#
      • 1...a6!
    • 1.Sd2?
      • threat
        • 2.Qc4#
      • 1...Ka4
        • 2.Qb3#
      • 1...a4!
    • 1.Sa6?
      • threat
        • 2.Qc6#
      • 1...Ka4
        • 2.Qc4#
      • 1...Kxa6
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qc6#
      • 1...a4!
    • 1.Sd7?
      • 1...Ka4
        • 2.Qc4#
      • 1...Ka6
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qc6#
      • 1...a6
        • 2.Qb3#
      • 1...a4!
    • 1.Qd3+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kc5
        • 2.Sa6#
      • 1...Kb4!
    • 1.Qc5+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kxc5!
  • Keys
    • 1.Kd6!
      • threat
        • 2.Qb3#
      • 1...Ka4
        • 2.Qc4#
      • 1...Kb6
        • 2.Qb2#
        • 2.Qb3#
        • 2.Qc6#
      • 1...a4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
    • P(a);SBLOCK::S(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • P(a);SBLOCK::S(A)
      • Refutation
        • P(c);
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • K(b);P-FLIGHT::S(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR2(B)
    • Vars
      • K(b);S_FLIGHT::QAR2(B)
      • P(a);SBLOCK::QAR1(B)
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