MESON Chess Problem Database

Problem Display
PID: 157985 (8/6K1/8/5Npk/3N3p/8/3Q4/8 w - - 0 1)

Abdullayev, Suleyman

Mikolaev-225 JT, 2014

8/6K1/8/5Npk/3N3p/8/3Q4/8

#2

4 + 3

15148 Sadier Collection 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.Qh6#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qxg5#
      • 1...g4
        • 2.Sg7#
        • 2.Qg5#
        • 2.Qh6#
      • 1...Kg4!
    • 1.Sf3?
      • threat
        • 2.Qxg5#
      • 1...g4
        • 2.Qg5#
        • 2.Qh6#
      • 1...Kg4!
    • 1.Se6?
      • threat
        • 2.Qxg5#
      • 1...g4
        • 2.Qg5#
        • 2.Qh6#
      • 1...Kg4!
    • 1.Se3?
      • 1...g4
        • 2.Qa5#
      • 1...h3!
    • 1.Sh6?
      • 1...g4
        • 2.Qa5#
      • 1...h3!
    • 1.Qc3?
      • 1...Kg4
        • 2.Qf3#
      • 1...h3
        • 2.Qxh3#
      • 1...g4!
    • 1.Qf4?
      • 1...h3
        • 2.Sg3#
      • 1...g4
        • 2.Qh6#
      • 1...gxf4!
    • 1.Qf2?
      • 1...Kg4
        • 2.Qf3#
      • 1...g4
        • 2.Qxh4#
      • 1...h3!
    • 1.Qg2?
      • 1...h3
        • 2.Qxh3#
      • 1...g4!
    • 1.Qh2?
      • 1...h3
        • 2.Qxh3#
      • 1...g4
        • 2.Qxh4#
      • 1...Kg4!
    • 1.Qd3?
      • 1...Kg4
        • 2.Qf3#
      • 1...h3
        • 2.Qxh3#
      • 1...g4!
  • Keys
    • 1.Qe3!
      • 1...Kg4
        • 2.Qf3#
      • 1...h3
        • 2.Qxh3#
      • 1...g4
        • 2.Qh6#

Anticipated by 76548(1936)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • P(b);OGATEB::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • P(b);OGATEB::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(a);N_GUARD::S(C)
        • P(b);OGATE,SBLOCK::QAR1(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • P(b);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(b);OGATE,SBLOCK::QAR1(A)
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