MESON Chess Problem Database

Problem Display
PID: 80033 (3QK3/6pk/7p/3B4/8/2B5/8/8 w - - 0 1)

Amirov, Talip Khasanovich

Vecherni Praha, 1961

3QK3/6pk/7p/3B4/8/2B5/8/8

#2

4 + 3

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g6
      • 2.Qc7#
      • 2.Qe7#
      • 2.Qd7#
  • Tries
    • 1.Be4+?
      • 1...Kg8
        • 2.Ke7#
      • 1...Kh8
        • 2.Kd7#
        • 2.Ke7#
        • 2.Kf7#
      • 1...g6!
    • 1.Qg5?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxh6#
        • 2.Qxg7#
      • 1...g6
        • 2.Qe7#
      • 1...hxg5!
    • 1.Qb6?
      • 1...Kh8
        • 2.Qxh6#
      • 1...g5
        • 2.Qb1#
      • 1...g6
        • 2.Qa7#
        • 2.Qc7#
        • 2.Qb7#
      • 1...h5!
    • 1.Qf6?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
        • 2.Qxh6#
      • 1...g5
        • 2.Qg7#
        • 2.Qf5#
        • 2.Qf7#
      • 1...g6
        • 2.Qe7#
        • 2.Qg7#
        • 2.Qh8#
        • 2.Qf7#
      • 1...gxf6!
    • 1.Qc7?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Kg6!
    • 1.Qe7?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Kg6!
    • 1.Qd7?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Kg6!
  • Keys
    • 1.Qh4!
      • 1...Kg6
        • 2.Be4#
      • 1...Kh8
        • 2.Qxh6#
      • 1...h5
        • 2.Qxh5#
      • 1...g5
        • 2.Qe4#
      • 1...g6
        • 2.Qe7#

This anticipates 11699(1971), 30238(1983), 167242(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(C)+K(D)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • P(b);OGATEB,SBLOCK::QAR(C)
      • Refutation
        • P(a);XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR2(C),XP(a)
        • P(b);N_GUARD::QAB(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Refutation
        • P(b);XQ(C)
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(C);P_PINP(a)
    • Vars
      • K(c);N_SPINP(a),S_FLIGHT::B(B)
      • K(c);P-FLIGHT::QAR2(C),XP(a)
      • P(a);OGATEB::QAR2(C),XP(a)
      • P(b);N_GUARD::QAB(C)
      • P(b);OGATEB,SBLOCK::QAR(C)
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