MESON Chess Problem Database

Problem Display
PID: 212644 (8/5Bkp/8/7Q/8/p7/8/2B4K w - - 0 1)

Mitroshin, Anatoly Anatolyovich

Land og Folk, 1977

8/5Bkp/8/7Q/8/p7/8/2B4K

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh8
      • 2.Qe5#
  • Tries
    • 1.Bh6+?
      • 1...Kh8
        • 2.Qe5#
      • 1...Kf6!
    • 1.Bb3?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qe5#
      • 1...h6
        • 2.Qxh6#
      • 1...a2!
    • 1.Bc4?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qe5#
      • 1...h6
        • 2.Qxh6#
      • 1...a2!
    • 1.Bd5?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qe5#
      • 1...h6
        • 2.Qxh6#
      • 1...a2!
    • 1.Qg6+?
      • 1...Kf8
        • 2.Bxa3#
      • 1...Kh8
        • 2.Qf6#
        • 2.Qg8#
      • 1...hxg6!
    • 1.Qh6+?
      • 1...Kh8
        • 2.Qf8#
        • 2.Qf6#
      • 1...Kxf7!
  • Keys
    • 1.Ba2!
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qe5#
      • 1...h6
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A),XP(a)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XB(D)
  • Actual
    • B(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
      • P(c);::QAB1(C),XP(c)
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