MESON Chess Problem Database

Problem Display
PID: 138777 (Q7/2B5/8/pk6/1P6/3K4/8/1R6 w - - 0 1)

Turevski, Dmitri Evgenevich

2nd Prize, StrateGems 01. Miniature Ty., 2010

Q7/2B5/8/pk6/1P6/3K4/8/1R6

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qxa5#
    • 1...a4
      • 2.Qb7#
  • Tries
    • 1.Kc3?
      • 1...Ka4
        • 2.Qxa5#
      • 1...a4
        • 2.Qb7#
      • 1...axb4+!
    • 1.Kd4?
      • 1...Ka4
        • 2.Qxa5#
      • 1...a4
        • 2.Qb7#
      • 1...axb4!
    • 1.Bd8?
      • 1...Ka4
        • 2.Qxa5#
      • 1...a4
        • 2.Qb7#
      • 1...axb4!
    • 1.Ra1?
      • threat
        • 2.Qb7#
      • 1...axb4
        • 2.Ra5#
        • 2.Qd5#
      • 1...Kxb4!
    • 1.Rb2?
      • 1...Ka4
        • 2.Qxa5#
      • 1...a4
        • 2.Qb7#
      • 1...axb4!
    • 1.Qd5+?
      • 1...Ka4
        • 2.Qxa5#
      • 1...Ka6!
    • 1.Qa6+?
      • 1...Ka4
        • 2.Qxa5#
      • 1...Kxa6!
  • Keys
    • 1.Bd6!
      • 1...Ka4
        • 2.Qxa5#
      • 1...Kb6
        • 2.bxa5#
      • 1...axb4
        • 2.Rxb4#
      • 1...a4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
    • P(a);SBLOCK::QAR2(E)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • P(a);CHECK,P_SPINP(a),XP(C)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • P(a);P_SPINP(a),XP(C)
    • Try
      • B(D);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • P(a);P_SPINP(a),XP(C)
    • Try
      • R(A);
      • Threat
        • QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • R(A);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • P(a);P_SPINP(a),XP(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • B(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
      • K(b);P-FLIGHT::R(A)+P(C)DCHECK,XP(a)
      • P(a);OGATE,P_SPINP(a),XP(C)::R1(A),XP(a)
      • P(a);SBLOCK::QAR2(E)
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