MESON Chess Problem Database

Problem Display
PID: 28753 (8/4N3/2K5/8/pkN5/1P6/8/Q7 w - - 0 1)

Zimmer, Eligiusz

4th Sp. Comm., StrateGems, 2001

8/4N3/2K5/8/pkN5/1P6/8/Q7

#2

5 + 2

145 StrateGems 2003

SOLUTION

  • SOUND
  • Tries
    • 1.Kd5?
      • 1...Kxb3
        • 2.Qb2#
      • 1...Kb5
        • 2.Qxa4#
      • 1...axb3
        • 2.Qa5#
      • 1...a3!
    • 1.Sd2?
      • 1...Ka5
        • 2.Qxa4#
      • 1...axb3
        • 2.Sd5#
      • 1...a3!
    • 1.Qd1?
      • threat
        • 2.Sd5#
      • 1...Kc3
        • 2.Sd5#
      • 1...axb3!
  • Keys
    • 1.Sa5!
      • 1...Kxa5
        • 2.Qxa4#
      • 1...axb3
        • 2.Sd5#
      • 1...a3
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
        • K(b);P-FLIGHT::QAB1(A),XP(a)
        • P(a);OGATE,SBLOCK,XP(B)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
        • P(a);XP(B)::S(E)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • S(E)
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • P(a);XP(B)
  • Actual
    • S(C);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XS(C)::QAR1(A),XP(a)
      • P(a);XP(B)::S(E)
      • P(a);SBLOCK::QAB(A)
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