MESON Chess Problem Database

Problem Display
PID: 159559 (8/2R5/kp6/p7/1p6/QK6/8/8 w - - 0 1)

Kozhakina, Alena Vladimirova

Kudesnik, 2001

8/2R5/kp6/p7/1p6/QK6/8/8

#2

3 + 4

145 StrateGems 2012

SOLUTION

  • SOUND
  • Sets
    • 1...a4+
      • 2.Qxa4#
  • Tries
    • 1.Qc1?
      • 1...Kb5
        • 2.Qf1#
        • 2.Qc4#
      • 1...b5
        • 2.Qh6#
        • 2.Qc6#
      • 1...a4+!
    • 1.Qb2?
      • 1...Kb5
        • 2.Qe2#
      • 1...b5
        • 2.Qf6#
      • 1...a4+!
    • 1.Qxb4?
      • 1...a4+
        • 2.Qxa4#
      • 1...b5
        • 2.Qd6#
      • 1...axb4!
    • 1.Qa2?
      • 1...a4+
        • 2.Qxa4#
      • 1...Kb5
        • 2.Qe2#
      • 1...b5!
  • Keys
    • 1.Qa1!
      • 1...a4+
        • 2.Qxa4#
      • 1...Kb5
        • 2.Qf1#
      • 1...b5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);CHECK,OGATEB::QAR2(A),XP(b)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);N_PINP(b)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
        • P(d);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);N_PINP(b),XP(a)
      • Vars
        • P(b);CHECK,OGATEB::QAR2(A),XP(b)
        • P(d);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(b);CHECK,OGATEB::QAR2(A),XP(b)
        • K(c);N_SPINP(b),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Vars
      • P(b);CHECK,OGATEB::QAR2(A),XP(b)
      • K(c);N_SPINP(b),S_FLIGHT::QAB(A)
      • P(d);OGATEB,SBLOCK::QAR(A)
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