MESON Chess Problem Database

Problem Display
PID: 149191 (K3B3/B7/8/p7/pPk5/7Q/1PN5/8 w - - 0 1)

Junio, Noel Ferrer

Best Problems, 2011

K3B3/B7/8/p7/pPk5/7Q/1PN5/8

#2

7 + 3

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3+?
      • 1...Kxb4
        • 2.Qc3#
      • 1...Kd5!
    • 1.Qf3?
      • 1...a3
        • 2.b3#
      • 1...axb4!
  • Keys
    • 1.Sd4!
      • 1...Kxb4
        • 2.Qc3#
      • 1...Kd5
        • 2.Qe6#
      • 1...axb4
        • 2.Bf7#
      • 1...a3
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(D)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);XP(D)
  • Actual
    • S(B);
    • Vars
      • K(b);P-FLIGHT,XP(D)::QAB1(C)
      • K(b);S_FLIGHT::QAB1(C)
      • P(c);SBLOCK,XP(D)::B(G)
      • P(a);N_GUARD::QAB1(C)
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