MESON Chess Problem Database

Problem Display
PID: 104797 (K7/3p4/2Pp4/3kp3/8/7B/8/2Q3B1 w - - 0 1)

St Maurice, Ephrem

La Presse, 1895

K7/3p4/2Pp4/3kp3/8/7B/8/2Q3B1

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • 1...Kxc6
        • 2.Qb7#
      • 1...dxc6
        • 2.Qd3#
      • 1...e4
        • 2.Qb5#
      • 1...Kc4!
    • 1.Qc2?
      • 1...dxc6
        • 2.Qd3#
      • 1...e4!
  • Keys
    • 1.Qf1!
      • 1...Ke4
        • 2.Bg2#
      • 1...Kxc6
        • 2.Qc4#
      • 1...dxc6
        • 2.Qd3#
      • 1...e4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(A)
        • P(d);SBLOCK,XP(D)::QAR2(A)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(d);SBLOCK,XP(D)::QAR2(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);S_FLIGHT,XP(D)::QAR2(A)
      • P(d);SBLOCK,XP(D)::QAR2(A)
      • P(b);SBLOCK::QAR2(A)
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